www.nimco-controls.com Directional Control Valve CV550 Smart Solutions... for the Future
Contents Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 16 Page 17 Page 18 Page 19 General valve description General Technical Data Performance IM - Inlet Module IM1, 2 & 3 Mid Inlet Modules SM - Section Module SPO - Section Module with PO Ceck Valves OM - Outlet Module Spools Spool Controls Secondary Port Valves Accessory Valves Dimensional Drawing Ordering Code 3
General valve description The CV550 is a stackable parallel circuit valve available from 1-10 section per valve unit and can be configured for both fixed and variable pumps. It is designed to handle an input flow of up to 90 l/min [24 USgpm] and a working pressure of up to 350 bar [5000 psi] The CV550 has a modular design with a range of different inlet-, section- and outlet modules which allows for a high level of customization of the valve unit. The compact size and the possibility for a large number of integrated features makes it ideal for a wide range of applications such as; truck mounted cranes, excavators, drilling rigs, tipper trucks etc. The CV550 is manufactured using the highest quality alloy cast iron which in combination with NIMCO s advanced machining and control methods assures the precise accuracy of every component. Each valve is tested and the results documented prior to despatch. Minimized spool leakage Hard chromium plated spools, low friction and a specially developed honing method gives absolute minimum spool leakage of the valve. Excellent load control CV550 can be fitted with the standard load control spools or with specially designed spools for specific flows, each of which is designed to provide optimum control characteristics within its flow range. On request, special spools can be designed for special functions. Full utilisation of the spool stroke The optimized metering grooves integrated in each spool and the precise machining of every component allows the entire stroke of the spool to be used. This allows full control of the load whether the operator is using very little or full flow capacity. In addition the movement of any spool in any direction will give the same speed of machine function, enhancing security and reliability. Multifunctional control Several spools can be operated at the same time even with very large differences in load pressures, due to the utilisation of the differential pressure built up inside the valve during operation. Uniform and low lever forces By combining the unique design features of the valve body and the spools, an excellent balance of the dynamic forces is achieved throughout the entire pressure and flow range. This keeps spring forces at a minimum and makes the valve very easy to operate by hand lever as well as any of NIMCO s remote controls. Wide range of accessories The CV 550 offers a wide range of possibilities by using existing and future accessory valves. Also a wide range of spool and remote controls such as single or joystick wire controls, pneumatic and hydraulic proportional or on/off controls are available. 5
General Technical Data Pressure Ratings Maximum Inlet Pressure Maximum work Port Pressure Maximum Return Line Pressure 350 bar 350 bar 25 bar 5000 psi 5000 psi 363 psi Flow Rates Maximum inlet flow Maximum output flow A/B 90 l/min 125 l/min 24 USgpm 33 USgpm Temperature Range Oil Temperature Ambient Temperature -30 to +90ºC -30 to +60ºC -22 to +194ºF -22 to +140ºF Spool Leakage Maximum at 100 bar (1450 psi) 32 mm2/s (cst) 3 cm 3 /min 0.18 in 3 /min Filtration Contamination Level equal to or better than 18/14 according to ISO 4406 Oil Viscosity Recommended Operating Range 12-380 mm 2 /s 65-2128 SSU Maximum number of Work Sections Standard Inlets 10 6 www.nimco-controls.com
Performance 7
IM - Inlet Module POS. DESCRIPTION Code 1 Inlet Body IM 2 Main Relief Valve RV 3 Circuit Options - TECHNICAL DATA Maximum Inlet flow 90 l/min 24 USGpm Maximum Working Pressure 350 bar 5000 psi Port Size P1 BSP G1/2 SAE #10 M22x1,5 Port Size T1 BSP G1/2 SAE #10 M22x1,5 Module Weight 2,6 kg 5,7 lbs MODULE DESCRIPTION Inlet module for valves with manual controls such as hand levers or wire controls with the possibility to equip with an unloading valve and a main relief valve. SAMPLE SCHEMATICS 8 www.nimco-controls.com
IM1, 2 & 3 - Mid Inlet Modules POS. DESCRIPTION Code 1 Inlet Body IE 2 Main Relief Valve RV IM1 IM2 IM3 TECHNICAL DATA Maximum Inlet Flow 80 l/min 21 USGpm Maximum Working Pressure 350 bar 5000 psi Port Size P1 BSP G3/4 SAE #12 M27x2 Module Weight 3,5 kg 7,7 lbs MODULE DESCRIPTION The CV550 can be equipped with a range of different mid inlet modules to feed the valve with more than one pump. There are three different modules for different circuit options. All mid inlet modules have the same width as a standard section, which means that the same tierods can be used to assemble the valve. IM1 Parallel Circuit Mid inlet section designed so that the pump inlets are parallel connected. Can be equipped with a relief valve to handle the flow from the second pump. The Relief valve should be set at the same pressure as the relief valve in the side inlet module. IM2 Dual Circuit Mid inlet section which is designed so that it divides the valve into separate circuits with a common tank return. This inlet can be equipped with a relief valve for the second pump. This means that the circuits can operate with different flows and system pressures. IM3 Tandem Circuit Mid inlet section which is designed so that there is a tandem coupling between the two circuits. The first part of the valve is supplied only by the first pump. The second part (after the IM3) is supplied by both pumps SAMPLE SCHEMATICS 9
SM - Section Module POS. DESCRIPTION Code 1 Section Body SM 2 Load Holding Check Valve - 3 Spool Control A-side Page 14 4 Spool Control B-side Page 14 5 Secondary Valve A-side Page 16 6 Secondary Valve B-side Page 16 7 Main Spool Page 13 TECHNICAL DATA Maximum Port Flow 90 l/min 24 USGpm Maximum Working Pressure 350 bar 5000 psi Port Size A/B alt 2 BSP G1/2 SAE #10 M22x1,5 Module Weight 3,0 kg 6,6 lbs MODULE DESCRIPTION Manual Section Module which can be used together with any of the inlet modules. The SM-section can be equipped with secondary valves on the A- and B-port such as shock relief and/or anticavitation valves (5) & (6). It has a load holding check valve for each port (2) and can be equipped with manual hand lever operation or wire control. A wide range of spool positioning controls are also available with spring centring or detents in various positions of the spool stroke. 10 www.nimco-controls.com
SPO Section Module with PO Check Valves POS. DESCRIPTION Code 1 Section Body SPO 2 Load Holding Check Valve - 3 Spool Control A-side Page 14 4 Spool Control B-side Page 14 5 Pilot Operated Check Valve A-Side - 6 Pilot Operated Check Valve B-Side - 7 Main Spool Page 13 TECHNICAL DATA Maximum Port Flow 90 l/min 24 USGpm Maximum Working Pressure 350 bar 5000 psi Port Size A/B alt 2 BSP G1/2 SAE #10 M22x1,5 Module Weight 3,6 kg 7,9 lbs MODULE DESCRIPTION Manual Section Module which can be used together with any of the inlet modules. It has built in pilot operated check valves (5) & (6) for applications where a zero leakage is required when the spool is in neutral position. It has a load holding check valve for each port (2) and can be equipped with manual hand lever operation or wire control. A wide range of spool positioning controls are also available with spring centring or detents in various positions of the spool stroke. 11
OM -Outlet Module POS. DESCRIPTION Code 1 Outlet Body OM 2 Plug - 3 Plug - TECHNICAL DATA Maximum Outlet Flow 90 l/min 24 USGpm Maximum Working Pressure 350 bar 5000 psi Port Size T2 BSP G1/2 SAE #10 M22x1,5 Port Size T3 BSP G1/2 SAE #10 M22x1,5 Module Weight 4.2 kg 9,3 lbs MODULE DESCRIPTION Outlet Module which can be equipped with High-Pressure-Carry-Over by plugging (2) and (3) with special cavity blanking plugs. 12 www.nimco-controls.com
Spools All of NIMCO s spools are designed for specific flow rates in order to achieve optimal load control characteristics and to fully utilise the entire stroke of the spool. By optimizing the balance between spools and valve housing, spring forces are minimized and exact manoeuvring is achieved. Besides the standard spools listed there are also special spools available. For further information concerning these types please contact your NIMCO representative. Standard Spools Spool Type Symbol Spool Code Double Acting 3S Single Acting A-port 2SA Single Acting B-port 2SB Double Acting with 4th pos Float 4S Motor 4S 13
Spool Controls Type A-Side B-Side Type 9 Spring Centred Open Spool End OE 9S Spring Centred with Through Spool 10 Detent in pos 1, 2, 3 10S Detent in pos 1, 2, 3 with Through Spool Hand Lever Linkage Vertical S1 11 Spring Centred Detent in pos 4 13 Spring Centred Detent in pos 2 Hand Lever, Linkage Horizontal S2 14 Spring Centred Detent in pos 3 14 www.nimco-controls.com
Spool Controls Code Type A-Side B-Side Type Code 16 Detent in pos 1, 2, 3 & 4 Enclosed Hand Lever S5 17 Detent in pos 2 & 3 P Pneumatic ON/OFF Hand Lever Linkage Vertical Opposite Spool Movement S7 PP Pneumatic Proportional EP Electro Pneumatic ON/OFF Mechanical Joystick for Dual Spool Control S6 HP Hydraulic Proportional Hydraulic Proportional HP 15
Secondary Port Valves C Shock Relief Valve Differential operated shock relief valve for preventing pressure peaks. Fixed pressure setting from 35 to 320 bar [500-4650 psi]. CA Shock Relief and Anti Cavitation Valve Differential operated shock relief valve for preventing pressure peaks in combination with a check valve to prevent negative pressure in the work ports. Fixed pressure setting from 35 to 320 bar [500-4650 psi]. Anti-cavitation valve Check valve for preventing negative pressure in the work ports. P Cavity Blanking Plug The plug is used when a work port accessory valve cavity should be blanked off. 16 www.nimco-controls.com
Accessory Valves UCV08 - Unload Control Valve The UCV08 valve is used in the IM inlet module as an emergency stop feature. It can also be used to unload the standby pressure for energy saving and lower heat generation when no hydraulic functions are used. Hydraulic Data Maximum Operating Pressure 345 bar [5000 psi] Rated Flow 40 l/min Internal Leakage Max. 0.15 ccm/min at 345 bar [5000 psi] Contamination Level 20/18/15 acc. ISO 4406 Temperature Range -40 to +120ºC Electrical Data Power 345 bar [5000psi] Voltage 12 V 24 V Current 1.22 A 0.61 A Resistance 9.8 Ω ±5% 39.3 Ω ±5% Connector Type DIN 43650 Protection Class IP65 Electrical data Ordering Code UCV- 12- NC- X 12 V 12 24 V 24 Normally Open NO Normally Closed NC Manual Override M None X PERFORMANCE PRESSURE DROP bar/psi 8.6/125 6.9/100 5.2/75 3.4/50 1.7/25 to de-energized to energized - - - - 32 cst/150 sus oil at 40 C 7.5 15.1 2 4 22.7 6 FLOW lpm/gpm 30.2 8 37.9 10 17
Dimensional Drawing 18 www.nimco-controls.com
Ordering Code Enter option codes in the empty fields for desired inlet module, leave the rest blank Inlet Module IM IE IF Electrical Unloading Valve (UCV) * 12 VDC 12 * 24 VDC 24 ** Unloading when no signal to UCV NO ** Unloading when no signal to UCV + Man. Override NO-M ** Unloading when signal to UCV NC ** Unloading when signal to UCV + Man. Override NC-M ** None P Main Relief Valve * Main Relief Valve RV * Plug P ** Pressure Setting bar [psi] Threads BSP Metric SAE G M S * * * * * * Section No. 1 2 3 4 5 6 7 8 9 10 Section Module * Manual Section SM * Section with Pilot Operated Check Valves SPO * Mid Inlet Module IM1 - Parallel Circuit IM1 * Mid Inlet Module IM2 - Dual Circuit IM2 * Mid Inlet Module IM3 -Tandem Circuit IM3 ** Pressure Relief Valve for Mid Inlet Module RV+pressure setting bar [psi] **Plug P Spool Code See page 13 Spool Control A-Side Spring Centered 9 Detent in pos 1, 2 & 3 10 Spring Centered Detent in pos 4 11 Spring Centered Pressure Point in pos 5 18 El. Hyd. Proportional Hyd. Proportional Spool Control B-Side Manual hand lever Wire Control El. Hyd. Proportional w/ manual hand lever El. Hyd. Proportional Hyd. Proportional w/ manual hand lever Hyd. Proportional Secondary Valves A-side Shock/Anticav-valve Shock valve Antacav. Valve None Secondary Valves B-side Shock/Anticav-Valve Shock valve Antacav. Valve None Threads BSP Metric SAE EHP HP S5 W EHL EHO HPL HPO CA+pressure setting in bar [psi] C+pressure setting in bar [psi] A P CA+pressure setting in bar [psi] C+pressure setting in bar [psi] A P G M S ** ** ** ** ** ** Enter option codes in the empty fields for each individual section of the valve up to the desired number of sections, leave the rest blank If a mid inlet should be used, fill the code for the desired mid inlet module and the relief valve on the position it should be located and leave the other fields in that column blank * * * * * * * * * * ** ** ** ** ** ** ** ** ** ** Outlet Module High-Pressure-Carry-Over High-Pressure-Carry-Over None Threads BSP Metric SAE HPCO P G M S OM 19
Notes 20 www.nimco-controls.com
Notes 21
Notes 22 www.nimco-controls.com
www.nimco-controls.com Directional Control Valve CV550 Smart Solutions... for the Future Nimco AB Agnesfridsvägen 186 SE-20039 Malmö Sweden Rev.0-240512