Bosch Rexroth | SV30PA2-4XV
SV30PA2-4X/V
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The SV30PA2-4X/V valve is manufactured by Bosch Rexroth and belongs to the Hy-Check Valves series; it is intended to hold hydraulic cylinders or motors in position until a pilot signal releases the block. Nominal size NG32 defines the flow passage and aligns the unit with large-capacity manifolds. A subplate mounting connection allows direct installation on a base plate, eliminating threaded ports and shortening service time. The ISO 5781-09-13-0-16 porting pattern matches standardized cavity layouts so that plates from different suppliers can be used. Control areas A1 of 5.72 cm² and A2 of 1.33 cm² establish the pilot ratio that governs how much auxiliary pressure is required to unseat the poppet. A pre-opening feature is provided, letting a small amount of oil bypass early to dampen pressure surges. The valve begins to open at a cracking pressure of 5.0 bar and can pass up to 550 l/min once fully open, supporting rapid actuator movement in high-flow circuits.
Additional internal flow paths are characterized by control area A3 of 16.61 cm² and control area A4 of 1.54 cm², figures that fine-tune the balance of forces on the poppet during reverse flow. Pilot Volume Port X holds 19.27 cm³ of oil, giving design engineers the data needed to size pilot lines for swift response. Pilot oil returns inside the valve body, so no external drain line is required. The assembly withstands operating pressures up to 315 bar without fatigue, making it suitable for heavy industrial presses and mobile machinery alike. FKM seals resist high temperature hydraulic fluids and most synthetic blends. The valve can be installed in any orientation, providing layout flexibility when space is limited. A subplate weight of 7.8 kg aids stable mounting while keeping handling manageable for a single technician.
Technical Specifications
Connection Type
Subplate Mounting
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
Installation Position
Any
Max Operating Pressure
315 bar
Maximum Flow
550 l/min
Nominal Size
NG32
Pilot Oil Return
Internal
Pilot Volume Port X
19.27 cm³
Porting Pattern
ISO 5781-09-13-0-16
Pre-opening
Yes
Seal Material
FKM
Weight (subplate)
7.8 kg
1620 Old Apex Road
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