Product Overview
RELIEF
Description
Ventable, pilot-operated, balanced piston relief cartridges are normally closed pressure regulating valves. When the pressure at the inlet (port 1) reaches the valve setting, the valve starts to open to tank (port 2), throttling flow to regulate the pressure. They provide a vent port (port 3) that connects between the main piston and pilot stage to provide for remote control by other pilot or 2-way valves. These valves are accurate, have low pressure rise vs. flow, they are smooth and quiet, and are moderately fast.
Specifications
Cavity T-17A
Series 3
Capacity 60 gpm
Maximum Operating Pressure 5000 psi
Factory Pressure Settings Established at 4 gpm
Control Pilot Flow 15 - 20 in³/min.
Maximum Valve Leakage at 110 SUS (24 cSt) 4 in³/min.@1000 psi
Response Time - Typical 10 ms
Adjustment - No. of CW Turns from Min. to Max. setting 5
Valve Hex Size 1 1/4 in.
Valve Installation Torque 150 - 160 lbf ft
Adjustment Screw Internal Hex Size 5/32 in.
Locknut Hex Size 9/16 in.
Locknut Torque 80 - 90 lbf in.
Model Weight 1.36 lb.
Seal kit - Cartridge Buna: 990017007
Seal kit - Cartridge EPDM: 990017014
Seal kit - Cartridge Polyurethane: 990017002
Seal kit - Cartridge Viton: 990017006
Features
A remote pilot relief on port 3 (vent) will control the valve below its own setting.
Will accept maximum pressure at port 2; suitable for use in cross port relief circuits. If used in cross port relief circuits, consider spool leakage.
Main stage orifice is protected by a 150-micron stainless steel screen.
Not suitable for use in load holding applications due to spool leakage.
Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.
Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
*Please note that image representation may only represent a product series with particular items. The buyers responsibility is to ensure the product SKU matches their specifications before purchase.
