Bosch Rexroth | SL10PA2-4XV
SL10PA2-4X/V
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The SL10PA2-4X/V valve is produced by Bosch Rexroth for the Hy-Check Valves series and serves as a pilot-operated check element in hydraulic automation circuits. Its size is NG10, so the flow passages match cavities commonly used in medium-capacity manifolds. A subplate mounting interface lets technicians replace the unit without disturbing hard piping, while a weight of 1.8 kg keeps installation manageable in tight panel spaces. The porting pattern follows ISO 5781-06-07-0-16, ensuring dimensional interchangeability with other standardized components. FKM seals are fitted to tolerate mineral or synthetic hydraulic fluids when temperatures rise. The valve requires system fluid to meet ISO 4406 20/18/15 cleanliness so internal seats remain free of abrasive contamination. It withstands operating pressures up to 350 bar, allowing placement in high-pressure supply lines, and a cracking pressure of 3.0 bar defines the differential at which initial flow begins.
A control area of 1.33 cm² on side A1 provides the piston surface needed for dependable pilot actuation, while a 0.79 cm² area on side A4 establishes the holding force for reverse flow check. The unit is built with pre-opening, which reduces pressure surges by allowing a metered flow path before the main poppet lifts. Pilot control is available across a 5 bar to 350 bar range, giving flexibility for low-pressure release or full-pressure locking. Pilot oil is returned externally through the Y port so backpressure in the tank line does not influence valve behavior. A pilot volume of 2.5 cm³ at port X and 2.0 cm³ at port Y sets predictable response times for engage and release cycles, allowing circuit designers to match valve dynamics to actuator requirements.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Control Area A1
1.33 cm2
Control Area A4
0.79 cm2
Cracking Pressure
3.0 bar
Max Operating Pressure
350 bar
Pilot Oil Return
External (Y Port)
Pilot Pressure Max
350 bar
Pilot Pressure Min
5 bar
Pilot Volume Port X
2.5 cm3
Pilot Volume Port Y
2.0 cm3
Porting Pattern
ISO 5781-06-07-0-16
Pre-opening
With Pre-Opening
Seal Material
FKM
Size
NG10
Type Of Connection
Subplate Mounting
Weight (subplate Mounting)
1.8 kg
1620 Old Apex Road
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