Model: RPIT
Anti-Shock, pilot-operated, balanced poppet relief valve
Cavity: T-16A | Capacity:
Technical specifications
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. The adjust screw determines the maximum (relief) setting and the minimum (threshold) setting.
- All 2-port relief cartridges (except pilot reliefs) are physically and functionally interchangeable (same flow path, same cavity for a given frame size).
- Will accept maximum pressure at port 2; suitable for use in cross port relief circuits.
- 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 pumps and motors from pressure transients due to sudden load changes, especially variable displacement pumps, since the displacement mechanism is sometimes too slow to catch these pressure transients.
- 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.
- 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
- Capacity100 gpm
- Maximum Operating Pressure5000 psi
- Control Pilot Flow10 - 25 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 Weight1.00 lb
- Seal kit - Cartridge
- Seal kit - Cartridge
- U.S. Patent #6,039,070
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- Patents: US#6,039,070; Germany EP 1 001 197; Japan #3,119,230
- Patents: US#6,039,070; Germany EP 1 001 197; Japan #3,119,230
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