Bosch Rexroth | SL10PA1-4XV
SL10PA1-4X/V
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The SL10PA1-4X/V valve is manufactured by Bosch Rexroth for the Hy-Check Valves series and is applied in hydraulic automation to block reverse flow while allowing controlled free flow. It fits NG 10 cavities, matching medium-size circuit layouts. Subplate mounting permits fast removal without disturbing pipework, and the ISO 5781-06-07-0-16 porting pattern aligns the body with standard manifolds. Flow is free from port A to port B and permitted from B to A only when the pilot line is energized, providing selective reverse flow. A cracking pressure of 1.5 bar keeps the valve shut until the set differential is reached. Version A includes a pre-opening feature that reduces pressure shocks during actuation. The housing tolerates 350 bar maximum operating pressure for use in high-pressure lines and weighs 1.8 kg on its supplied subplate, keeping manifold assemblies compact.
The valve needs a 5 bar minimum pilot pressure to release the checked flow, ensuring predictable switching. Pilot oil returns externally through port Y to prevent internal back pressure, while pilot volumes of 2.5 cm³ at port X and 2.0 cm³ at port Y define the oil required for each control stroke. System fluid must meet ISO 4406 20/18/15 cleanliness to protect sealing surfaces. FKM seals withstand elevated temperatures and common hydraulic media, extending service life. Installation uses M10 × 50 screws in accordance with ISO 4762 to secure the body with the correct clamp force. A mean time to dangerous failure of 150 years supports long service intervals in safety-related systems. These characteristics detail how the SL10PA1-4X/V integrates precise control and durability into demanding hydraulic automation tasks.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Connection Type
Subplate Mounting
Cracking Pressure
1.5 bar
Direction Of Flow
Free A→B; B→A When Piloted
Maximum Operating Pressure
350 bar
Minimum Pilot Pressure
5 bar
Mounting Screws
M10 x 50 (ISO 4762)
Mttfd
150 Years
Pilot Oil Return
External (Port Y)
Pilot Volume Port X
2.5 cm3
Pilot Volume Port Y
2.0 cm3
Porting Pattern
ISO 5781-06-07-0-16
Pre-opening
Yes (Version A)
Seal Material
FKM
Size
NG 10
Weight (subplate)
1.8 kg
1620 Old Apex Road
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