Bosch Rexroth | SL30PA2-4X
SL30PA2-4X/
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The SL30PA2-4X/ check valve belongs to the Hy-Check Valves series from Bosch Rexroth and is intended to block or release flow in hydraulic automation circuits. It fits nominal size 32 interfaces and uses subplate mounting, which simplifies installation and maintenance. The porting pattern ISO 5781-09-13-0-16 aligns the valve with standard manifolds. Control area A1 is 5.72 cm² and control area A2 is 1.33 cm²; these surfaces define the hydraulic force required to shift the poppet. A pre-opening feature is present to soften pressure spikes during initial flow. The valve remains sealed until system pressure reaches the 5.0 bar cracking threshold. To avoid wear, hydraulic fluid must be cleaner than ISO 4406 class 20/18/15.
The valve supports a maximum flow of 550 l/min so it can serve high-volume circuits. Its housing withstands operating pressures up to 315 bar, and the pilot stage is rated for the same 315 bar while needing at least 5 bar to open the main poppet. Pilot oil returns externally, giving the designer control over drain routing. Pilot volume is 19.27 cm³ at port X and 17.5 cm³ at port Y, information used to size control lines for consistent response times. The assembly weighs 7.8 kg, allowing direct manifold mounting without extra brackets. These parameters enable the SL30PA2-4X/ to act as a dependable shutdown element in high-pressure, high-flow hydraulic systems.
Technical Specifications
Cleanliness Class Iso 4406 (c)
20/18/15
Connection Type
Subplate Mounting
Control Area A1
5.72 cm²
Control Area A2
1.33 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
Pilot Oil Return
External
Pilot Volume Port X
19.27 cm³
Pilot Volume Port Y
17.5 cm³
Porting Pattern
ISO 5781-09-13-0-16
Pre-opening
Yes
Weight
7.8 kg
1620 Old Apex Road
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