Oilgear Pump Controls PVWJ, PVG, and PVV

3-way Style (PVWW/PVWJ) Pump Controls 3-way Style (PVWW/PVWJ) Typically used in circuits where fast response times are not necessary.

3- way Control Circuit

3- way Pressure vs Volume

3-way Style (PVWW, PVWJ) 4-way Style (PVG, PVV) Pump Controls Typically used in circuits where fast response times are not necessary. 4-way Style (PVG, PVV) Typically used in circuits where fast response is critical.

4- way Control Circuit OP-2

4- way Pressure vs Volume

PVWJ Controls

3-way Style Controls PVWJ P-1NN, P-LNN Single Pressure Compensator P-1NN/F Load Sense Compensator (PVWJ) P-CNN, P-KNN Soft start Compensator HP Horsepower Limiter G Horsepower limiter with load sense

PVWJ P-1NN Control Access for lifting eye Pressure adj. Screw RP Port

3-Way - P-1NN or P-LNN P-1NN or P-LNN CN Control CN Control

Full Stroke Optional Minimum Volume Stop Pressure Compensator Adjustment Spool Drain Plug 361 Maximum Volume Stop

Zero “Slip Stroke” Optional Minimum Volume Stop Pressure Compensator Adjustment Spool Drain Plug 361 Maximum Volume Stop

P-LNN We offer a low pressure version of the PVWJ pump. The designator for this control is P-LNN. This control will allow the pump to go to a minimum compensator setting of approximately 150 psi. The pumps maximum pressure limit is 1500 psi.

Control Stability Orifice P-1NN and P-LNN Control Stability Orifice Compensator spool

P-1NN or P-LNN Port Locations Compensator Inlet Compensator Spool Drain Control Spring Drain Compensator Spring Drain

Changes in the Control The PVWJ-P-1 pressure compensating control is functionally the same as the previous PVWH-CN control with improvements to the control to; increase stability, reduce control generated noise, and ease of field adjustment. Some of these changes are: New dampened compensator spool

PVWJ Control Changes New Compensator Spool PVWJ PVWH

Changes in the Control The PVWJ-P-1 pressure compensating control is functionally the same as the previous PVWH-CN control with improvements to the control to; increase stability, reduce control generated noise, and ease of field adjustment. Some of these changes are: New dampened compensator spool Dual compensator springs

PVWJ Control Changes Dual Compensator Springs

P-1NN or P-LNN New Spring Seat Dual Compensator Springs New Dampened Compensator Spool

Changes in the Control The PVWJ-P-1 pressure compensating control is functionally the same as the previous PVWH-CN control with improvements to the control to; increase stability, reduce control generated noise, and ease of field adjustment. Some of these changes are: New dampened compensator spool Dual compensator springs New compensator adjustment assembly

Spring Seat and O-ring Seal PVWJ Control Changes New Adjustment Assembly Shims are now used to increase the maximum pressure, instead of reducing pressure as in the PVWH series Spring Seat and O-ring Seal The screw that holds the adjustment shims, screws in to the pressure adjusting screw.

PVWH vs. PVWJ PVWJ PVWH

Changes in the Control The PVWJ-P-1 pressure compensating control is functionally the same as the previous PVWH-CN control with improvements to the control to; increase stability, reduce control generated noise, and ease of field adjustment. Some of these changes are: New dampened compensator spool Dual compensator springs New compensator adjustment assembly New control housing NO GASKETS!!

PVWJ As you can see in the photo on the right, the pump housing has been machined to accept an o-ring to seal the case. The compensator inlet o-ring has been relocated to pump housing

PVWJ Control Orifices Standard Control Stability Orifice Sizes PVWJ-011/014/022 .040” (1,016 mm) PVWJ-025/034/046 .040” (1,016 mm) PVWJ-064/076/098/130 .050” (1,27 mm) All standard orifices are drilled 10-24 X ¼” hollow hex set screws.

Control Piston Orifice

P-1NN/F, and P-LNN/F

P-1NN/F, and P-LNN/F RP1 Port Load Sense Port Max. Volume Stop

P-1NN/FNN, or P-LNN/FNN

Compensator Spring Drain P-1NN/FNN What’s Missing? Compensator Inlet Compensator Spring Drain

P-1NN/FNN What’s Missing? Besides the control piston! Compensator Inlet Compensator Spring Drain

Compensator Spring Drain P-1NN/FNN What’s Missing? Compensator Inlet Compensator Spring Drain The spool drain!

P-1NN/F and P-LNN/F In all P-1NN/F, P-LNN/F, P-C**, and P-K** controls the spool drains are not drilled. P-1NN P-1NN/F

P-1NN/FNN vs P-1NN/FSN The pictures to the right show an “A” frame PVWJ without a maximum volume stop, and a P-1NN/FSN control with a maximum stop. Unlike the PVWH, the PVWJ incorporates a transition block which allows the LS module to be rotated 90° to facilitate a maximum stop. This eliminates the need to relocate the module to the top of the control housing. Adjustable LS Option Fixed LS Option

P-1NN/F Options for the PVWJ load sense modules: F = Fixed D P 170 psi J = Adjustable D P 100-220 psi K = Adjustable D P 225-350 psi Fixed module is shown

Remote Compensating PVWJ Pumps using Adjustable Load Sense Controls PVWJ Pumps w/P-1NN/F-ADJ* Control .030” orifice System Header Remote Relief Valve Remote Compensating PVWJ Pumps using Adjustable Load Sense Controls

Primarily used on mobile equipment to help minimize wasted horsepower. Load Sense Control Primarily used on mobile equipment to help minimize wasted horsepower. Allows the pump maintain a constant flow regardless of pressure, within ± 5%. Helps minimize heat generated in the system. By maintaining a constant DP across a customer supplied restriction, i.e. flow control, proportional valve, etc.

2 Speed Motor Circuit - Fixed Volume 34 gpm 1500 psi 3000 psi 15 gpm HP Required @ 34 GPM = 35.00 HP Required @ 15 GPM = 70.00 34 gpm Why is the horsepower double @ 15 GPM 2 Speed Motor Circuit - Fixed Volume

2 Speed Motor Circuit - Pressure Compensated 34 gpm 1500 psi 3200 psi 15 gpm HP Required @ 34 GPM = 35.00 hp HP Required @ 15 GPM = 31.00 hp 34 gpm HP Saving Over Fixed Pump @ 15 GPM = 39.00 hp 34 GPM 3000 psi 2 Speed Motor Circuit - Pressure Compensated

2 Speed Motor Circuit - Load Sense 34 gpm 1500 psi 3200 psi 1500 psi Working Pressure 15 gpm 1670 PSI 3000 psi L P 170 .020 Bleed Orifice HP HP Required @ 34 GPM = 35.00 hp HP Required @ 15 GPM = 18.00 hp 2 Speed Motor Circuit - Load Sense HP Savings L.S. vs. Fixed = 52.00 hp HP Savings L.S. vs. P Comp. = 14.00 hp

Why Use a Load Sense over a Pressure Compensated Control? Cost Stability Ability to remote compensate more than a single pump.

P-C** or P-K** Soft Start

P-C** or P-K** Soft Start

P-K**

Why is this control a P-K**?

Why is this control a P-K**? N.C. Two-Way Valve Why is this control a P-K**?

PVG/PVV Controls

Pumps that use a 4-way style control 4-way Style Controls Pumps that use a 4-way style control

Pumps that use a 4-way style control 4-way Style Controls Pumps that use a 4-way style control PVG

Pumps that use a 4-way style control 4-way Style Controls Pumps that use a 4-way style control PVG PVV

P-1NN Single Pressure Compensator P-2NN Dual Pressure Compensator 4-way Style Controls P-1NN Single Pressure Compensator P-2NN Dual Pressure Compensator P-A** N.O Proportional Pressure Compensator P-B** N.C. Proportional pressure Compensator P-C** Single Pressure w/ No Load Starting

P-1NN/F Single Pressure w/ Load Sense 4-way Style Controls P-1NN/F Single Pressure w/ Load Sense P-1NN/H Single Pressure w/ Horsepower Limiting P-1NN/G Single Pressure w/ HP Limiting & Load Sense P-1NN/K Single Pressure w/ Load Sense Plus

P-1NN 4-way Pressure Control Features included in these style of controls Easily Remotely Compensated Critical Orifice Ports tapped for orifice plugs.

P-1NN Compensator Remote Port 1 GPA OP3 OP4 OP14 OP2 OP6

P-1NN 4-way Pressure Control Typically this control is used where very fast response is required. Response times of 45-55 milliseconds (PVG) Set works in sawmills

Full Stroke

Compensated “Slip Stroke”

Orifice Locations OP-6 OP-5 OP-1 OP-2 OP-14 OP-3 OP-4 OP-10

OP 14 OP 1

Remote Compensating a Single PVG

P-1NN/F Load Sense Control Customer Supplied OP2 OP14

Remote Compensating Multiple 4 way Style Pump Controls To System

P-1NN/F Load Sense Control

P-1NN/F Load Sense Plus LS OP15 Customer Supplied A GPA RP1 OP8 OP3 B

Compensator Adjustment Stand-by Adjustment Delta P Adjustment

P-2NN Dual Pressure Control

High Pressure Adjustment P-2NN Compensator - Full Stroke High Pressure Adjustment Solenoid Selector Low Pressure Adjustment

P-C NN Soft Start Control

Unloading Solenoid Valve

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