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SUN HYDRAULICS CORP
PSJTXFN
Pressure Control
Cartridge
$638.20
SUN HYDRAULICS CORP
MATERIAL: PSJTXFN
SUMMARY: Cartridge
Quantity in stock: 0
The direct-acting reducer/reliever main section is meant to act as an interface between a low flow pressure source at port 4 and a circuit with higher flow requirements. The valve will reduce a high primary pressure at the inlet (port 2) to a reduced pressure at port 1, with a full-flow relief function from port 1 to tank (port 3). The valve incorporates a damped construction for stable operation allowing the use of high reduced pressure.
- The valve is biased to the relieving mode with a 100 psi (7 bar) spring. Once this threshold is exceeded, pressure at port 4 is directly added to the pressure at port 1 of the valve. For example, 1000 psi (70 bar) at port 4 will result in a pressure reading of 900 psi (63 bar) at port 1.
- Maximum pressure at port 3 should be limited to 3000 psi (210 bar).
- Suitable for accumulator circuits since the absence of pilot control flow results in reduced secondary circuit leakage.
- Direct acting concept provides highly reliable operation in contaminated systems, especially at dead headed conditions.
- Direct operated version offers superior dynamic response compared to equivalent pilot operated models.
- Leakage specified in Technical Data is out of port 3 with a supply pressure of 2000 psi (140 bar) and the valve set at mid range. This leakage is directly proportional to pressure differential and inversely proportional to viscosity expressed in centistokes.
- Valve is tested for correct operation with 5000 psi (350 bar) inlet pressure.
- Pressure on the drain (port 4) is directly additive to the pressure at port 1 at a 1:1 ratio and should not exceed 5000 psi (350 bar).
- 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.
- Full reverse flow from reduced pressure (port 1) to inlet (port 2) may cause the main spool to close. If reverse free flow is required in the circuit, consider adding a separate check valve to the circuit.
- 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 | T-24A |
Series | 4 |
Capacity | 80 gpm320 L/min. |
Maximum Operating Pressure | 5000 psi350 bar |
Maximum Valve Leakage at 110 SUS (24 cSt) | 4 in³/min.@1000 psi65 cc/min.@70 bar |
Valve Hex Size | 1 5/8 in.41,3 mm |
Valve Installation Torque | 350 - 375 lbf ft474 - 508 Nm |
Model Weight | 3.10 lb1,40 kg |
Seal kit - Cartridge | Viton: 990-024-006 |
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Additional Resources
- Sun Expands Corrosion-Resistant Solutions
- Series 4 PLUS Cartridges Offer Higher Flows with Lower Pressure Losses
- Sun Offers Zinc-Nickel Plating for Corrosion Resistance
- Sun Cartridges with EPDM Seals
- QuickDesign with SmartConnect Offers Drag-and-Drop Schematic Tool
- Reducing and Reducing/Relieving Valves
- Manufacturing Sun Cartridge Cavities
- Fluid and Temperature Recommendations
- Performance Data
- Sun's Floating Style Screw-In Cartridge
- Units of Measure, Settings, and Conversions
- Sun Model Code Explanation; 999-901-334
- Cavity Information (S-171) and Tooling
- Cartridges: Materials of Construction