SUN HYDRAULICS
PRHBCAN/AP
- SUN HYDRAULICS
- Material:PRHBCAN/AP
- Model:PRHB-CAN/AP
- Summary:Cartridge
Due to extremely high demand, please call 888-905-7411 for availability
***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Sun Hydraulics directly.***
The Sun Hydraulics PRHBCAN/AP (Material Number: PRHBCAN/AP) is a direct-acting, pressure-reducing and relieving valve designed to maintain a constant reduced pressure at port 1 from a higher primary pressure at inlet port 2. It features a full-flow relief function from port 1 to tank port 3, ensuring stable operation even under high reduced pressure conditions. The valve's damped construction enhances stability, making it suitable for accumulator circuits by reducing secondary circuit leakage due to the absence of pilot control flow. Pressure at port 3 is additive to the valve setting at a 1:1 ratio and should not exceed 3000 psi (210 bar). This model incorporates EPDM seals compatible with systems using phosphate ester fluids, though exposure to petroleum-based fluids can damage these seals. The PRHBCAN/AP model is physically interchangeable with other three-port pressure-reducing and relieving cartridges of the same frame size, offering flexibility in mounting configurations. For circuits requiring reverse free flow from reduced pressure port 1 to inlet port 2, it is recommended to add a separate check valve as the main spool may close. The direct-acting design provides reliable operation in contaminated systems and superior dynamic response compared to pilot-operated models. It also incorporates Sun's floating style construction to minimize internal part binding due to excessive installation torque or machining variations. With a capacity of up to 40 gpm (160 L/min) and maximum operating pressure of 5000 psi (350 bar), this cartridge valve ensures minimal leakage and reliable performance across various applications. The adjustment mechanism allows for precise control with up to five clockwise turns for setting increases, ensuring optimal operation within specified tolerances.
The Sun Hydraulics PRHBCAN/AP (Material Number: PRHBCAN/AP) is a direct-acting, pressure-reducing and relieving valve designed to maintain a constant reduced pressure at port 1 from a higher primary pressure at inlet port 2. It features a full-flow relief function from port 1 to tank port 3, ensuring stable operation even under high reduced pressure conditions. The valve's damped construction enhances stability, making it suitable for accumulator circuits by reducing secondary circuit leakage due to the absence of pilot control flow. Pressure at port 3 is additive to the valve setting at a 1:1 ratio and should not exceed 3000 psi (210 bar). This model incorporates EPDM seals compatible with systems using phosphate ester fluids, though exposure to petroleum-based fluids can damage these seals. The PRHBCAN/AP model is physically interchangeable with other three-port pressure-reducing and relieving cartridges of the same frame size, offering flexibility in mounting configurations. For circuits requiring reverse free flow from reduced pressure port 1 to inlet port 2, it is recommended to add a separate check valve as the main spool may close. The direct-acting design provides reliable operation in contaminated systems and superior dynamic response compared to pilot-operated models. It also incorporates Sun's floating style construction to minimize internal part binding due to excessive installation torque or machining variations. With a capacity of up to 40 gpm (160 L/min) and maximum operating pressure of 5000 psi (350 bar), this cartridge valve ensures minimal leakage and reliable performance across various applications. The adjustment mechanism allows for precise control with up to five clockwise turns for setting increases, ensuring optimal operation within specified tolerances.
Direct-acting, pressure reducing/relieving valves reduce a high primary pressure at the inlet (port 2) to a constant reduced pressure at port 1, with a full-flow relief function from port 1 to tank (port 3). These valves incorporate a damped construction for stable operation allowing the use of high reduced pressure.
- Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 3000 psi (210 bar).
- 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.
- 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.
- All three-port pressure reducing and reducing/relieving cartridges are physically interchangeable (i.e. same flow path, same cavity for a given frame size). When considering mounting configurations, it is sometimes recommended that a full capacity return line (port 3) be used with reducing/relieving cartridges.
- 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.
- All spring ranges are tested for correct operation with 5000 psi (350 bar) inlet pressure.
- 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.
- Unlike pilot operated versions, direct acting valves exhibit a transitional step between reducing and relieving modes. This step equals 5% of the high end of the adjustment range, independent of the valve setting. Therefore, these valves may not be suitable for counterbalancing applications.
- Direct operated version offers superior dynamic response compared to equivalent pilot operated models.
- 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-17A |
Series | 3 |
Capacity | 40 gpm160 L/min. |
Factory Pressure Settings Established at | blocked control port (dead headed)blocked control port (dead headed) |
Maximum Operating Pressure | 5000 psi350 bar |
Maximum Valve Leakage at 110 SUS (24 cSt) | 4 in³/min.65 cc/min. |
Adjustment - Number of Clockwise Turns to Increase Setting | 55 |
Valve Hex Size | 1 1/4 in.31,8 mm |
Valve Installation Torque | 150 - 160 lbf ft203 - 217 Nm |
Adjustment Screw Internal Hex Size | 5/32 in.4 mm |
Locknut Hex Size | 9/16 in.15 mm |
Locknut Torque | 80 - 90 lbf in.9 - 10 Nm |
Model Weight | 1.50 lb0,70 kg |
Seal kit - Cartridge | Viton: 990-017-006 |
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