Bosch Rexroth | SV30PA1-4XV
SV30PA1-4X/V
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The SV30PA1-4X/V valve belongs to the Hy-Check Valves series from Bosch Rexroth and is intended to block or release flow in hydraulic automation circuits. It is supplied in nominal size 32, allowing it to handle large volume flows in medium to high power systems. A cracking pressure of 2.5 bar ensures the poppet opens only after a defined upstream pressure is reached, preventing unintended backflow during standby. The unit withstands operating pressures up to 315 bar, so it can be installed in high-pressure manifolds without derating. A minimum pilot pressure of 5 bar is required to shift the element, providing positive actuation when the control line is energized. The control area A1 is 5.72 cm², which establishes the pilot force needed to overcome spring load. Pilot volume at port X is 19.27 cm³, influencing response time when long pilot lines are present. The interface uses the ISO 5781-09-13-0-16 porting pattern, and subplate mounting simplifies replacement during maintenance.
The SV30PA1-4X/V weighs 7.8 kg, so a single technician can install it with standard lifting aids. Sealing elements are made of FKM, giving chemical resistance to common hydraulic oils and compatibility with elevated temperatures. Fluid temperatures can range from −15 °C to +80 °C, letting the valve operate in cold starts and warm continuous duty. The permitted viscosity window extends from 2.8 mm²/s to 500 mm²/s, covering both low-viscosity fluids and thicker oils used for wear reduction. System cleanliness must be maintained at ISO 4406 code 20/18/15 to prevent silting of the poppet and seat. Pilot lines may be pressurized up to 315 bar, keeping the control circuit consistent with the main pressure rating. These limits define application envelopes for machinery such as presses or injection units that rely on dependable check function under variable temperature, pressure, and oil condition.
Technical Specifications
Cleanliness Class (iso 4406)
20/18/15
Control Area A1
5.72 cm²
Cracking Pressure
2.5 bar
Max Fluid Temp (fkm)
+80 °C
Max Operating Pressure (p)
315 bar
Max Pilot Pressure (p)
315 bar
Max Viscosity
500 mm²/s
Min Fluid Temp (fkm)
−15 °C
Min Pilot Pressure (p)
5 bar
Min Viscosity
2.8 mm²/s
Nominal Size
32
Pilot Volume Port X
19.27 cm³
Porting Pattern
ISO 5781-09-13-0-16
Seal Material
FKM
Type Of Connection
Subplate Mounting
Weight (p)
7.8 kg
1620 Old Apex Road
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