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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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Summary of Contents for Danfoss PVG 32

  • Page 1 Technical Information Proportional Valve Group PVG 32 powersolutions.danfoss.com...
  • Page 2 Drawings adjusted in size May 2014 Fluid consumption change page 30 February 2014 Spec. sheet update January 2014 Converted to Danfoss layout – DITA CMS February 2006 - Aug 2013 Various changes BA - HC January 2005 New Edition 520L0344 | BC00000038en-US0802 ©...

  • Page 3: Table Of Contents

    Remote pressure compensated controls..........................16 Remote pressure compensated system characteristics:.................... 17 Typical applications for remote pressure compensated systems:................17 PVG 32 main spool with pressure compensated control....................17 Pressure compensated system characteristics......................18 Typical applications for pressure compensated systems...................18 PVPC adapter for external pilot oil supply..........................18 PVPC with check valve for open center PVP........................
  • Page 4 Examples of how to use the characteristics for pressure control spools..............42 Characteristics for float position main spools........................43 Hydraulic systems Manually actuated PVG 32 – fixed displ. pump........................45 Electrically actuated PVG 32 – variable displ. pump......................46 Other operating conditions Oil.........................................47...

  • Page 5: General Description

    PVG 32 Proportional Valve Group General description PVG 32 is a hydraulic load sensing valve designed to give maximum flexibility. From a simple load sensing directional valve, to an advanced electrically controlled load-independent proportional valve. The PVG 32 modular system makes it possible to build up a valve group to meet requirements precisely.

  • Page 6: Actuation Modules

    Technical Information PVG 32 Proportional Valve Group General description LS pressure limiting valves individually adjustable for ports A and B ‒ Different interchangeable spool variants ‒ All versions suitable for mechanical, hydraulic and electrical actuation ‒ Actuation modules The basic module is always fitted with mechanical actuator PVM and PVMD, which can be combined with the following as required: •...

  • Page 7: Pvg 32 With Open Center Pvp

    PVG 32 with open center PVP 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 8: Pvg 32 With Closed Center Pvp

    PVG 32 with closed center PVP PVG 32 with closed center PVP (variable displacement pump) and PVB with flow control spool. In the closed center version of PVP an orifice (5) and a plug (7) have been fitted instead of the plug (4).

  • Page 9: Pvg 32 Sectional View

    Technical Information PVG 32 Proportional Valve Group General description PVG 32 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 Technical Information PVG 32 Proportional Valve Group General description The pump outlet feeds directional control valves such as PVG-32, hydraulic integrated circuits (HIC), and other types of control valves. The PVG valve directs and controls pump flow to cylinders, motors and other work functions. A heat exchanger cools the fluid returning from the valve.

  • 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: Control System Example

    Technical Information PVG 32 Proportional Valve Group Safety in application Control system example Example of a control system for manlift using PVE Fault monitoring input signals and signals from external sensors to ensure the PLUS+1 main ® controllers correct function of the manlift.
  • Page 13 It is the responsibility of the equipment manufacturer that the control system incorporated in the machine is declared as being in conformity with the relevant machine directives. PVG 32 – mainly used in system with fixed displacement pumps: • PVSK, commonly used in crane application - full flow dump •...

  • Page 14: Examples Of Wiring Block Diagram

    Technical Information PVG 32 Proportional Valve Group Safety in application • PVPE, full flow dump for the PVG 120 • External cartridge valve connecting LS pressure to tank Examples of wiring block diagram Example of a typical wiring block diagram using PVEH with neutral power off switch and fault monitoring output for hydraulic deactivation.
  • Page 15 Technical Information PVG 32 Proportional Valve Group Safety in application Example of fault monitoring for deactivation of the hydraulic system with extra fault inputs using the PVE’s with DI (Direction Indication) function. Emergency Man present Stop switch PVE 1 Neutral detection / Supply control...

  • Page 16: Function

    Technical Information PVG 32 Proportional Valve Group Function Load sensing controls The LS control matches system requirements for both pressure and flow in the circuit regardless of the working pressure. Used with a closed center control valve, the pump remains in low-pressure standby mode with zero flow until the valve is opened.

  • Page 17: Remote Pressure Compensated System Characteristics

    • Wood chippers PVG 32 main spool 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 18: Pressure Compensated System Characteristics

    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 pilot supply for the electrical actuators.

  • 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 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. 520L0344 | BC00000038en-US0802 20 | ©...

  • Page 21: Pvmr, Friction Detent

    Technical Information PVG 32 Proportional Valve Group Function PVMR, friction detent The friction detent PVMR allows the directional spool to PVMR, friction detent be held in any position, resulting in infinitely variable, reversible, pressure compensated flow. This can be sustained indefinitely without having to continue to hold the mechanical lever.

  • Page 22: Pvbs, Main Spools For Pressure Control

    Technical Information PVG 32 Proportional Valve Group Function In a few systems load sensing pump pressure may result in unstable adjustment of the oil flow and a tendency towards system hunting. This may be the case with working functions that have a large moment of inertia or over-center valves. In such systems main spools for pressure control can be advantageous.

  • Page 23: Application

    Technical Information PVG 32 Proportional Valve Group Function Fig. 4 Flow controlled spool Fig. 5 Pressure controlled spool P005 625 P005 626 The opening area of the variable orifice is at maximum at Pump pressure vs. spool travel curve 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 24: Limitation

    Technical Information PVG 32 Proportional Valve Group Function pressure limitation can be used. It will appear from the characteristics enclosed what effect a pressure limitation, P will have on max. flow on the lowering port. The size for a "full" pressure control spool is determined on basis of known load pressure, P max, and requested max.

  • Page 25: Pvg 32 Technical Data

    Intermittent pressure at max. 250,000 cycles of full PVG life time cycles, with PVSI end plate. The maximum intermittent pressure at max. 250,000 cycles stresses the need to confirm application duty cycle before proceeding with specification. For further information contact Danfoss Product Application Engineering.

  • Page 26: Pvh, Hydraulic Actuation

    ±13.4° Proportional control lever range 22.3° Control lever range – float position For further information about PVE please see the Technical Information PVE, Series 4 for PVG 32/100/120 , 520L0553. PVE, electrical actuation Technical data for PVEO and PVEM 12 V...
  • Page 27 Technical Information PVG 32 Proportional Valve Group PVG 32 technical data Technical data for PVEA, PVEH and PVES 11 V to 32 V Supply voltage U rated 11 V to 32 V range max. ripple PVEH/PVES (PVEA) 0.57 (33) A @ 12 V 0.3 (17) A @ 24 V...
  • Page 28 Technical Information PVG 32 Proportional Valve Group PVG 32 technical data Reaction time for PVEA, PVEH and PVES (continued) Supply voltage Function PVEA PVEH PVES Prop. fine Prop. high Prop. super Disconnected by means Reaction time from max. spool max.

  • Page 29: Pvpx, Electrical Ls Unloading Valve

    Technical Information PVG 32 Proportional Valve Group PVG 32 technical data Fluids parameters Oil viscosity recommended range 12 - 75 mm²/s [65 - 347 SUS] minimum 4 mm²/s [39 SUS] maximum 460 mm²/s [2128 SUS] Oil temperature recommended range 30 - 60˚C [86 -140˚F]...

  • Page 30: Electrical Actuation

    V310072.B A detailed description of the variants is presented in: PVE-Series 4 for PVG 32, PVG 100 and PVG 120 Technical Information, 520L0553, covers all analogue PVE – PVEO, PVEH, PVES, PVEA, PVEM, PVEU, PVEP and the current controlled PVHC.

  • Page 31: Closed Loop Control

    Technical Information PVG 32 Proportional Valve Group Electrical actuation PVE characteristic - control by voltage PVEP control range PVEU 2.5V 7.5V fixed Closed loop control The PVE variants PVEA/H/M/S/U/P and the PVED-CC/-CX has a closed loop control supported by a spool position sensor that ensures integrity towards flow forces and oil viscosity.

  • Page 32: Pveo

    Technical Information PVG 32 Proportional Valve Group Electrical actuation Fault monitoring overview † Type Fault Delay before error Error mode Error output Fault output LED light Memory monitoring status on PVE PVEO No fault monitoring PVEM PVEA Active 500 ms No fault <...

  • Page 33: Pvea, Pveh, Pves, Pveu

    Technical Information PVG 32 Proportional Valve Group Electrical actuation PVEA, PVEH, PVES, PVEU Variants: Power supply: 11→ 32 V • -F for float in B-direction Connectors: • max. flow B at 4.8 mm • • DIN/Hirshmann -F for float in A-direction •...

  • Page 34: Pvhc

    Technical Information PVG 32 Proportional Valve Group Electrical actuation Power supply: 11 → 32 V PVE with Deutsch ® connector incl. female connector Connectors: • Deutsch ® (PVED-CC) • AMP (PVED-CC and PVED-CX) For more information on PVED please see the PVED-CC, Series 4 Technical Information, 520L0665.
  • Page 35 Technical Information PVG 32 Proportional Valve Group Electrical actuation PVHC characteristic - Spool stroke vs current Spool stroke, mm Ideal curve Hysteresis Current in mA @ 12V @ 24V 500/1000 mA 280/560 mA 280/560 mA 500/1000 mA V310 000.A PVHC current response and hysteresis @ 25 bar Pp, 21 ctS, 25 °C. The ideal curve is determined by the main spool neutral spring.

  • Page 36: Technical Characteristics

    Technical Information PVG 32 Proportional Valve Group Technical characteristics General The characteristics in this catalog are typical measured values. During measuring a mineral based hydraulic oil with a viscosity of 21 mm2/s [102 SUS] at a temperature of 50°C [122°F] was used.

  • Page 37: Pressure-Compensated Pvb, Open Center Pvp

    Technical Information PVG 32 Proportional Valve Group Technical characteristics • type of basic module (with/without compensation) • type of pump (fixed or variable displacement). Linear oil flow depending on spool type = Signal voltage; U = Supply voltage; 1 = First PVB after PVP; 8 = Eighth PVB after Pressure-compensated PVB, open center PVP The oil flow is dependent on the supplied pump oil flow.

  • Page 38: Pvb Without Pressure Compensation, Open Center Pvp

    Technical Information PVG 32 Proportional Valve Group Technical characteristics Progressive oil flow characteristic depending on spool type PWM for PVEP/T control range 157-61.im = Signal voltage; U = Supply voltage; 1 = First PVB after PVP; 8 = Eighth PVB after...

  • Page 39: Pvb Without Pressure Compensation, Closed Center Pvp

    Technical Information PVG 32 Proportional Valve Group Technical characteristics The pressure drop of any oil flowing back to tank (Q ) is read on the curve for neutral flow pressure in PVP. Characteristic for fully displaced flow control spools PVB without pressure compensation, closed center PVP Set pressure difference between pump pressure and LS signal = 10 bar [145 psi].
  • Page 40 Technical Information PVG 32 Proportional Valve Group Technical characteristics Set pressure difference between pump pressure and LS signal = 20 bar [290 psi]. The oil flow is dependent on the pressure difference between the pump pressure and the LS signal.

  • Page 41: 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 42: Examples Of How To Use The Characteristics For Pressure Control Spools

    Technical Information PVG 32 Proportional Valve Group Technical characteristics Size C: Size D: Example 2 Size E: Examples of how to use the characteristics for pressure control spools Example 1: Determining the oil flow Example 2: Determining the spool size...

  • Page 43: 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 44 Technical Information PVG 32 Proportional Valve Group Technical characteristics Pressure drop A/B → T in float position 520L0344 | BC00000038en-US0802 44 | © Danfoss | August 2017...

  • Page 45: 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 520L0344 | BC00000038en-US0802 | 45 © Danfoss | August 2017...

  • Page 46: 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) 520L0344 | BC00000038en-US0802 46 | ©...

  • Page 47: Other Operating Conditions

    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 48 Internal filters The filters built into PVG 32 are not intended to filter the system but to protect important components against large particles. Such particles can appear in the system as a result of pump damage, hose fracture, use of quick-couplings, filter damage, starting up, contamination, etc.

  • Page 49: Dimensions

    Technical Information PVG 32 Proportional Valve Group Dimensions PVG 32 Dimensions Legend: F: Shock and suction valve, PVLP M: LX connection: PVS; G ∕ , 10 mm [ ∕ –24; 0.39 in] deep G: Pressure gauge connection: G¼, 12 mm [½ –20, 0.47 in] deep PVSI;...

  • Page 50: Pvm, Control Lever Positions

    Technical Information PVG 32 Proportional Valve Group Dimensions 49.5[1.949] 33[1.30] 110[4.33] 60[2.36] max.200.5[7.894] 17[0.67] 85.5[3.366] PVEO 107[4.21] 110[4.33] 60[2.36] max.290.50[11.437] 89.5[3.524] PVEM/PVEH/ PVES 107[4.21] 110[4.33] 60[2.36] max.290.50[11.437] V310141.A F : G ¼, 12 mm deep [½ in - 20, 0.47 in deep] PVM, control lever positions Base with an angle of 37.5°...

  • Page 51: Surface Treatment

    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 52: Modules Symbols, Description And Code Numbers

    Technical Information PVG 32 Proportional Valve Group Modules symbols, description and code numbers PVP, pump side modules Symbol Description Code number Open center pump side module for pumps P = G ½ 157B5000 with fixed displacement. T = G ¾...
  • Page 53 Technical Information PVG 32 Proportional Valve Group Modules symbols, description and code numbers PVP, pump side modules Symbol Description Code number Open center pump side module for pumps with fixed P, T = G ¾ 157B5102 displacement. For mechanical actuated valves.

  • Page 54: Pvb, Basic Modules

    Technical Information PVG 32 Proportional Valve Group Modules symbols, description and code numbers PVB, basic modules PVB, basic modules – without adjustable LS pressure limiting valves Symbol Description Code number No facilities for Facilities for shock shock valves A/B valves A/B Without load drop check valve and G ½...
  • Page 55 Technical Information PVG 32 Proportional Valve Group Modules symbols, description and code numbers PVB, basic modules – without adjustable LS pressure limiting valves (continued) Symbol Description Code number No facilities for Facilities for shock shock valves A/B valves A/B With damped compensator valve G ½...

  • Page 56: Pvla, Suction Valve (Fitted In Pvb)

    Technical Information PVG 32 Proportional Valve Group Modules symbols, 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 57: Pvm, Mechanical Actuation

    Technical Information PVG 32 Proportional Valve Group Modules symbols, description and code numbers PVM, mechanical actuation PVM, mechanical actuation Symbol Description Code number with stop screws w/o stop screws PVM, Standard, spring centered 157B3171 157B3191 Individual oil flow adjustment to ports A and B Without actuation lever and base.

  • Page 58: Pvh, Hydraulic Actuation

    Technical Information PVG 32 Proportional Valve Group Modules symbols, description and code numbers PVH, hydraulic actuation PVH, hydraulic actuation Symbol Description Material Code number Anodized PVH, Cover for Hydraulic actuation aluminium 157B0007 PVH 9/16-18 UNF aluminium 157B0010 cast iron 157B0014...

  • Page 59: Pvpc, Plug For External Pilot Oil Supply

    Technical Information PVG 32 Proportional Valve Group Modules symbols, description and code numbers PVPX, electrical LS unloaded valve (continued) Symbol Description Code number PVPX, Normally closed: 12 V 157B4246 LS pressure relieved with signal to PVPX 24 V 157B4248 PVPX, Normally open with manual override:...

  • Page 60: Module Selection Chart

    Technical Information PVG 32 Proportional Valve Group Module selection chart Standard FC spools 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. compensated flow l/min [US gal/min] 5 [1.3]...

  • Page 61: Standard Fc Spools, Hydraulic Actuation

    Technical Information PVG 32 Proportional Valve Group Module selection chart 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 62: Fc Spools For Friction Detent, Pvmr

    Technical Information PVG 32 Proportional Valve Group Module selection chart PVB is with LS shuttle valve Code number 157B..PVB is without LS shuttle valve 9824 9823 9822 9821 9820 9825 157-454.10 4-way, 4 position Closed neutral position P → A → F...

  • Page 63: Standard Pc Spools

    Technical Information PVG 32 Proportional Valve Group Module selection chart PVB is with LS shuttle valve Code number 157B..PVB is without LS shuttle valve 9784 9783 9782 9781 9760 9761 9762 9763 9764 157-03.11 4-way, 3-position Throttled, open neutral position 9794 4-way, 3-position Throttled, A →...

  • Page 64: Standard Pc Spools, Hydraulic Actuation

    Technical Information PVG 32 Proportional Valve Group Module selection chart PVB is with LS shuttle valve Code number 157B..PVB is without LS shuttle valve 7074 7073 7072 7071 7050 7051 7052 7053 7054 4-way, 3-position Closed neutral position, PC → B...

  • Page 65: Pvb, Basic Valves

    Technical Information PVG 32 Proportional Valve Group Module selection chart PVB is with LS shuttle valve Code number 157B..PVB is without LS shuttle valve 9042 9043 9044 4-way, 3-position Closed neutral position, PC → A 9052 9053 9054 4-way, 3-position Closed neutral position, PC →...

  • Page 66: Pvp, Pump Side Module

    Technical Information PVG 32 Proportional Valve Group Module selection chart PVB, basic valves (continued) Description No facilities for shock valves A and B Facilities for shock valves A and B G ½ 7∕8 - 14 UNF G ½ 7∕8 - 14 UNF...
  • Page 67 Technical Information PVG 32 Proportional Valve Group Module selection chart PVP, pump side module (continued) Description Without pilot supply With pilot supply for PVE for PVE with for PVE for PVE and for PVE and pilot for PVH and pilot facilit.

  • Page 68: Pve, Electrical Actuation

    Technical Information PVG 32 Proportional Valve Group Module selection chart PVE, electrical actuation PVE, electrical actuation Description Code No. Weight kg [lb] Hirsch Deut. PVEO, on-off 12 V 157B4216 157B4901 157B4291 0.6 [1.3] 24 V 157B4228 157B4902 157B4292 PVEO-R, on/off...
  • Page 69 Technical Information PVG 32 Proportional Valve Group Module selection chart PVLA, anti-cavitation valve Description Code No. Weight [lb] Plug A or B 157B2002 0.04 [0.09] Valve A or B 157B2001 0.05 [0.10] 520L0344 | BC00000038en-US0802 | 69 © Danfoss | August 2017...

  • Page 70: Order Specification

    PVMD, PVE or PVH in field 'a'. 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 71 Technical Information PVG 32 Proportional Valve Group Order specification The figures in the table have been calculated according to the following expressions: • PVLP ≤150 bar: LS ≤ 0.8 × P PVLP • PVLP >150 bar: P - LS ≥ 30 bar.

  • Page 72: Pvg 32 Specification Sheet

    Technical Information PVG 32 Proportional Valve Group Order specification PVG 32 specification sheet 520L0344 | BC00000038en-US0802 72 | © Danfoss | August 2017...
  • Page 73 Technical Information PVG 32 Proportional Valve Group 520L0344 | BC00000038en-US0802 | 73 © Danfoss | August 2017...
  • Page 74 Technical Information PVG 32 Proportional Valve Group 520L0344 | BC00000038en-US0802 74 | © Danfoss | August 2017...
  • Page 75 Technical Information PVG 32 Proportional Valve Group 520L0344 | BC00000038en-US0802 | 75 © Danfoss | August 2017...
  • Page 76 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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