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The SV30PA2-4X/ valve belongs to the Hy-Check Valves series and is produced by Bosch Rexroth to hold or release hydraulic loads on command. The nominal size is 32 (NG32), matching manifold passages of that size for consistent flow paths. A subplate mounting connection simplifies installation because the body bolts directly to a standardized base. The porting pattern follows ISO 5781-09-13-0-16 so it aligns with common drilling templates. The unit weighs 7.8 kg, a consideration when selecting support hardware. A built-in pre-opening feature limits pressure shock by allowing a small bypass flow before the main poppet lifts. Control area A1 is 5.72 cm² and control area A2 is 1.33 cm²; these areas set the pressure ratio that determines pilot force requirements. Internal pilot oil return sends the pilot flow back through the body, removing the need for an external drain line.
Control area A3 measures 16.61 cm² to provide closing force under system pressure, while control area A4 of 1.54 cm² guides the final sealing motion. The cracking pressure is fixed at 5.0 bar so the valve begins to open once inlet pressure exceeds this value. A maximum flow rating of 550 l/min accommodates high-volume circuits without excessive loss. The assembly withstands operating pressures up to 315 bar for heavy-duty service. Pilot actuation must reach at least 5 bar and may rise to 315 bar, offering a wide control window for remote release. Pilot volume at port X is 19.27 cm³, defining the oil quantity displaced during each switching event and influencing response time.
Control Area A1
5.72 cm2
Control Area A2
1.33 cm2
Control Area A3
16.61 cm2
Control Area A4
1.54 cm2
Cracking Pressure
5.0 bar
Maximum Flow
550 l/min
Maximum Operating Pressure
315 bar
Maximum Pilot Pressure
315 bar
Minimum Pilot Pressure
5 bar
Nominal Size
32 (NG32)
Pilot Oil Return
Internal
Pilot Volume (port X)
19.27 cm3
Porting Pattern
ISO 5781-09-13-0-16
Pre-opening
With Pre-Opening
Type Of Connection
Subplate Mounting
Weight
7.8 kg
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