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Anti-Shock, ventable, pilot-operated, balanced poppet relief valve
Cavity: T-17A | Capacity:
See CAD Files tab below to request images.
Technical specifications
Ventable, pilot-operated, anti shock relief cartridges limit maximum system pressure and also limit the rate of pressure rise. The valve opens and then ramps closed at a constant speed, independent of settings and flows. These 3 port valves include a vent port (port 3) that connects between the main piston and the pilot stage to provide for remote control by other pilot or 2-way valves. The adjust screw determines the maximum (relief) setting and the minimum (threshold) setting.
- Because the modulating occurs inside the cartridge, these valves are immune to most of the problems associated with cavitation, namely noise and manifold erosion.
- Will accept maximum pressure at port 2; suitable for use in cross port relief circuits.
- A remote pilot relief on port 3 (vent) will control the valve below its own setting.
- Not suitable for use in load holding applications.
- When pressure at the inlet (port 1) exceeds the threshold setting, the valve opens to tank (port 2). The pilot section moves forward at a steady rate, increasing the setting by compressing the pilot spring. Maximum setting is achieved when the pilot section reaches a mechanical stop.
- Valve provides protection for hydrostatic drives by reducing the jerk caused by sudden reversals. The valve is suitable for cross-port applications.
- When used with a switching device, the valve can provide the ramp characteristic typically provided by proportional valves.
- Small power units can be started against an anti shock relief to provide longer pump life.
- Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.
- The main stage orifice is protected against contamination.
- Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.
- Cavity
- Series
- Capacity60 gpm
- Maximum Operating Pressure5000 psi
- Control Pilot Flow15 - 20 in³/min.
- Factory Pressure Settings Established at4 gpm
- Pressure Ramp Up Time300 - 500 ms
- Response Time - Typical2 ms
- Adjustment - No. of CW Turns from Min. to Max. setting4.5
- Valve Hex Size1 1/4 in.
- Valve Installation Torque150 - 160 lbf ft
- Adjustment Screw Internal Hex Size5/32 in.
- Locknut Hex Size9/16 in.
- Locknut Torque80 - 90 lbf in.
- Model Weight1.60 lb
- Seal kit - Cartridge
- Seal kit - Cartridge
- Seal kit - Cartridge
- U.S. Patent #6,039,070
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Direct acting or pilot operated - what do I use?
- Patents are pending for this product.
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