VPP2-04. Functional Description HA /2003. Directly operated pressure relief valves. Replaces HA /2002

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1 Directly operated pressure relief valves VPP-04 HA 5093 /003 Size 04, 06 p max up to 30 bar Q max up to 40 L/min Replaces HA /00 Screw-in cartridge, modular and in-line design Six pressure ranges Pressure adjustment option: - screw with internal hexagon Functional Description Pressure relief valves VPP-04 were designed for applications requiring a safely valve or a pressure regulating valve working over a wide range of pressures and flow rates. The valve basically consists of the valve body (), poppet with damping spool () and compression spring (3). The spring pushes the poppet onto the seat (5) holding the valve in its normally closed position. When the force, caused by the pressure acting on the exposed surface area of the poppet, exceeds the spring force, the valve opens and and the flow passes from port P to port T. To optimize the valve performance, six pressure ranges are available. Choosing the closest range is recommended. The design enables the valve to be used as a screw-in cartridge for manifold mounting, or in a subplate and/or in-line mounted housing. The valve body and the adjustment screw are zinc coated. With models M and R the valve bodies are phosphate coated.

2 HA 5093 Ordering Code VPP-04/ - Directly operated pressure relief valve Model screw in cartridge modular valve, connection A-T modular valve, connection B-T modular valve, connection P-T modular valve, connection A-BandB-A modular valve, connection A-TandB-T modular valve, connection A-T modular valve, connection B-T modular valve, connection P-T modular valve, connection A-BandB-A modular valve, connection A-TandB-T in-line valve, thread G3/8 - P, P, T in-line valve, thread G/ - P, P, T in-line valve, thread G3/8 - P, T in-line valve, thread G/ - P, T S MA04 MB04 MP04 MC04 MD04 MA06 MB06 MP06 MC06 MD06 RA RA RB RB without designation V Seals NBR Viton Pressure range up to 5 bar 6 up to 63 bar 0 up to 00 bar 6 up to 60 bar 5 up to 50 bar 3 up to 30 bar Functional Symbols FOR PREFERRED TYPES SEE BOLD TYPING IN ORDERING CODE AND TABLE OF PREFERRED TYPES ON PAGE Model MA Model MB Model MP Model MC Model MD Valve side Subplate side Model RA Model RB Ordering Numbers of Sandwich / Valve Bodies (without screw-in cartridge) Valve body for modular valve - NBR Ordering number Valve body for modular valve - Viton Ordering number MA04-VP MA04-VP/V MB04-VP MB04-VP/V MP04-VP MP04-VP/V MC04-VP MC04-VP/V MD04-VP MD04-VP/V Valve body for modular valve - NBR Ordering number Valve body for modular valve - Viton Ordering number MA06-VP MA06-VP/V MB06-VP MB06-VP/V MP06-VP MP06-VP/V MC06-VP MC06-VP/V MD06-VP MD06-VP/V

3 HA 5093 Ordering Numbers of Sandwich / Valve Bodies (without screw-in cartridge) Valve body for in-line valve - NBR Ordering number Valve body for in-line valve - Viton Ordering number RA-06-VP RA-06-VP/V RA-06-VP RA-06-VP/V RB-06-VP RB-06-VP/V RB-06-VP RB-06-VP/V Technical Data for Model S Nominal size mm 04 Max. flow rate L/min 40 Max. input pressure (ports P, A, B) bar Max. output pressure (port T) bar 30 Working pressure related to flow bar see p-q characteristics Hydraulic fluid Fluid temperature range for standard sealing (NBR) Fluid temperature range for Viton sealing (FPM) Hydraulic oils of power classes HM, HV to CETOP - RP 9H in viscosity classes ISO VG 3, 46 and 68. C C Viscosity range mm /s Max. degree of fluid contamination Class /8/5 according to ISO 4406 (999). Weight kg 0.7 Mounting position Weight - models MA04, MB04, MP04 - models MC04, MD04 - models MA06, MB06, MP06 - models MC06, MD06 - models RA, RA, RB, RB kg optional p-q Characteristics for Model S Measured at n= 35mm /s and t = 40 C Pressure range 30 Pressure p in bar Pressure range 50 Pressure range 60 Pressure range 00 Pressure range 63 Pressure range 5 Min. pressure setting Limit of valve use (Dp =0%) Flow Q in L/min 3

4 HA 5093 p-q Characteristics, min. pressure setting Measured at n =35mm /s and t = 40 C Dp, p Emin in bar Dp, p Emin in bar Flow Q in L/min - MA04, MB04, MP04, MD04 - MC04 Flow Q in L/min - MA06, MB06, MP06, MD06 - MC06 Valve Dimensions Model S Dimensions in millimetres Type designation Mounting cavity Adjustment element (screw with internal hexagon 6 mm) - clockwise rotation - pressure increase - anticlockwise rotation - pressure decrease Locknut hex. 4 mm 3 Wrench flats s = 7 mm-tightening torque 30 Nm 4 O-ring 9.4 x.(pc.), supplied with valve 5 Combined sealing: O-ring 4 x.78 ( pc.) Back-up ring BBP80B05-N9 = 4.73 x 7.43 x.4 ( pc.) supplied with valve 4

5 Valve Dimensions Dimensions in millimetres HA 5093 Size 04 (Installation dimensions to ISO 440, CETOP - RP H) Model MA 4 3 Name plate Adjustment element for pressure setting 3 4 through mounting holes 4 Square rings 7.65 x.68 (4 pcs.) supplied with valve Required surface finish of interface Models MB, MP 4 3 5

6 HA 5093 Valve Dimensions Dimensions in millimetres Models MC, MD Name plate Adjustment element for pressure setting 3 4 through mounting holes 4 Square rings 7.65 x.68 (4 pcs.) supplied with valve 4 3 Valve Dimensions Dimensions in millimetres Size 06 (Installation dimensions to ISO 440, DIN 4 340) Model MA Name plate Adjustment element for pressure setting 3 4 through mounting holes 4 Square rings 9.5 x.68 (4 pcs.) supplied with valve 4 Required surface finish of interface 3 6

7 Valve Dimensions Models MB, MP Dimensions in millimetres HA 5093 Name plate Adjustment element for pressure setting 3 4 through mounting holes 4 Square rings 9.5 x.68 (4 pcs.) supplied with valve 4 Models MC, MD 3 4 Required surface finish of interface 3 7

8 HA 5093 Valve Dimensions Dimensions in millimetres Model RA Name plate through mounting holes Model RA Name plate through mounting holes 8

9 Valve Dimensions Model RB Dimensions in millimetres HA 5093 Name plate through mounting holes Model RB Name plate through mounting holes 9

10 HA 5093 Spare Parts Seal kit for modular valve Seal kit for screw-in cartridge Model Dimensions, quantity Ordering number Screw-in cartridge - NBR O-ring 4 x.78 NBR 90 ( pc.) O-ring 7 x.8 NBR 70 ( pc.) O-ring 9.4 x.nbr 80 (pc.) Back-up ring BBP80B05-N x 7.43 x.4 ( pc.) Back-up ring BBP80B06-N x 9.03 x.4 ( pc.) O-ring 4 x.78 ( pc.) O-ring 7.7 x.78 ( pc.) Screw-in cartridge - Viton O-ring 9.4 x.(pc.) Back-up ring BBP80B x 7.43 x.4 ( pc.) Back-up ring BG30074-PT x.3 ( pc.) Model Dimensions, quantity Ordering number Modular valve size 04 - NBR Square ring 7.65 x.68 (4 pcs.) Modular valve size 04 - Viton O-ring 7.65 x.78 (4 pcs.) Modular valve size 06 - NBR Square ring 9.5 x.68 (4 pcs.) Modular valve size 06 - Viton O-ring 9.5 x.78 (4 pcs.) Model Typ, quantity Ordering number In-line valve RA- NBR In-line valve RA - NBR In-line valve RB- NBR In-line valve RB - NBR In-line valve RA- Viton In-line valve RA - Viton In-line valve RB- Viton In-line valve RB - Viton VSTI R/4-ED ( pc.) VSTI R3/8-ED (pc.) VSTI R/4-ED ( pc.) VSTI R/-ED ( pc.) VSTI R/4-ED ( pc.) VSTI R/4-ED - Viton ( pc.) VSTI R3/8-ED - Viton (pc.) VSTI R/4-ED - Viton ( pc.) VSTI R/-ED - Viton ( pc.) VSTI R/4-ED - Viton ( pc.)

11 Preferred Types of Valves Type Ordering Number Type Ordering Number VPP-04/S VPP-04/MP VPP-04/S VPP-04/MP VPP-04/S VPP-04/MP VPP-04/MP VPP-04/RA VPP-04/MP VPP-04/RA VPP-04/MP VPP-04/RA HA 5093

12 HA 5093 Caution! Ÿ Ÿ Ÿ Ÿ The packing foil is recyclable. The protecting plate can be returned to the manufacturer. Mounting studs must be ordered separately. Tightening torques are: size 04-5 Nm, size Nm. The technical information regarding the product presented in this catalogue is for descriptive purposes only. It should not be construed in any case as a guaranteed representation of the product properties in the sense of the law. ARGO-HYTOS a. s. CZ Vrchlabí Tel.: , Fax: sales.cz@argo-hytos.com Subject to alteration without notice!

13 Pilot operated pressure relief valve VPN-06 HA 56 /003 Size 06 p max up to 30 bar Q max up to 70 L/min Replaces HA 56 3/00 Cartridge, modular and in-line design Five pressure ranges Two pressure adjustment options: - screw with internal hexagon - hand knob with arrestment Functional Description Pressure relief valves VPN are pilot operated pressure valves designed for system pressure limitation. The pressure adjustment provides the adjustment screw (4). In its basic state, the valve is closed. The pressure acts on the face area of the control spool () and at the same time through orifice () on the control spool rear side, which is preloaded by a spring and further on through orifice (3) on the pilot valve ball (6). When the increasing system pressure reaches the value, which is preset by spring (5), the valve opens and the control flow passes through the pilot valves. The spool area which is preloaded by the spring becomes relieved, the spool control edge opens the radial bores in bushing (7) and the fluid passes from port P to T.The control flow is routed through groove (8) to channel T. Valve adjustment can be lockwired (9). The valve body and the adjustment screw are zinc coated. With models M and R the valve bodies are phosphate coated. P T

14 HA 56 Ordering Code VPN-06/ - Pilot operated pressure relief valve Nominal size without designation V Sealing NBR FPM (Viton) Model screw in cartridge modular valve, flow from A to T modular valve, flow from B to T modular valve, flow from P to T modular valve, flow from A to B and B to A modular valve, flow from A and B to T in-line valve, thread G3/8 in-line valve, thread G/ in-line valve, thread G3/8 in-line valve, thread G/ S MA MB MP MC MD RA RA RB RB S R Adjustment element screw with internal hexagon hand knob Pressure range 6 up to 63 bar 0 up to 00 bar 6 up to 60 bar up to 0 bar 3 up to 30 bar Functional Symbols FOR PREFERRED TYPES SEE BOLD TYPING IN ORDERING CODE AND TABLE OF PREFERRED TYPES ON PAGE 0 Model MA Model MB Model MP Model MC Model MD Valve side Subplate side Model RA Model RB Ordering Numbers of Sandwich / Valve Bodies (without screw-in cartridge) Valve body for modular valve - NBR Ordering number Valve body for modular valve - Viton Ordering number MA06-VP MA06-VP/V MB06-VP MB06-VP/V MP06-VP MP06-VP/V MC06-VP MC06-VP/V MD06-VP MD06-VP/V Valve body for in-line valve - NBR Ordering number Valve body for in-line valve - Viton Ordering number RA-06-VP RA-06-VP/V RA-06-VP RA-06-VP/V RB-06-VP RB-06-VP/V RB-06-VP RB-06-VP/V

15 Technical Data Nominal size mm 06 Max. flow rate L/min 70 Max. control flow L/min 0.35 Max. input pressure (ports P, A, B) bar 63; 00; 60; 0; 30 Max. output pressure (port T) bar 30 Working pressure related to flow bar see p-q characteristics Hydraulic fluid HA 56 Hydraulic oils of power classes HM, HV to CETOP-RP 9H in viscosity classes ISO VG 3, 46 and 68. Fluid temperature range for standard sealing (NBR) C Fluid temperature range for Viton sealing (FPM) C Viscosity range mm /s Max. degree of fluid contamination Class /8/5 according to ISO 4406 (999). Weight - model S - models MA, MB, MP - models MC, MD - models RA, RA, RB, RB Mounting position kg optional p-q Characteristics for Model S Measured at n= 35 mm /s and t = 40 C pressure range 3 Pressure p in bar pressure range pressure range 6 pressure range 0 pressure range 6 Flow Q in L/min p-q Characteristics Measured at n= 35 mm /s and t = 40 C MC Dp, p Emin in bar MA, MB, MP, MD S Flow Q in L/min 3

16 HA 56 Valve Dimensions Dimensions in millimetres Model S Mounting cavity Type designation Adjustment element (screw with internal hexagon 6 mm) Adjustment element R (hand knob) With all adjustment elements: - clockwise rotation - pressure increase - anticlockwise rotation - pressure decrease 3 Locknut hex. 7 mm 4 Wrench flats s = 4 mm - tightening torque 60 Nm 5 O-ring 9.4 x. NBR 80 ( pc.) supplied with valve 6 Combined sealing: O-ring 4 x.78 NBR 90 ( pc.) Back-up ring BBP80B05-N x 7.43 x.4 ( pcs.) supplied with valve 4

17 Valve Dimensions Dimensions in millimetres HA 56 Model MA 3 4 Required surfacefinish of interface Name plate Adjustment elements for pressure setting 3 4 through mounting holes 4 Square rings 9.5 x.68 (4 pcs.) supplied with valve 5

18 HA 56 Valve Dimensions Dimensions in millimetres Models MB and MP 3 4 Required surfacefinish of interface Name plate Adjustment elements for pressure setting 3 4 through mounting holes 4 Square rings 9.5 x.68 (4 pcs.) supplied with valve 6

19 Valve Dimensions Models MC and MD Dimensions in milimetres HA Required surfacefinish of interface Name plate Adjustment elements for pressure setting 3 4 through mounting holes 4 Square rings 9.5 x.68 (4 pcs.) supplied with valve Caution! Ÿ Ÿ Ÿ Ÿ The packing foil is recyclable. The protecting plate can be returned to the manufacturer. Mounting studs must be ordered separately. Tightening torque is 8.9 Nm. The technical information regarding the product presented in this catalogue is for descriptive purposes only. It should not be construed in any case as a guaranteed representation of the product properties in the sense of the law 7

20 HA 56 Valve Dimensions Dimensions in millimetres Model RA Name plate through mounting holes Model RA Name plate through mounting holes 8

21 Valve Dimensions Dimensions in milimetres HA 56 Model RB Name plate through mounting holes Model RB Name plate through mounting holes 9

22 HA 56 Spare Parts Set of the seals for modular valve Set of the seals for screw-in cartridge Model Dimensions, number Ordering number Screw-in cartridge - NBR O-ring 4 x.78 NBR 90 ( pc.) O-ring 7 x.8 NBR 70 ( pc.) O-ring 9.4 x. NBR 80 ( pc.) O-ring 9.5 x.78 NBR 90 ( pc.) Back-up ring BBP80B05-N x 7.43 x.4 ( pc.) Back-up ring BBP80B06-N x 9.03 x.4 ( pc.) O-ring 4 x.78 ( pc.) O-ring 7 x.8 ( pc.) Screw-in cartridge - Viton O-ring 9.4 x. ( pc.) O-ring 9.5 x.78 ( pc.) Back-up ring BBP80B x 7.43 x.4 ( pc.) Back-up ring BBP80B x 9.03 x.4 ( pc.) Model Dimensions, number Ordering number Modular valve - NBR Square ring 9.5 x.68 (4 pcs.) Modular valve - Viton O-ring 9.5 x.78 (4 pcs.) Model Typ, number Ordering number In-line valve RA - NBR In-line valve RA - NBR In-line valve RB - NBR In-line valve RB - NBR In-line valve RA - Viton In-line valve RA - Viton In-line valve RB - Viton In-line valve RB - Viton Preferred Types of Valves VSTI R/4-ED ( pc.) VSTI R3/8-ED ( pc.) VSTI R/4-ED ( pc.) VSTI R/-ED ( pc.) VSTI R/4-ED ( pc.) VSTI R/4-ED - Viton ( pc.) VSTI R3/8-ED - Viton ( pc.) VSTI R/4-ED - Viton ( pc.) VSTI R/-ED - Viton ( pc.) VSTI R/4-ED - Viton ( pc.) Type Ordering number Type Ordering number VPN-06/S-0S VPN-06/MP-3S VPN-06/S-S VPN-06/RA-0S VPN-06/S-3S VPN-06/RA-S VPN-06/MP-0S VPN-06/RA-3S VPN-06/MP-S ARGO-HYTOS a. s. CZ Vrchlabí Tel.: , Fax: sales.cz@argo-hytos.com Subject to alteration without notice!

23 Pilot operated pressure relief valve VPN-0/MR HA 564 /005 Size PSI(350 bar) US GPM (50 L/min) Replaces HA 564 /003 TA A P B TB Modular and in-line design Five pressure ranges TA A P B TB Two pressure adjustment options: - screw with internal hexagon - hand knob with arrestment Installation dimensions to ISO 440 and DIN A0 Functional Description Pressure relief valves VPN are pilot operated pressure valves designed for system pressure limitation. The pressure adjustment is controled by the adjustment screw (4). In its basic state, the valve is closed. The pressure acts on the face area of the control spool () and at the same time through orifice () on the control spool rear side, which is preloaded by a spring and further on through orifice (3) on the pilot valve ball (6). When the increasing system pressure reaches the value, which is preset by spring (5), the valve opens and the control flow passes through the pilot valve. The spool area which is preloaded by spring becomes relieved, the spool control edge opens the radial bores in bushing (7) and the fluid passes from port B to T. The control flow is routed through slot (8) to port T. When an accurate pressure control, which does not depend on pressure variations in port T (only for models RC and RC3, see Functional Symbols), is required the model "Y" with external port for pilot flow is to be used. If a relieving of the valve on a lower pressure as that set up by the spring (5) is needed, the model with port "X" (0) is to be used. The valve body and the adjustment screw are zinc coated. With models M and R the valve bodies are phosphate coated.

24 HA 564 Ordering Code VPN-0/ - Pilot operated pressure relief valve without designation V Seals NBR FPM (Viton) Nominal size 0 S R Adjustment element screw with internal hexagon hand knob Model modular valve, flow from A to TA modular valve, flow from B to TB modular valve, flow from P to TA modular valve, flow from A to B and B to A modular valve, flow from A to TA and B to TB in-line valve, thread P, P - G3/4; T-G in-line valve, thread P - G3/4; T-G in-line valve, thread P - G3/4; T - G; X - G/4 in-line valve, thread P - G3/4; T - G; Y - G/4 MA MB MP MC MD RA RB RC RC3 Pressure range 6 up to 93 PSI(63 bar) 0 up to 450 PSI(00 bar) 6 up to 3 PSI(60 bar) up to 3045 PSI(0 bar) 3 up to 5076 PSI(350 bar) Model with two pressure relief cartridges 3/0 pressure setting 5076 PSI(350 bar) in port A and 450 PSI(00 bar) in port B, etc. Functional Symbols FOR PREFERRED TYPES SEE BOLD TYPING IN ORDERING CODE AND TABLE OF PREFERRED TYPES ON PAGE 7 Model MA Model MB Model MP Model MC Model MD Model RA Model RB Model RC Model RC3 Valve side Subplate side Ordering Numbers of Sandwich / Valve Bodies (without screw-in cartridge) Valve body for modular valve - NBR Ordering number Valve body for modular valve - Viton Ordering number MA0-VP MA0-VP/V MB0-VP MB0-VP/V MP0-VP MP0-VP/V MC0-VP MC0-VP/V MD0-VP MD0-VP/V Valve body for in-line valve - NBR Ordering number Valve body for in-line valve - Viton Ordering number RA-0-VP RA-0-VP/V RB-0-VP RB-0-VP/V RC-0-VP (RC3-0-VP) RC-0-VP/V (RC3-0-VP/V)

25 Technical Data HA 564 Nominal size mm 0 Max. flow rate US GPM (L/min) (50) Max. control flow US GPM (L/min) 0.3 (0.5) Max. input pressure (ports P, A, B) PSI(bar) 93 (63); 450 (00); 3 (60); 3045 (0); 5076 (350) Max. output pressure (port T) PSI(bar) 5076 (350) Working pressure related to flow PSI(bar) see p-q characteristics Hydraulic fluid Hydraulic oils of power classes HM, HV to CETOP-RP 9H in viscosity classes ISO VG 3, 46 and 68. Fluid temperature range for standard sealing (NBR) F ( C) ( ) Fluid temperature range for Viton sealing (FPM) F ( C) ( ) Viscosity range SUS (mm /s) ( ) Max. degree of fluid contamination Class /8/5 according to ISO 4406 (999). Weight - models MA, MB, MP - models MC, MD - models RA, RB, RC, RC3 Mounting position p-q Characteristics lbs (kg) 5.74 (.6) (3.0) (.7) optional Measured at n= 66 SUS (35 mm /s) and t = 04 F (40 C) Pressure setting p in PSI(bar) pressure range 3 pressure range pressure range 6 pressure range 0 pressure range 6 Flow Q in US GPM (L/min) p-q Characteristics Measured at n= 66 SUS (35 mm /s) and t = 04 F (40 C) Dp, p Emin in PSI(bar) MC MP MA, MB Flow Q in US GPM (L/min) 3

26 HA 564 Valve Dimensions Dimensions in inches and millimetres (in brackets) Model MA Name plate Adjustment elements for pressure setting 3 4 through mounting holes 4 Square rings.4 x.68 (5 pcs.) supplied with each valve 3 4 Model MB 3 Required surface finish of interface 4 4

27 Valve Dimensions Model MP Dimensions in inches and millimetres (in brackets) HA 564 Name plate Adjustment elements for pressure setting 3 4 through mounting holes 4 Square rings.4 x.68 (5 pcs.) supplied with each valve 3 4 Models MC, MD Required surface finish of interface 3 4 5

28 HA 564 Valve Dimensions Model RA Dimensions in inches and millimetres (in brackets) 3 Name plate through mounting holes 3 x M6 for attachment under panel Model RB 3 Name plate through mounting holes 3 x M6 for attachment under panel 6

29 Valve Dimensions Model RC, RC3 Dimensions in inches and millimetres (in brackets) HA Name plate through mounting holes 3 x M6 for attachment under panel Spare Parts Model Dimensions, number Ordering number Modular valve - NBR Square ring.4 x.68 NBR 90 (5 pcs.) Modular valve - Viton O-ring.4 x.78 (5 pcs.) Model Typ, number Ordering number In-line valve RA - NBR In-line valve RB, RC, RC3 - NBR In-line valve RA - Viton In-line valve RB, RC, RC3 - Viton VSTIR/4-ED ( pc.) VSTIR3/4-ED ( pc.) VSTIR/4-ED ( pc.) VSTIR/4-ED - Viton ( pc.) VSTIR3/4-ED - Viton ( pc.) VSTIR/4-ED - Viton ( pc.) Preferred Types of Valves Type Ordering number Type Ordering number VPN-0/MP-0S VPN-0/RA-0S VPN-0/MP-S VPN-0/RA-S VPN-0/MP-3S VPN-0/RA-3S

30 HA 564 Caution! Ÿ Ÿ The packing foil is recyclable. The technical information regarding the product presented in this catalogue is for descriptive purposes only. It should not be construed in any case as a guaranteed representation of the product properties in the sense of the law. 8 ARGO-HYTOS a. s. CZ Vrchlabí Tel.: , Fax: sales.cz@argo-hytos.com Subject to alteration without notice!

31 Directly operated pressure reducing valves VRP-04 HA 54 5/005 Size PSI (30 bar) US GPM (0 L/min) Replaces HA 54 6/003 For stacking assemblies 4 pressure ranges Pressure reduction in ports A or P Model A with check valve Installation dimensions to ISO440/CETOP-RP H Functional Description The pressure valves VRP are directly operated reducing valves for vertical stacking assemblies designed as 3-way valves, i.e. with pressure protection of the secondary circuit. The valve consists of the valve body (), control spool (), spring (3), adjustment element (4) and the plug G /4 (5) for pressure measuring and, if necessary, of a check valve. Model A With this model, the fluid enters into the valve body from the primary circuit through port A and passes through the metering edge, where its pressure is reduced.the reduced pressure corresponds with the setting of the control spring.at the same time, this pressure affects also the surface area of the control spool opposed to the spring (the pressure can be measured at the port G /4 which is normally closed by plug 5).Thus the static balance of the spool is ensured.if the reduced pressure changes, a respective control action takes place and the reduced pressure returns to its preset value.the flow from the output port A passes then to the user.if pressure behind the valve increases due to the effect of the load acting on the user, the spool shifts further against the spring until the second metering edge opens and the excessive flow drains through port T.The leakage from the spring room is also routed to port T. The reverse free-flow from port A to port A passes through a check valve which is connected parallel to the metering edge. Model B With model B, the pressure reduction follows from port P to port P, but it takes place only when the flow in port B passes in the direction to the user (not opposite).the protection of the secondary circuit is also ensured for one flow direction only. Model P With model P, the pressure reduction follows from port P to port P, but is effective in both flow directions through the directional valve (as well as the protection of the secondary circuit). The valves are delivered with basic surface treatment. The valve body is phosphate coated, whereas the surfaces of the other parts are zinc coated. A B A B

32 HA 54 Ordering Code VRP-04- / Reducing valve, directly operated Nominal size 6 6 Pressure range Adjustable up to 363 PSI (5 bar) Adjustable up to 94 PSI (63 bar) Adjustable up to 3 PSI (60 bar) Adjustable up to 3046 PSI (0 bar) Pressure reduction Pressure control In port A from port A A In port P from port B B In port P from port P P S Adjustment element Screw with outside hexagon 4 mm FOR PREFERRED TYPES SEE BOLD TYPING IN ORDERING CODE AND TABLE OF PREFERRED TYPES ON PAGE 3 Functional Symbols VRP -04-A./.. VRP -04-B./.. VRP -04-P./.. Technical Data Nominal size mm 04 Maximal flow US GPM (L/min) 5.3 (0) Max.imput pressure PSI (bar) (30) Reduced pressure PSI (bar) 363 (5) Hydraulic fluid 94 (63) 3 (60) 3046 (0) Hydraulic oils of power classes HM, HV to CETOP RP 9 H in viscosity classes ISO VG 3, 46 and 68 Fluid temperature range F ( C) ( ) Viscosity range SUS (mm /s) ( ) Maximum degree of fluid contamination Class /8/5 to ISO 4406 (999). Weight - model A model B, P Mounting position lb (kg).8 (0.8).3 (0.60) optional

33 p-q Characteristics Measured at = 66 SUS (35 mm /s) and t = 04 F (40 C) HA 54 Safety pressure in PSI (bar) 3046 (0) 3 (60) 94 (63) 363 (5) Reduced pressure in PSI (bar) Flow in US GPM (L/min) p-q Characteristics 3 Model A Models P und B Pressure drop in PSI (bar) Model A Models P und B Model A Flow in US GPM (L/min) Preferred Types of Valves Caution! Type Ordering number VRP-04-PS/ VRP-04-PS/ VRP-04-PS/ The packing foil is recyclable. If the valve is used separately without a directional valve, a cover plate DK-04/3-3 with the same installation dimensions can be ordered. This plate connect port A with port P - see catalogue Adapter and Blanking Plates HA Mounting bolts M5x50 or studs must be ordered separately. Tightening torque of the screws is 3.7 ft-lbs (5 Nm). For applications outside these parameters, please consult the manufacturer. The technical information regarding the product presented in this catalogue is for descriptive purposes only. It should not be construed in any case as a guaranteed representation of the product properties in the sense of the law. 3

34 HA 54 Valve Dimensions Dimensions in inches and millimetres (in brackets) Model A Type VRP-04-AS/ Model B and P Type VRP-04-B(P)S/.. Name plate Pressure adjustment element S - screw with outside hex.s=4 mm 3 Plug for pressure gauge connection, thread G /4 4 Locknut 5 4 through mounting holes 6 SQUARE RING 7.65x.68 (4 pcs.), supplied with each valve Required surface finish of interface. ARGO-HYTOS a.s. CZ Vrchlabí Tel.: , Fax: sales.cz@argo-hytos.com 4 Subject to alteration without notice!