Directional control valves catalogue NVD2 - NVS3

Transcription

1 Directional control valves catalogue NVD - NVS Edition /

2 roducts for mobile hydraulic applications Mechanical and Electric Cartridge Valves ressure control valves p max bar Counter balance valves Q max L/min Directional control valves orts up to SE 6 Flow control valves. M7x, arts-in-ody Valves Counter balance valves p max bar O check valves Q max L/min oom lowering control valves orts up to / SE6 ressure control valves Hydraulic Integrated Circuits Weight lifting p max bar Earth moving Q max L/min gricultural vehicles Industrial vehicles Directional Control Valves Flow sensing p max bar Load sensing Q max L/min orts S /8 NEM S.r.l. Via F. Turati, / Quattro Castella (RE), Loc. Roncolo Italy hone: +9 () 87 Fax: +9 () info@nem-hydraulics.com ll rights reserved - subject to revision

3 Table of contents Company profile NVD flow sensing directional control valve NVS-IS, NVS-IC on/off SE directional valves NVS-LS SE load sensing directional valve. / 6

4 Company profile NEM, founded in 99, is a valve manufacturer specialising in the development of hydraulic solutions for mobile, agricultural and industrial applications. Our goal is to be a reliable partner, providing for our customers a state of the art service, delivered by highly qualified technical staff, to achieve customized solutions. t NEM we are aware that the future of the hydraulic industry is in system engineering. We are therefore developing and manufacturing top quality products, which can be fully integrated into many different applications. NEM components ensure the highest level of performance and safety in any application; this, together with our focus on innovation, has gained us the trust and appreciation of leading machine manufacturers worldwide. NEM firmly believes that its internal synergy ensures that all customers receive the most efficient and effective service. This is why, each and every day, we explore advances in industry related knowledge, discuss solutions, and bring into play all our expertise to ensure we are utilizing the most advanced technologies. In order to provide our customers with the highest possible quality, NEM employs some of the most skilled professionals within the industry, who work state of the art equipment and processes. This garantuees perfect functionality of components and systems produced at our facilities. NEM s philosophy has always been quality driven, with the customer first in mind. t NEM we understand that human capital is the most important resource and main reason for our joint success. Our company believes in people, in their talents and their personal expertise. We source raw material and parts, develop and design components and systems, machine them using processes such as turning, grinding, lapping, drilling, honing, heat treatment, assemble and test and finally deliver to our customer s specifications. It s our responsibility to take care of our customers as well as ensure total quality. NEM s capabilities cover a wide spectrum of control technologies by combining mechanics, electrics and electronics to supply perfect hydraulic operating components and systems. Hundreds of customers in many industries trust us and have taken advantage of our expertise. Our applications can be found all over the globe, under the heaviest working conditions. It goes without saying that in NEM people go the extra mile in order to satisfy our customers and the customer of our customers. You are kindly invited to meet the people at NEM who listen and who deliver for the benefit of our customers. Mechanical and Electrical Cartridge Valves ressure control valves p max bar Counterbalance valves Q max L/min Directional control valves Cavity up to SE 6 Flow control valves M7x, arts-in-ody Valves Counterbalance valves p max bar O check valves Q max L/min oom lowering control valves orts up to / SE6 ressure control valves Flow control valves Hydraulic Integrated Circuits Weight lifting p max bar Earth moving Q max L/min gricultural vehicles Industrial vehicles Directional Control Valves Flow sensing (patented) p max bar Load sensing Q max L/min orts S /8. / 6. / 6

5 Directional Control Valves Directional Control Valves NVD Flow sensing valves orts / S /8 p max bar Inlet Q max L/min Features Flow Sensing (patented) Load independent flow control Good stability combined with counterbalance valves Electro-proportional hydraulic actuation Open centre (closed centre available on request) Module design NVD/, example of customized configuration Function NVD is a highly innovative Directional Control Valve, which paves the way into the world of proportional valves. NVD technology (patented) impressively links constructive simplicity and high functional performance; a simple and compact design, typical of the more traditional open-centre directional valves. It is associated with an extremely precise control, independent from the loading conditions and simultaneous movements. The flow sensing principle is efficient when electrically operated. It reaches its maximum potential when used in combination with radio remote control or electronic control devices. the metered oil flow and the electro-proportional actuation forces, so this direct feedback makes the flow control independent from loads and simultaneous movements. Directional control valve NVD is availiable in its standard version for fixed displacement pumps, on request it can be also configured for variable displacement pumps. With fixed displacement pumps, the open centre internal achitecture allows a very low system pressurization at the stand-by condition. The flow sensing principle is based on the equilibrium between Spool Electro-proportional hydraulic control oppet control flow ntishock valve lug for antishock valve replacement. / 6. / 6

6 Directional Control Valves NVD Directional Control Valves NVD Hydraulic circuit Model code Configuration example NVD/ Inlet section IL-VM(8)-V-VR Work section # D-W-/-XE-MD-H- F-C(8)/TC 9 T The ordering configuration is generated by assembling a string of codes that allow to define the valve assembly. This string is made by defining the inlet section first, then the working sections and at the end the outlet section and fixing features. See below an example of NVD model code and in the following pages the options for each block of strings. Work section # D-W-/-XE-MD-H- F-C(8)/TC Outlet section ZN-EV-CD ort location and size U-G Fixing SS The hydraulic layout of NVD flow sensing control valves is similar to any open-center directional control valve. C The technological feature that makes the NVD operational concept similar to a load sensing directional control valve is the fact that, being electrically operated, it controls the flow independently from loading conditions and the simultaneous movements. Manual actuator device is provided as emergency features in case of malfunction of the electro-hydraulic proportional control device: in case of malfunction, the NVD directional control valve acts as a normal open-center one. L * Ordering example NVD with working section NVD/ age Inlet section IL-VM(8)-V-VR 8 Spool activated by proportional electro-hydraulic control Electro-hydraulic proportional control oppet control flow on section ntishock valve lug for antishock valve replacement 6 re-loading valve 7 ressure reducing valve 8 General relief valve 9 Electric dump valve T Work section #* D-W-/-XE-MD-H-F-C(8)/TC C Outlet section ZN-EV-CD ort location and size (inlet/outlet sections) U-G 6 Fixing SS 6 * The work section string configuration must be repeated as many times as the number of sections composing the control valve.. 6 / 6. 7 / 6

7 Directional Control Valves NVD Directional Control Valves NVD - Inlet Section Inlet Section, cont NVD inlet module has a power supply connection and a T connection so that the connection to the tank can be easily chosen either at the DCV inlet or outlet. The module is equipped with a general relief valve and it integrates the pressure reducing valve (8 bar) for power supply to the proportional electro-hydraulic controls. The pressure-reducing valve is equipped with a µm filter for the protection of proportio- nal electro-valves. t user s choice, the input module can host a pre-loading valve. This device is used to keep the standby pressure at a suitable level in order to have a quick reaction by the proportional electro-hydraulic controls. Inlet module Left side IL IR Right side L port (drain line connected to tank G /) V port (reduced pressure G /8) Main relief valve VM SVM L V L V Inlet module Main relief valve reloading valve ressure reducing valve T T with pressure relief valve lug for valve replacement. without pressure relief valve VM VM VM age IL - VM() - V - VR Setting range [bar] ressure increase [bar/turn] Inlet module Left side IL Right side IR 9 reloading valve V T Main relief valve ) Without pressure relief valve (plug) SVM With direct acting relief valve - setting range bar VM(...) ) With direct acting relief valve - setting range bar VM(...) ) With direct acting relief valve - setting range bar VM(...) ) 9 L V L V reloading valve Wtih preloading valve (Recommended for inlet flow less than L/min) V Without preloading valve T 9 ressure reducing valve With pressure reducing valve (standard option) VR - ) Tamper proof cap to be ordered separately; ordering no: 99 ) (...) Setting pressure to be specified Q max T Inlet module with preloading valve Recommended for inlet flow less than l/min T Inlet module without preloading valve. 8 / 6. 9 / 6

8 Directional Control Valves NVD Directional Control Valves NVD - Work Section NVD work section consists of a spool and related flow control poppets, electro hydraulic proportional valves, lever kit and port relief valves. The electro proportional piloting valves are placed in the lower part of the section and the flow poppet control can be reached by disassembling them. In order to guarantee best functionality, the parts must be duly chosen according to the system features. The spool must be proportional to the pump capacity, while the flow poppet must be proportional to the desired flow capacity on and ports, which may be different along the same section (i.e. / ). Work Section, cont age D- W - / - XE- MD- H- F- C(8)- TC Spool capacity ) L/min - L/min - L/min C- L/min D Flow poppet control on port on port Capacity of flow poppet control L/min 6 L/min L/min 9 9 L/min 8 L/min 8 8 L/min L/min 6 L/min 6 6 L/min - 6 Electro-hydraulic proportional control valve roportional valve on ports and XE lug on ports and XT roportional valve on port, plug on port X lug on port, proportional valve on port X age D- W - / - XE- MD- H- F- C(8)- TC Housing Without port relief valves D With port relief valves D - Spool T T T T T T T T T T T T W W WJ WK WY W roportional coils V, connector DIN 6 MD V, connector DIN 6 MD V, connector DEUTSCH DT MS V, connector DEUTSCH DT MS V, connector M-JUNIOR M V, connector M-JUNIOR M 6 Lever Spool without lever H Spool with high threaded M6 lever, removable ) H Spool with high fixed lever H Spool with low fixed lever H 7 Spool centering positions, spring centering kit F positions, spring centering kit with rod for double control F positions, spring centering kit with on/off position sensors ) F 8 ort relief valves ) (for housing D only) ort lug, without anti-shock valve TC ressure setting to bar, setting at (... ) bar C(...) ressure setting to bar, setting at (... ) bar C(...) ressure setting to bar, setting at (... ) bar C(...) ort lug, without anti-shock valve TC ressure setting to bar, setting at (... ) bar C(...) ressure setting to bar, setting at (... ) bar C(...) ressure setting to bar, setting at (... ) bar C(...) - T T W ) Spool capacity has to be same as the pump capacity +/- L/min; i.e. pump L/min, spool L/min. ) Handle lever to be ordered separatly, ordering no.: 96 ) Sphere-shaped position sensor, normally closed with ackard Metri-pack wires and male connector ) Tamper proof caps to be ordered separately, ordering no.: 9. / 6. / 6

9 Directional Control Valves NVD Directional Control Valves NVD Electro-hydraulic proportional control valve Lever & Spool centering Electro-hydraulic proportional control valve roportional coils 7 Electro-proportional valves of NVD must be driven by WM signal. y adjusting the maximum current value, it is possibile to set the maximum flow supplied from each port. In order to reduce control hysteresis as much as possible and guarantee the most reactive operation, it is recommended to set the WM carrier frequency at 6 Hz and anyhow not exceed 9 Hz. port port 6 6 Lever H Control without lever Electro-hydraulic proportional flow regulator and coils characteristics H Control with high M6 thread Hand lever has to be ordered separately (cod.96) Max flow rate L/min Max. system working pressure bar ilot pressure line bar 8 H Control with high fixed lever H Control with low fixed lever Max. back pressure on port L (connect to tank) bar Coil power at C W 6 mbient temperature C - to Thermal insulation class Coil F Wire insulation class Wire H (> 8 C) ED % DIN 6 I6 Connector type & protection class ) DEUTSCH I67 M JUNIOR I67 Voltage supply VDC Resistance Ω,9, Max. current supply at duty-cycle %,8,9 Hysteresis (current) % Recommended WM frequency Hz 6-9 ) For different type of connectors contact NEM customer care. 7 Spool centering F F F positions, spring centering kit * Sensor features: sphere-shaped position sensor, usually closed with ackard Metri-pack wires and male connector. positions, spring centering kit with rod for double control positions, spring centering kit with on/off position sensors* Current range, Voltage range VDC Temperature range C - Connector ackard Metri-pack NC contact. / 6. / 6

10 Directional Control Valves NVD Directional Control Valves NVD C - Outlet Section Dump valve and Coil The NVD outlet section allow to manage a second return port and the possibility to install an electric dump valve that ensures, in the absence of power supply, the entire distributor can not be operated. esides, the outlet section can be configured for carry-over connection feature, that allows to install NVD in serial with other hydraulic devices. Dump valve Coil M Outlet module with plug (without dump valve) ET T M (main pressure gauge G /) Outlet module with dump valve M EV EV EV T Inlet M (manometer G /) No emergency ush button ush and twist button Outlet module ZN Dump valve lug (without dump valve) Dump valve without emergency operation Dump valve with emergency push button Dump valve wtith emergency push and twist button ZN- EV- CD Coil (dump valve) V, connector DIN 6 CD V, connector DIN 6 CD V, connector DEUTSCH DT, with diode CS V, connector DEUTSCH DT, with diode CS V, connector M-JUNIOR C V, connector M-JUNIOR C ET EV EV EV Electric dump valve characteristics Max flow rate L/min 6 Max. working pressure bar Total leakage cm /min, Seals NR and TFE Cavity C Cartridge tightening torque Nm Ring nut tightening torque Nm Coil power at C W mbient temperature C - to Thermal insulation class Coil H Wire insulation class Wire H (> 8 C) ED % DIN 6 I6 ) Connector type & protection class ) DEUTSCH I67 ) M JUNIOR I67 ) Voltage supply VDC Resistance Ω 6,8 ) For different type of connectors contact NEM customer care. ) Degree of protection with connector assembled.. / 6. / 6

11 Directional Control Valves NVD Directional Control Valves NVD ort location and Threading, mounting type and T ports location Delivery on, discharge on T Delivery on, discharge on T Delivery on, discharge on T, carry-over on Delivery on, discharge on T, carry-over on U- G- SS U U U U ort threading, S ISO 8 G Mounting type Without brackets SS With brackets CS Technical data General Work sections 8 max. Mounting type With fixing holes, Type SS With mounting brackets, type CS Mounting position ny Spool stroke mm, +, Spool operating force dan 8 to 8 Lever adjustment ±9 Dead band mm + mbient temperature C - to 8 Seals NR or TFE Hydraulic orts location L U U U U T Delivery on () Discharge on (T) T L Delivery on () Discharge on (T) L T Delivery on () Discharge on (T) Carry-over on () T L Delivery on () Discharge on (T) Carry-over on () Hydraulic fluid Mineral oil HL to DIN Fluid temperature range C - to 9 Viscosity range mm /s to 6 Contamination level NS 68 class 9 (/8/ ISO 6:999) Filtration degree ) µm Filtration level ) β 7 Max. flow rate ports, L/min Max. flow rate ports, L/min Internal leakage / to T cm /min Max. operating pressure bar Max. back pressure bar orts threading ) For a proper NVD operation it is reccomended to install a filter on the feeding line () with at least µm and β 7 filtration degree. Threads ISO 8 (S) ump User Carry over Reservoir Reservoir Drain G ORTS T T L Size ½ ⅜ ⅜ ½ ½ ¾ ¼ Mounting type SS CS Without brackets With brackets. 6 / 6. 7 / 6

12 Directional Control Valves NVD Directional Control Valves NVD erformance characteristics Note: Technical data and diagrams are measured with mineral oil HL to DIN of 6 cst and at O C oil temperature. erformance characteristics, cont Note: Technical data and diagrams are measured with mineral oil HL to DIN of 6 cst and at O C oil temperature. Work section oppet flow control characteristics ressure drop in bar Flow in L/min NVD/8 NVD/ Flow in L/min 8 9 L/min 6 L/min L/min Main relief valve ressure drop in bar VM VM VM Flow in L/min Flow in L/min,8,,,,6,8,,,6,7,8,9 Current in L/min ( Vdc) ( Vdc) 8 L/min L/min Dump valve ort relief valve ressure drop in bar Flow in L/min Flow in L/min,8,,,,6,8,,,6,7,8,9 Current in ( Vdc) ( Vdc) L/min 6 L/min L/min ressure drop in bar C C C,8,,,,6,8 ( Vdc),,,6,7,8,9 ( Vdc) Current in Flow in L/min. 8 / 6. 9 / 6

13 Directional Control Valves NVD Directional Control Valves NVD Dimensions in mm Dimensions cont,,7 8 8 Mounting NVD/ NVD/ NVD/ NVD/ NVD/ NVD/6 NVD/7 NVD/8 with brackets without brackets X Y X, 9,, 7,,, 9,, Y 78, 8, 8, 98, 8, 78, 8, 8, T Weight kg,,7 7,,7, 7,7,,7 8 T X X' T Y Y' 7 7 9, N Holes M8 prof. N Slots Ø ort "L". / 6. / 6

14 Directional Control Valves NVD Directional Control Valves NVD Spare parts Spare parts cont Type Type CS 989 ort relief valve C 989 9NVD C 989 lug for carry-over 9 6 Connection caps ll closed SE / plug ilot valve 9NVD7 9NVD T T 77 7 ilot valve replcaement plug Dump valve 9NVD9 9NVD Type Type Type Inlet module IL IR 9NEM 9NEM Main relief valve SVM 9776 VM VM VM recharge valve S V N7 N7 ressure reducing valve VR Work section D D 6 Shutters N7 9NEM 9NEM, 77 6, , 9 79, 7, 7, 7 6, 6 7, 7 7 roportional electro-hydraulic control valve XT 97 XE NV 8 Coil for proportional electrohydraulic valve MD 99 MD 99 MS 99 MS 99 M 99 M 99 9 Lever H 9 H 987 H 96 hand lever H 98 H Spool centering F 9 F 99 F 9 F 9 ort relief valve TC 9796 C C C Outlet module ZN Dump valve 8 9NEM6 ET 9776 EV EV EV Coil for dump valve CD 989 CD 989 CS L 7 7 Tie rod kit for mounting without brackets spool 9968 spools spools 9968 spools spools spools spools spools Tie rod kit for mounting with brackets spool 9968 spools spools 9968 spools spools spools spools spools Seal kits Input section Intermediate section 9NVD 9NVD General pressure relief valve 9NVD Reducing valve, precharge valve 9NVD Spool Symbol Type (L/min) T T T T T T Ordering code W 6 W 67 WC 66 WF 6 W 6 W 6 WC 6 WF 6 WJ 6 WJ 969 WJC 68 WJF 6 8, / 6. / 6

15 Directional Control Valves Directional Control Valves NVS-IS, NVS-IC On/off directional control valves ort size S ⅜ p max bar Q max L/min Features Inlet flow max. L/min SE / on-off directional valves Electro proportional inlet flow control (NVS-IC) nodized aluminum ort relief valves Emergency manual levers Levers sensor switches NVS/, Example of customized configuration Function NVS is a range of compact electric directional control valves (DCV) designed for mobile applications where weight and dimensions are key factors. Its architecture is based on the combination of SE DCV cartridges screwed into modular aluminum manifolds. Thanks to his modular design it is possible to assemble up to 8 sections of way, position on-off solenoid valves arranged in parallel and feed by on-off or electro-proportional inlet elements. The inlet elements can be configured with many options as: different type of pressure relief valves, dump valves, load independent proportional flow control, carryover by-pass line. On request, it can be easily customized to integrate specific features.. / 6. / 6

16 Directional Control Valves NVS-IS, NVS-IC Directional Control Valves NVS-IS, NVS-IC NVS-IS Hydraulic circuit On/off inlet section type configuration NVS-IC Hydraulic circuit roportional inlet section type configuration Configuration example NVS/6 7 bar Configuration example NVS/ bar bar Inlet section IS-N-DD-6(8) Work section # WS-D-C Work section # WSU-D-CD-/N-/N Work section # WS--CD Work section # WS--CD Work section # WSU-U-CD-/N-/N-DD Work section #6 WSU-U-CD-/C(7)-/N Inlet section IC-N-DD-6(8)-8-8-D Work section # WS-U-CD Work section # WS-U-CD Work section # WS-U-CD Work section # WSU-U-CD-/N-DD-/N-DD Work section # WSU-U-CD-/C()-/C() 8 bar 8 bar M T M T. 6 / 6. 7 / 6

17 Directional Control Valves NVS-IS, NVS-IC Directional Control Valves NVS-IS, NVS-IC Ordering example for complete valve inlet section, cont Valve with work sections NVS/ 6 7 IC- N- DD- 6(8) D Inlet section IS-N-DD-6(8) Work section # WS-U-CD Work section # The ordering configuration is generated by assembling a string of codes that allow to define the valve assembly. This string is made by defining the inlet section first, then the working sections. See above an example and in the following pages the options for each block of strings. - inlet section Configuration on/off, Type IS WSU-U-CD-/C(7)-/C(7) M Configuration On/off roportional Dump valve lug (w/o dump valve) Dump valve Dump valve with push emergency feature Dump valve with push and twist emergency feature IS IC N N N N Coil (dump valve) V, connector DIN 6 DD V, connector DIN 6 DD V, connector DEUTSCH DT, with diode DS V, connector DEUTSCH DT, with diode DS V, connector M-JUNIOR D V, connector M-JUNIOR D ressure relief valve (spring type and setting) lug (w/o pressure relief valve) N Direct acting, Q max L/min ressure setting range to 6 bar, setting at (...) (...) ressure setting range to bar, setting at (...) (...) ressure setting range to bar, setting at (...) ) (...) Direct acting, Q max L/min ressure setting range to bar, setting at (...) (...) ressure setting range to bar, setting at (...) (...) ressure setting range to bar, setting at (...) 6(...) ressure setting range to bar, setting at (...) ) 7(...) Hydraulic compensator ) Cracking pressure 8 bar 8 Configuration proportional, Type IC M T Electro-proportional flow regulator ) Max. regulated flow rate 9 L/min, with lever Max. regulated flow rate L/min, with lever Max. regulated flow rate L/min, with lever 8 Max. regulated flow rate L/min, with lever Max. regulated flow rate 9 L/min, with lever and detent 6 Max. regulated flow rate L/min, with lever and detent 6 Max. regulated flow rate L/min, with lever and detent 86 Max. regulated flow rate L/min, with lever and detent 6 Max. regulated flow rate 9 L/min, with handknob 7 Max. regulated flow rate L/min, with handknob 7 Max. regulated flow rate L/min, with handknob 87 Max. regulated flow rate L/min, with handknob 7 6 T 7 Coil for electro-proportional flow regulator ) No coil V, connector DIN 6 D V, connector DIN 6 D V, connector DEUTSCH DT S V, connector DEUTSCH DT S V, connector M-JUNIOR V, connector M-JUNIOR ) For NVS: Maximum pressure setting bar 7 ) For configuration IC only. 8 / 6. 9 / 6

18 Directional Control Valves NVS-IS, NVS-IC Directional Control Valves NVS-IS, NVS-IC - work section work section, cont Work section on/off, Type WS 6 / / 7 8 WSU- U- CD- / C(8)- / N- DD Housing Without anti-shock valve and dump valve repared for antishock valve and/or dump valve WS WSU Spool N Work section on/off with port relief valves and/or dump valves, Type WSU UX - side UX - side UX - side UX - side Emergency operation Without emergency operation Lever up U Lever down D Coils (cartridge valve) No coil (when Spool N ) V, connector DIN 6 CD V, connector DIN 6 CD 6 V, connector DIN 6 C6D V Rac ), connector DIN 6 CD V, connector DEUTSCH DT, with diode CS V, connector DEUTSCH DT, with diode CS V, connector M-JUNIOR, with diode C V, connector M-JUNIOR, with diode C orts Side / Side / 6 ort relief valves lug, without anti-shock valve N N Direct operated, setting range to 6 bar, setting at... bar C(...) C(...) Direct operated, setting range to bar, setting at... bar C(...) C(...) Direct operated, setting range to bar, setting at... bar C(...) C(...) 7 Dump valves lug, without dump valve Without emergency operation N N ush emergency operation N N ush and twist emergency operation N N 8 Coils (dump valve) V, connector DIN 6 DD DD V, connector DIN 6 DD DD V, connector DEUTSCH DT, with diode DS DS V, connector DEUTSCH DT, with diode DS DS V, connector M-JUNIOR, with diode D D V, connector M-JUNIOR, with diode D D ) Rectifer not included; power W. / 6. / 6

19 Directional Control Valves NVS-IS, NVS-IC Directional Control Valves NVS-IS, NVS-IC Technical data General Work sections 8 max. Mounting type Mounting brackets and fixing holes Mounting position ny mbient temperature C - to Seals NR or TFE Hydraulic Hydraulic fluid Mineral oil HL to DIN Fluid temperature range C - to 9 Viscosity range mm /s to Contamination level NS 68 class 9 (/8/ ISO 6:999) Filtration degree µm Filtration level β 7 Max. flow rate L/min Max. back pressure bar Dump valve (Coil) DD DD DS DS D D Coil tube diameter mm Wire insulation class H (> 8 C) ED % Coil power at C W, mbient temperature C - to Connector type DIN 6 DEUTSCH DT M-JUNIOR Voltage supply VDC Resistance Ω Thermal insulation class Coil H Wire H rotection class I6 I67 I6 Circuit Standard With diode Standard ressure relief valve Type Direct acting Max. flow rate L/min Max. working pressure bar ressure setting range type bar to 6 type bar to type bar to type bar to type bar to type 6 bar to type 7 bar to Technical data, cont Electro-roportional flow regulator Max flow rate L/min Max. working pressure bar pplication limit Δp max from port to port bar Total leakage cm /min WM Hz 6-9 Hysteris (current) % Coil tube diameter mm 9 Wire insulation class H (> 8 C) ED % Coil power at C W 6 mbient temperature C - to Connector type DIN 6 Voltage supply VDC Resistance Ω,9, Thermal insulation class Coil F Wire H rotection class I6 Circuit Standard On/off cartridge valve (working section) CD CD C6D CD CS CS C C Max. flow rate L/min Max. working pressure bar pplication limit Δp max from port to port bar Total leakage cm /min Coil tube diameter mm 9 Wire insulation class H (> 8 C) ED % Coil power at C W mbient temperature C - to Connector type DIN 6 DEUTSCH DT M-JUNIOR Voltage supply VDC 6 Rac ** Resistance Ω 6,8 7, 7 6,8 6,8 Thermal insulation class Coil F Wire H rotection class I 6 I 67 I 6 Circuit Standard With diode. / 6. / 6

20 Directional Control Valves NVS-IS, NVS-IC erformance characteristics: Inlet section erformance characteristics: Work section Note: Technical data and diagrams are measured with mineral oil HL to DIN of 6 cst and at OC oil temperature. Note: Technical data and diagrams are measured with mineral oil HL to DIN of 6 cst and at OC oil temperature. Dump valve 6 Spool ressure drop [bar] ressure Drop [bar] Flow [L/min] ressure relief valve Flow [L/min] Spool ressure Drop [bar] ressure Drop [bar] ressure Drop [bar] Flow [L/min] Flow [L/min] Hydraulic compensator Flow [L/min] ressure [bar], Options,,6,7 (Qmax L/min) Options,, (Qmax L/min) Directional Control Valves NVS-IS, NVS-IC Dump valve (ports /) 7, 6 ressure drop [bar], Flow [L/min] Flow [L/min] ort relief valve (ports /) Electro-proportional flow regulator L/min L/min Options C,C,C L/min 9 L/min ressure Drop [bar] Flow [L/min],,,,,,6,,,8, Current [],6,,7,,8,6,9 ( VDC),8 ( VDC) 7 bar pressure drop. / 6. Flow [L/min] / 6

21 Directional Control Valves NVS-IS, NVS-IC Directional Control Valves NVS-IS, NVS-IC Inlet section (Dimensions in mm) Work section (Dimensions in mm) IS,, 8 7 8, Fixing holes M8 deep N Ø9mm fixing holes 7, 9 8, IC 8, 97 8,,, Total Working Sections, Total NVS Fixing holes M8 deep ORT SIZE G /8 G /8 Single Working Section WEIGHT [kg] WS WSU,, 6 Total working sections [mm] NVS/ NVS/ NVS/ NVS/ NVS/ NVS/6 NVS/7 NVS/ , , Total NVS [mm] Inlet Section Type NVS/ NVS/ NVS/ NVS/ NVS/ NVS/6 NVS/7 NVS/8 IS, 6,,, 8, 6, 67, 8, IC, 8,, 6,, 6, 87, 8, ORT SIZE T M G /8 G /8 G / WEIGHT [kg] IS IC,7,8. 6 / 6. 7 / 6

22 Directional Control Valves NVS-IS, NVS-IC Directional Control Valves NVS-IS, NVS-IC Spare parts - Inlet Section Spare parts - Inlet Section, cont Not available Not available ressure relief valve,8 Hex. Hex. Hex. Hex ,7 Hex. /"-6 UNF,,7 Hex. / -6 UNF Note This type of valve is characterized by a dumped plunger that enable stable relief characteristics. Dump valve Setting range [bar] 6 ressure increase [bar/turn] 6 6 Std. l/min [bar] Hydraulic compensator Setting range [bar] ressure increase [bar/turn] 8 9 Std. l/min [bar] Hex.7 No emergency ush utton ush and Twist 7, 6 Ø9 7/8 - UNF- Dump valve coil 7,7 DEUTSCH DT M - JUNIOR ELECTRIC CIRCUITS Ø7, Cracking pressure [bar] 8 Standard, 7,7 6 Electro-proportional flow regulator Ø8 7,, STNDRD WITH DIODE (I-DIRECTIONL) 6,, Connector rotection class Coil thermal insulation class Voltage [V] Resistance [Ω] Circuit DIN 6 I6 ) H 7 STNDRD 9 8, DIN 6 I6 ) H 8 STNDRD 9 DEUTSCH DT I67 H 7 WITH DIODE 9 Hex.7 7/8- UNF- DEUTSCH DT I67 H 8 WITH DIODE 9 M - JUNIOR I6 ) H 7 STNDRD 9 M - JUNIOR I6 ) H 8 STNDRD 9 ) rotection with connector assembled 6 Ø 7, 8 Max. flow rate [L/min] 9 No emergency ush utton. 8 / 6. 9 / 6

23 Directional Control Valves NVS-IS, NVS-IC Directional Control Valves NVS-IS, NVS-IC Spare parts - Inlet Section, cont Spare parts - Working Section, cont 7 Coil for electro-proportional flow regulator Emergency operation: lever Connector rotection class Coil thermal insulation class Voltage [V] Resistance [Ω] Circuit DIN 6 I6 ) H,9 STNDRD 99 DIN 6 I6 ) H, STNDRD 99 DEUTSCH DT I67 H,9 STNDRD 99 DEUTSCH DT I67 H, STNDRD 99 M - JUNIOR I6 ) H,9 STNDRD 99 M - JUNIOR I6 ) H, STNDRD 99 ) rotection with connector assembled Spare parts - Working Section U DOWN Lever orientation U DOWN UX - side UX - side Coil (cartridge valve) M - JUNIOR DEUTSCH DT 8 ELECTRIC CIRCUITS 6 9 Spool (cartridge valve) S S S S STNDRD WITH DIODE (I-DIRECTIONL) Spool type Spool type, 9 8, 66 S 6 Connector rotection class Coil thermal insulation class Voltage [V] Resistance [Ω] Circuit DIN 6 I6 ) H 6,8 STNDRD 989 S Spool type DIN 6 I6 ) H STNDRD 989 DIN 6 I6 ) H 6 7, STNDRD 989 Hex.7 7/8- UNF- DIN 6 I6 ) H V Rac ) 7 STNDRD 9869 DEUTSCH DT I67 F 6,8 WITH DIODE Ø,8 Ø 9 Ø 7, No emergency Safety lever predisposition N Lever and coil to be ordered separately DEUTSCH DT I67 F 8 WITH DIODE 989 M - JUNIOR I6 ) F 6,8 WITH DIODE 989 M - JUNIOR I6 ) F 8 WITH DIODE 989 ) rotection with connector assembled ) Rectifier not included - ower W. / 6. / 6

24 Directional Control Valves NVS-IS, NVS-IC Spare parts - Working Section, cont 6 ort relief valve 6,8,7 Hex. Hex. Hex. /"-6 UNF Setting range [bar] 6 ressure increase [bar/turn] 6 6 Std. l/min [bar] Directional Control Valves NVS-LS Load sensing directional control valves ort size S ⅜ p max bar Q max L/min Features Inlet flow max. L/min Load sensing SE / electro proportional directional valves Inlet flow compensation Modular design nodized aluminum ort relief valves Emergency manual levers Levers sensor switches 7 Dump valve NVS/, Esample of customized configuration Function 8 Dump valve coil 7,7 DEUTSCH DT No emergency M - JUNIOR ush utton ush and Twist ELECTRIC CIRCUITS NVS-LS is a compact load sensing, electro-proportional actuated, directional control valve (DCV); designed to control a maximum inlet flow of L/min. Its architecture is based on the combination of SE DCV cartridges screwed into aluminum bodies. Thanks to his modular design it is possible to assemble up to 8 sections of way, position proportional solenoid valves arranged in parallel. The inlet elements can be configured with many options as: different type of pressure relief valves, dump valves, carryover by-pass line. On request, it can be easily customized to integrate specific features. NVS is designed for basic applications where the flow control isn t required under simultaneous movement. Typical applications for NVS are self-propelled access platforms or small cranes., 7,7 7,, STNDRD WITH DIODE (I-DIRECTIONL) 6,, Connector rotection class Coil thermal insulation class Voltage [V] Resistance [Ω] Circuit DIN 6 I6 ) H 7 STNDRD 9 DIN 6 I6 ) H 8 STNDRD 9 DEUTSCH DT I67 H 7 WITH DIODE 9 DEUTSCH DT I67 H 8 WITH DIODE 9 M - JUNIOR I6 ) H 7 STNDRD 9 M - JUNIOR I6 ) H 8 STNDRD 9 ) rotection with connector assembled. / 6. / 6

25 Directional Control Valves NVS-LS Directional Control Valves NVS-LS NVS-LS Hydraulic circuit Ordering example for complete valve Load sensing inlet section configuration Valve with work sections NVS/ Configuration example NVS/ Inlet section LS-N-DD-(8)- Work section # WSLS--S Work section # WSULS--SD-/N-/C(8) Work section # WSLS-U-CSD-/N-/N-DD Work section # WSULS-U-SD-/C()-/N bar Inlet section LS-N-DD-(8)-8 Work section # WSLS-U-SD Work section # WSULS-U-SD-/C(7)-/C(7) inlet section Configuration load sensing, Type LS M T - inlet section, cont 8 bar LS- N- DD- (8)- 8- Notes: To be noticed that the load sensing internal line is direct connected to work sections / ports. The control spools are open center types in order to prevent the pump pressurization due by load induced pressures with SE- way/pos cartridges not actuated. s consequence of the above feature the carrying cylinders must be provided of load holding valves (Counterbalance or ilot Operated Check valves, see NEM valve catalogues vol. and ). Configuration Load sensing Dump valve lug (w/o dump valve) Dump valve Dump valve w/ push emergency feature Dump valve w/ push and twist emergency feature LS N N N N Coil (dump valve) V, connector DIN 6 DD V, connector DIN 6 DD V, connector DEUTSCH DT, with diode DS V, connector DEUTSCH DT, with diode DS V, connector M-JUNIOR D V, connector M-JUNIOR D The ordering configuration is generated by assembling a string of codes that allow to define the valve assembly. This string is made by defining the inlet section first, then the single working sections. See in the next page an example and in the following pages the options for each block of strings. M 8 bar T ressure relief valve (spring type and setting) lug (w/o pressure relief valve) N Direct acting, Q max L/min ressure setting range to 6 bar, setting at (...) (...) ressure setting range to bar, setting at (...) (...) ressure setting range to bar, setting at (...) ) (...) Direct acting, Q max L/min ressure setting range to bar, setting at (...) (...) ressure setting range to bar, setting at (...) (...) ressure setting range to bar, setting at (...) 6(...) ressure setting range to bar, setting at (...) ) 7(...) Hydraulic compensator Cracking pressure 8 bar 8 Cracking pressure bar ) ) For NVS: Maximum pressure setting bar ) For max. regulated flow rate L/min only. / 6. / 6

26 Directional Control Valves NVS-LS Directional Control Valves NVS-LS - work section work section, cont Work section on/off 6 / / 7 8 WSULS- U- CD- / C(8)- / N- DD Housing Without port relief valve and dump valve repared for antishock valve and/or dump valve WSLS WSULS Spool and flow rate L/min 9 L/min L/min L/min 8 N Work section on/off with port relief valve and/or dump valve Emergency override features Without emergency lever Lever up U Lever down D UX - side UX - side UX - side UX - side Coils (cartridge valve) No coil (when Spool and flow rate N ) V, connector DIN 6 SD V, connector DIN 6 SD V, connector DEUTSCH DT, with diode SS V, connector DEUTSCH DT, with diode SS V, connector M-JUNIOR, with diode S V, connector M-JUNIOR, with diode S orts Side / Side / 6 ort relief valves lug, without port relief valve N N ressure setting range to 6 bar, setting at (...) C(...) C(...) ressure setting range to bar, setting at (...) C(...) C(...) ressure setting range to bar, setting at (...) C(...) C(...) 7 Dump valves lug, without dump valve Without emergency operation N N ush emergency operation N N ush and twist emergency operation N N 8 Coils (dump valve) V, connector DIN 6 DD DD V, connector DIN 6 DD DD V, connector DEUTSCH DT, with diode DS DS V, connector DEUTSCH DT, with diode DS DS V, connector M-JUNIOR, with diode D D V, connector M-JUNIOR, with diode D D. 6 / 6. 7 / 6

27 Directional Control Valves NVS-LS Directional Control Valves NVS-LS Technical data General Work sections 8 max. Mounting type Mounting brackets and fixing holes Mounting position ny mbient temperature C - to Seals NR or TFE Hydraulic Hydraulic fluid Mineral oil HL to DIN Fluid temperature range C - to 9 Viscosity range mm/s to Contamination level NS 68 class 9 (/8/ ISO 6:999) Filtration degree µm Filtration level β 7 Max. flow rate L/min Max. back pressure bar Dump valve (Coil) DD DD DS DS D D Coil tube diameter mm Wire insulation class H (> 8 C) ED % Coil power at C W, mbient temperature C - to Connector type DIN 6 DEUTSCH DT M-JUNIOR Voltage supply VDC Resistance Ω Thermal insulation class Coil H Wire H rotection class I6 I67 I6 Circuit Standard With diode Standard Technical data, cont roportional cartridge valve (work section) SD SD SS SS S S Max. inlet flow rate L/min Max. working pressure bar pplication limit Δp max from port to port bar Total leakage cm /min Coil tube diameter mm 9 Wire insulation class H (> 8 C) ED % Coil power at C W 6 mbient temperature C - to Connector type DIN 6 DEUTSCH DT M-JUNIOR Voltage supply VDC Resistance Ω,9,,9,,9, Max. current,9,8,9,8,9,8 Thermal insulation class Coil F Wire H rotection class I 6 I 67 I 6 Circuit Standard With diode ressure relief valve Type Direct acting Max. flow rate L/min Max. working pressure bar ressure setting range type bar to 6 type bar to type bar to type bar to type bar to type 6 bar to type 7 bar to. 8 / 6. 9 / 6

28 Directional Control Valves NVS-LS Directional Control Valves NVS-LS erformance characteristics: Inlet section Note: Technical data and diagrams are measured with mineral oil HL to DIN of 6 cst and at O C oil temperature. erformance characteristics: Work section Note: Technical data and diagrams are measured with mineral oil HL to DIN of 6 cst and at O C oil temperature. Dump valve 6 Spool ressure drop [bar] Flow [L/min] L/min L/min 9 L/min Flow [L/min],,,,,,6,7,8,9 ( VDC),,,6,8,,,,6,8 ( VDC) Current [] 7 bar pressure drop ressure relief valve Options,, (Q max L/min) Options,,6,7 (Q max L/min) Dump valve (ports /) ressure Drop [bar] Flow [L/min] ressure Drop [bar] Flow [L/min] ressure drop [bar] 6 Flow [L/min] Hydraulic compensator, ressure [bar] 7,, Flow [l/min] ort relief valve (ports /) Options C,C,C ressure Drop [bar] Flow [L/min]. / 6. / 6

29 Directional Control Valves NVS-LS Directional Control Valves NVS-LS Inlet section (Dimensions in mm) Work section (Dimensions in mm) LS,, , 6 Fixing holes M8 deep 6 8 N Ø9mm fixing holes , 8 9 8, 97 8,,, Total Working Sections, Total NVS ORT SIZE T M WEIGHT [kg] G /8 G /8 G /,7 ORT SIZE G /8 G /8 Single Working Section WEIGHT [kg] WSLS WSULS,, Total working sections [mm] NVS/ NVS/ NVS/ NVS/ NVS/ NVS/6 NVS/7 NVS/ Total NVS [mm] Inlet Section Type NVS/ NVS/ NVS/ NVS/ NVS/ NVS/6 NVS/7 NVS/8 LS, 6,,, 8, 6, 67, 8,. / 6. / 6

30 Directional Control Valves NVS-LS Directional Control Valves NVS-LS Spare parts - Inlet Section Spare parts - Inlet Section, cont ressure relief valve,8 Hex. Hex. Hex. Hex.9 6 Hex. /"-6 UNF, Hex. / -6 UNF,7,7 Note This type of valve is characterized by a dumped plunger that enable stable relief characteristics. Dump valve Setting range [bar] 6 Setting range [bar] ressure increase [bar/turn] 6 6 ressure increase [bar/turn] 8 9 Std. l/min [bar] Std. l/min [bar] Hydraulic compensator Dump valve coil No emergency ush utton ush and Twist 7, 6 Ø9 Hex.7 7/8 - UNF- 7,7, DEUTSCH DT 7,7 M - JUNIOR ELECTRIC CIRCUITS Ø7, Cracking pressure [bar] 8 7,, STNDRD WITH DIODE (I-DIRECTIONL) 6,, Connector rotection class Coil thermal insulation class Voltage [V] Resistance [Ω] Circuit DIN 6 I6 ) H 7 STNDRD 9 DIN 6 I6 ) H 8 STNDRD 9 DEUTSCH DT I67 H 7 WITH DIODE 9 DEUTSCH DT I67 H 8 WITH DIODE 9 M - JUNIOR I6 ) H 7 STNDRD 9 M - JUNIOR I6 ) H 8 STNDRD 9 ) rotection with connector assembled. / 6. / 6

31 Directional Control Valves NVS-LS Directional Control Valves NVS-LS Spare parts - Working Section Spare parts - Working Section, cont Emergency operation: lever UX - side UX - side U Lever orientation U DOWN DOWN Spool S S Coil (cartridge valve) S 7 M - JUNIOR DEUTSCH DT S 8 Max. flow rate [L/min] ELECTRIC CIRCUITS Hex.7 6 7/8- UNF- Ø 9 Ø 7,, 9 8, 66 STNDRD WITH DIODE (I-DIRECTIONL) Ø,8 No emergency Safety lever predisposition N Lever and coil to be ordered separately Connector rotection class Coil thermal insulation class Voltage [V] Resistance [Ω] Circuit DIN 6 I6 ) H,9 STNDRD 989 DIN 6 I6 ) H, STNDRD 989 DEUTSCH DT I67 F,9 WITH DIODE 989 DEUTSCH DT I67 F, WITH DIODE 989 M - JUNIOR I6 ) F,9 WITH DIODE 989 M - JUNIOR I6 ) F, WITH DIODE 989 ) rotection with connector assembled. 6 / 6. 7 / 6

32 Directional Control Valves NVS-LS Spare parts - Working Section, cont Notes 6 ort relief valve,8 Hex. Hex. 6 Hex. /"-6 UNF Setting range [bar] 6 ressure increase [bar/turn] 6 6 Std. l/min [bar],7 7 Dump valve No emergency ush utton ush and Twist 8 Dump valve coil 7,7 DEUTSCH DT M - JUNIOR ELECTRIC CIRCUITS, 7,7 7,, STNDRD WITH DIODE (I-DIRECTIONL) 6,, Connector rotection class Coil thermal insulation class Voltage [V] Resistance [Ω] Circuit DIN 6 I6 ) H 7 STNDRD 9 DIN 6 I6 ) H 8 STNDRD 9 DEUTSCH DT I67 H 7 WITH DIODE 9 DEUTSCH DT I67 H 8 WITH DIODE 9 M - JUNIOR I6 ) H 7 STNDRD 9 M - JUNIOR I6 ) H 8 STNDRD 9 ) rotection with connector assembled. 8 / 6. 9 / 6

33 Directional Control Valves Notes. 6 / 6