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Danfoss PVG 32 Technical Information

Proportional valve group
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Technical Information
Proportional Valve Group
PVG 32
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  • Page 1 Technical Information Proportional Valve Group PVG 32 powersolutions.danfoss.com...
  • Page 2 Technical Information PVG 32 Proportional Valve Group Revision history Table of revisions Date Changed November 2017 Dimenions section changes. 0803 August 2017 Added informational note to Technical Data section. 0802 March 2016 Pressure-compensated PVB, open center PVP; Characteristics for float position 0801 main spools.

  • Page 3: Table Of Contents

    Examples of how to use the characteristics for pressure control spools..............38 Characteristics for float position main spools........................39 Hydraulic systems Manually actuated PVG 32 – fixed displ. pump........................41 Electrically actuated PVG 32 – variable displ. pump......................42 © Danfoss | November 2017...
  • Page 4 Technical Information PVG 32 Proportional Valve Group Contents Fluid Specifications Oil.........................................43 Mineral oil....................................43 Non-flammable fluids................................43 Filtration......................................43 Dimensions and ports description PVM, control lever positions..............................46 Surface treatment..................................46 Parts description and code numbers PVP schematics and code numbers............................47 PVB, basic module code numbers............................

  • Page 5: Pvg General Description

    Technical Information PVG 32 Proportional Valve Group PVG general description PVG is a hydraulic, load-sensing proportional valve, designed for optimal machine performance and maximum design flexibility. The PVG valve design is based on a modular concept that enables machine designers to specify a valve solution suitable for multiple market segments across multiple applications.

  • Page 6: Pvg Modules

    Technical Information PVG 32 Proportional Valve Group PVG general description PVG modules PVP, pump side modules overview • Built-in pressure relief valve • Pressure gauge connection • Versions: Open center version for systems with fixed displacement pumps ‒ Closed center version for systems with variable displacement pumps ‒...

  • Page 7: Remote Control Units

    Technical Information PVG 32 Proportional Valve Group PVG general description Remote control units • Electrical remote control units: ‒ ‒ PVRE, PVRET JS1000 Ball grip ‒ ‒ PVREL JS1000 PRO grip ‒ ‒ PVRES JS2000 ‒ ‒ Prof 1 JS6000 ‒...

  • Page 8: Open Center Pvp

    PVG general description Open center PVP Description of the example: PVG 32 with open center PVP (fixed displacement pump) and PVB with flow control spool. When the pump is started and the main spools in the individual basic modules (11) are in the neutral position, oil flows from the pump, through connection P, across the pressure adjustment spool (6) to tank.

  • Page 9: Sectional View

    Technical Information PVG 32 Proportional Valve Group PVG general description Sectional view LS B LS A V310106.A 1. Pressure relief valve 11. Main spool 2. Pressure reduction valve for pilot oil supply 12. LS pressure limiting valve 3. Pressure gauge connection 13.

  • Page 10: Load Sensing For Variable Displacement Pump Supply

    Technical Information PVG 32 Proportional Valve Group PVG general description Load sensing for variable displacement pump supply The pump receives fluid directly from the reservoir through the inlet line. A screen in the inlet line protects the pump from large contaminants.

  • Page 11: Safety In Application

    Technical Information PVG 32 Proportional Valve Group Safety in application All types of control valves (incl. proportional valves) can fail, thus the necessary protection against the serious consequences of function failure should always be built into the system. For each application an assessment should be made for the consequences of pressure failure and uncontrolled or blocked movements.

  • Page 12: Example Of A Control System For Manlift

    Technical Information PVG 32 Proportional Valve Group Safety in application Example of a control system for manlift Example of a control system for man-lift Example of a control system for man-lift using PVE Fault monitoring input signals and signals from external sensors to ensure the PLUS+1 ®...
  • Page 13 Technical Information PVG 32 Proportional Valve Group Safety in application PVG 32 – used in system with fixed displacement pumps: • PVSK, commonly used in crane application - full flow dump • PVPX, LS dump to tank PVG 100 – alternative LS dump/pilot supply disconnect: •...

  • Page 14: Examples Of Wiring Block Diagram

    Technical Information PVG 32 Proportional Valve Group Safety in application Examples of wiring block diagram Example 1 Emergency Man present switch stop PVE 1 Neutral detection / Supply control PVEH with AMP connector signal ≠ Delay neutral Error PVE 2...
  • Page 15 Technical Information PVG 32 Proportional Valve Group Safety in application Example 2 Emergency Man present Stop switch PVE 1 PVEH-DI Neutral detection / Supply control AMP supply connector signal ≠ Delay neutral Error PVEH-DI AMP connector DI-A Fault detection DI-B...

  • Page 16: Function

    Technical Information PVG 32 Proportional Valve Group Function There is a wide range of pressure settings and fluid flow controls. Load sensing controls The LS control matches system requirements for both pressure and flow in the circuit regardless of the working pressure.

  • Page 17: Remote Pressure Compensated Controls

    PVPC with check valve for open center PVP PVPC with check valve is used in systems where it is necessary to operate the PVG 32 valve by means of the electrical remote control without pump flow. When the external solenoid valve is opened, oil from the pressure side of the cylinder is fed via the PVPC through the pressure reducing valve to act as the ©...
  • Page 18 Technical Information PVG 32 Proportional Valve Group Function pilot supply for the electrical actuators. This means that a load can be lowered by means of the remote control lever without starting the pump. The built-in check valve prevents the oil from flowing via the pressure adjustment spool to tank. With the pump functioning normally the external solenoid valve is closed to ensure that the load is not lowered due to the pilot supply oil flow requirement of approximately 1 l/min [0.25 US gal/min].

  • Page 19: Pvpc Without Check Valve For Open Or Closed Center Pvp

    PVPC without check valve for open or closed center PVP PVPC without check valve is used in systems where it is necessary to supply the PVG 32 valve with oil from a manually operated emergency pump without directing oil flow to the pilot oil supply (oil consumption about 0.5 l/min) [0.13 US gal/min].

  • Page 20: Pvmr, Friction Detent

    When the main pump flow fails, the external shuttle valve ensures that the oil flow from the manually operated emergency pump is used to pilot open the over center valve and lower the load. The load can only be lowered using the mechanical operating lever of the PVG 32 valve. PVMR, friction detent The friction detent PVMR allows the directional spool to be held in any position, resulting in infinitely variable, reversible, pressure compensated flow.

  • Page 21: Pvbs, Main Spools For Flow Control (Linear Characteristic)

    Technical Information PVG 32 Proportional Valve Group Function PVBS, main spools for flow control (linear characteristic) PVBS main spools with linear characteristic have less dead band than standard spools and a proportional ratio between control signal and oil flow in the range beyond the dead band. PVBS with linear characteristic must never be used together with PVEM electrical actuators.

  • Page 22: Pvbs, Main Spools With Pressure Compensated Control

    Technical Information PVG 32 Proportional Valve Group Function PVBS, main spools with pressure compensated control The PC control maintains constant system pressure in the hydraulic circuit by varying the output flow of the pump. Used with a closed center control valve, the pump remains in high pressure standby mode at the PC setting with zero flow until the function is actuated.

  • Page 23: Pvbs, Main Spools For Pressure Control

    Technical Information PVG 32 Proportional Valve Group Function PVBS, main spools for pressure control The spools are designed in such a way that the pump pressure is controlled by the spool travel. The main spool must be displaced until the pump pressure just exceeds the load pressure before the working function is applied.

  • Page 24: Pressure Controlled Spool Application

    Technical Information PVG 32 Proportional Valve Group Function Fig. 4 Flow controlled spool P005 625 Fig. 5 Pressure controlled spool P005 626 The opening area of the variable orifice is at maximum at initial actuation and 0 at full stroke of the spool and then the pressure created between the two orifices is led into the LS system in the usual way.

  • Page 25: Sizing

    Technical Information PVG 32 Proportional Valve Group Function • Lifting/lowering movement • Slewing movement with cylinders • For the main lifting/lowering function on a crane it is recommended to fit a "half" pressure control spool. This means that the spool is designed with a normal flow control on the lifting port and pressure control connected to the port where the pilot signal to the over-center valve is acting.

  • Page 26: Pvpx, Electrical Ls Unloading Valve

    Technical Information PVG 32 Proportional Valve Group Function PVPX, electrical LS unloading valve PVPX is a solenoid LS unloading valve. PVPX is fitted into the pump side module enabling a connection to be made between the LS and the tank lines. Thus the LS signal can be relieved to tank by means of an electric signal.

  • Page 27: Pvg 32 Technical Data

    In open circuit systems with short P-hoses/tubes, attention should be paid to pressure peaks at flows >100 l/min [26.4 US gal/min]. For a system with mid inlet PVPVM. In open circuit systems with short P-hoses/tubes,For 130 l/min flow contact Danfoss Product Application Engineering. Spool data Standard ±...

  • Page 28: Pvm Operating Force

    Technical Information PVG 32 Proportional Valve Group PVG 32 Technical Data PVM operating force Operating torque for PVM Spool displacement Operating torque N•m [lb•in] PVM + PVMD, PVE PVM + PVH PVM + PVMR PVM+PVMF From neutral position 2.2 ±0.2 2.5 ±0.2...

  • Page 29: Technical Characteristics

    Technical Information PVG 32 Proportional Valve Group Technical characteristics The measured characteristics in this catalog are typical measured values. During measuring a mineral based hydraulic fluid with a viscosity of 21 mm /s [102 SUS] at a temperature of 50 °C [122 °F] was used.

  • Page 30: Pvb, Basic Modules Oil Flow Characteristics

    Technical Information PVG 32 Proportional Valve Group Technical characteristics PVB, basic modules oil flow characteristics The fluid flow for the individual spool depends on type of basic module (with/without compensation) and type of pump (fixed or variable displacement). Linear fluid flow depending on spool type = Signal voltage;...

  • Page 31: Pressure-Compensated Pvb, Open Center Pvp

    Technical Information PVG 32 Proportional Valve Group Technical characteristics Pressure-compensated PVB, open center PVP The fluid flow is dependent on the supplied pump fluid flow. The characteristics are plotted for a pump oil flow, Q , corresponding to the rated maximum spool oil flow, Q .

  • Page 32: Pvb Without Pressure Compensation, Open Center Pvp

    Technical Information PVG 32 Proportional Valve Group Technical characteristics PVB without pressure compensation, open center PVP The spool flow Q is dependent on the supplied pump fluid flow, Q The characteristics apply to supply oil flow of 130 l/min [34.3 US gal/min] with the actuation of one basic module and the supply flow level.
  • Page 33 Technical Information PVG 32 Proportional Valve Group Technical characteristics Characteristic for fully displaced flow control spools © Danfoss | November 2017 BC00000038en-US0803 | 33...

  • Page 34: Pvb Without Pressure Compensation, Closed Center Pvp

    Technical Information PVG 32 Proportional Valve Group Technical characteristics PVB without pressure compensation, closed center PVP Set pressure difference between pump pressure and LS signal = 10 bar [145 psi]. Set pressure difference between pump pressure and LS signal = 20 bar [290 psi].
  • Page 35 Technical Information PVG 32 Proportional Valve Group Technical characteristics The oil flow is dependent on the pressure difference between the pump pressure and the LS signal. Normally the pressure difference is set at the LS pump regulator. Also take into consideration pressure drop from the pump to the PVG valve group.

  • Page 36: Pvlp, Shock And Pvla, Suction Valves

    Technical Information PVG 32 Proportional Valve Group Technical characteristics PVLP, shock and PVLA, suction valves PVLP is set at an oil flow of 10 l/min [2.6 US gal/min]. The shock valve PVLP is designed to absorb shock effects. Consequently, it should not be used as a pressure relief valve.
  • Page 37 Technical Information PVG 32 Proportional Valve Group Technical characteristics Size C: Size D: Example 2 Size E: © Danfoss | November 2017 BC00000038en-US0803 | 37...

  • Page 38: Pressure Build-Up For Pressure Controlled Spools

    Technical Information PVG 32 Proportional Valve Group Technical characteristics Pressure build-up for pressure controlled spools Max. oil flow can be reduced by about 50% without limitation of maximum pressure by limiting the main spool travel from 7 mm [0.28 in] to 5.5 mm [0.22 in].

  • Page 39: Characteristics For Float Position Main Spools

    Technical Information PVG 32 Proportional Valve Group Technical characteristics Characteristics for float position main spools Characteristic of oil flow, spool travel and voltage • 4.8 mm [0.19 in] spool displacement in direction A gives maximum oil flow to port A •...
  • Page 40 Technical Information PVG 32 Proportional Valve Group Technical characteristics Spool E can give 100 l/min [26.4 US gal/min] pressure compensated oil flow due to a higher pressure drop across spool E. This occurs during spool actuation only. Pressure drop A/B → T in float position 40 | ©...

  • Page 41: Hydraulic Systems

    Technical Information PVG 32 Proportional Valve Group Hydraulic systems Manually actuated PVG 32 – fixed displ. pump Example schematic of manually actuated PVG 32 – fixed displacement pump © Danfoss | November 2017 BC00000038en-US0803 | 41...

  • Page 42: Electrically Actuated Pvg 32 - Variable Displ. Pump

    Technical Information PVG 32 Proportional Valve Group Hydraulic systems Electrically actuated PVG 32 – variable displ. pump Example schematic of electrically actuated PVG 32 – variable displacement pump (electrical actuator, shock valves, relief valve) 42 | © Danfoss | November 2017...

  • Page 43: Fluid Specifications

    Non-flammable fluids Phosphate-esters (HFDR fluids) can be used without special precautions. However, dynamic seals must be replaced with FPM (Viton) seals. Please contact the Danfoss Sales Organization if the PVG 32 valve is to be used with phosphate-esters. The following fluids should only be used according to agreement with the Danfoss Sales Organization for: •...

  • Page 44: Dimensions And Ports Description

    Technical Information PVG 32 Proportional Valve Group Dimensions and ports description 18.5 38.5 37.5 87.8 37.5 70.7 Shock and suction valve, PVLP: G¼, 12 mm [½–20, 0.47 in] deep G Pressure gauge connection: G¼, 12 mm [½–20, 0.47 in] deep H Plug for external pilot oil supply, PVPC: G½, 12 mm [½–20, 0.47 in] deep...
  • Page 45 Technical Information PVG 32 Proportional Valve Group Dimensions and ports description L1 and L2 dimensions [in] [3.23] [5.12] [7.01] [8.90] [10.79] [12.68] [14.57] [16.46] [18.35] [20.24] [22] [24] [in] [5.51] [7.44] [9.37] [11.30] [13.23] [15.16] [17.09] [19.02] [20.95] [22.87] [24.5] [26.4]...

  • Page 46: Pvm, Control Lever Positions

    This will not affect the performance of the PVG valve group. To prevent/reduce rust development, Danfoss recommend the PVG valve group to be painted. Rust on the surface is not seen as a valid complaint issue, neither on painted or unpainted PVG valve groups.

  • Page 47: Parts Description And Code Numbers

    Technical Information PVG 32 Proportional Valve Group Parts description and code numbers PVP schematics and code numbers Symbol Description Code number Open center pump side module for pumps P = G ½ 157B5000 with fixed displacement. T = G ¾...
  • Page 48 Technical Information PVG 32 Proportional Valve Group Parts description and code numbers Symbol Description Code number Closed center pump side module for pumps P = G ½ 157B5013 with variable displacement T = G ¾ With pilot oil supply P = 7/8–14...
  • Page 49 Technical Information PVG 32 Proportional Valve Group Parts description and code numbers PVP, pump side modules (continued) Symbol Description Code number Closed center pump side module for pumps with P, T = G ¾ 157B5181 variable displacement. P, T = 1 1/16–12...

  • Page 50: Pvb, Basic Module Code Numbers

    Technical Information PVG 32 Proportional Valve Group Parts description and code numbers PVB, basic module code numbers PVB without adjustable LS pressure limiting valves Symbol Description Code number No facilities for Facilities for shock shock valves A/B valves A/B 157B6000...
  • Page 51 Technical Information PVG 32 Proportional Valve Group Parts description and code numbers PVB without adjustable LS pressure limiting valves (continued) Symbol Description Code number No facilities for Facilities for shock shock valves A/B valves A/B 157B6200 157B6230 Non-damped compensator valve G ½...
  • Page 52 Technical Information PVG 32 Proportional Valve Group Parts description and code numbers PVB with adjustable LS pressure limiting valves Symbol Description Code number No facilities for Facilities for shock valves A/B shock valves A/B With non-damped compensator G ½ 157B6203...

  • Page 53: Pvla, Suction Valve (Fitted In Pvb)

    Technical Information PVG 32 Proportional Valve Group Parts description and code numbers PVLA, suction valve (fitted in PVB) PVLA, suction valve Symbol Description Code number Suction valve for port A and/or B. 157B2001 Plug for connecting the nonactive port to tank, when using a 157B2002 single acting spool.

  • Page 54: Pvm, Pvmd, Pvmr, And Pvmf Code Numbers

    Technical Information PVG 32 Proportional Valve Group Parts description and code numbers PVLP, shock and suction valve Description Symbol Shock and suction valve for port A and/or B. (Not adjustable). Lifetime 200.000 actuations. PVM, PVMD, PVMR, and PVMF code numbers...

  • Page 55: Pvh, Hydraulic Actuation Code Numbers

    Technical Information PVG 32 Proportional Valve Group Parts description and code numbers PVMF, mechanical float position Symbol Description Material Code number Anodized PVMF, aluminium 157B0005 Mechanical float position lock PVH, hydraulic actuation code numbers PVH, hydraulic actuation Symbol Description Material...

  • Page 56: Pvas, Assembly Kit Code Numbers

    Technical Information PVG 32 Proportional Valve Group Parts description and code numbers PVS, end plate (continued) Symbol Description Mounting Code number threads PVSI, without active elements 157B2014 Without connections. 157B2004 V310062.A PVSI, without active elements G 1/4 10 mm deep 157B2015 LX connections.

  • Page 57: Pvpc, Plug For External Pilot Oil Supply

    Technical Information PVG 32 Proportional Valve Group Parts description and code numbers PVPC, plug for external pilot oil supply PVPC, plug for external pilot oil supply Symbol Description Code number PVP, G 1/2, 157B5400 Plug without check valve for open...
  • Page 58 Technical Information PVG 32 Proportional Valve Group Parts description and code numbers PVB is with LS shuttle valve Code number 157B..PVB is without LS shuttle valve 7200 7201 7202 7203 3-way, 3-position Closed neutral position, P → A 7301...

  • Page 59: Standard Fc Spools, Hydraulic Actuation

    Technical Information PVG 32 Proportional Valve Group Parts description and code numbers PVB is with LS shuttle valve Code number 157B..PVB is without LS shuttle valve 7524 7523 7522 7521 7501 7502 7503 4-way, 3-position Throttled, B → T in neutral position...

  • Page 60: Fc Spools For Mechanical Float Position, Pvmf

    Technical Information PVG 32 Proportional Valve Group Parts description and code numbers FC spools for mechanical float position, PVMF PVB is with LS shuttle valve Code number 157B..PVB is without LS shuttle valve Press. compensated flow: l/min [US gal/min]...

  • Page 61: Fc Spools With Linear Flow Characteristic

    Technical Information PVG 32 Proportional Valve Group Parts description and code numbers FC spools with linear flow characteristic PVB is with LS shuttle valve Code number 157B..PVB is without LS shuttle valve Press. compensated flow: l/min [US gal/min] ISO symbol Symbol Press.
  • Page 62 Technical Information PVG 32 Proportional Valve Group Parts description and code numbers PVB is with LS shuttle valve Code number 157B..PVB is without LS shuttle valve 7033 7032 7031 7030 7035 7015 7010 7011 7012 7013 4-way, 3-position Closed neutral position, PC → A and B...

  • Page 63: Standard Pc Spools, Hydraulic Actuation

    Technical Information PVG 32 Proportional Valve Group Parts description and code numbers PVB is with LS shuttle valve Code number 157B..PVB is without LS shuttle valve 7473 7472 7471 7470 7452 7453 4-way, 3-position Throttled, A → T neutral position, PC → B...

  • Page 64: Order Specification

    Reordering The space at the top right-hand corner of the form is for Danfoss to fill in. The code number for the whole of the specified valve group (PVG No.) is entered here.

  • Page 65: Pressure Setting Limits

    Technical Information PVG 32 Proportional Valve Group Order Specification Pressure setting limits The maximum setting pressure for the pressure limiting valves LS or LS depends on the chosen pressure setting for shock valve PVLP. The maximum values recommended to avoid interaction can be read in the following table.

  • Page 66: Pvg 32 Specification Sheet

    Standard and option assembly The PVG 32 valve group is assembled the way the module selection chart shows if the code number for PVM is written in field 'a', and the code number for PVMD, PVE or PVH in field 'c'.
  • Page 67 Technical Information PVG 32 Proportional Valve Group © Danfoss | November 2017 BC00000038en-US0803 | 67...
  • Page 68 Phone: +86 21 3418 5200 Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without changes being necessary in specifications already agreed.

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