Bosch Rexroth | SL10GA2-4XV
SL10GA2-4X/V
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The SL10GA2-4X/V valve belongs to the Hy-Check Valves series from Bosch Rexroth and is intended to control flow direction and pressure in automated hydraulic circuits. A nominal size of 10 (NG10) provides a passage area suited to medium-capacity lines, while the threaded connection type G simplifies direct mounting in manifolds or pipe systems. Port A/B threads are G1/2, allowing the main flow ports to match common hydraulic fittings. Flow moves freely from A to B, but B to A is blocked unless the pilot signal is present, so the valve can hold loads until commanded. A pre-opening feature on port A bleeds a small volume first, cushioning pressure surges before full poppet travel. The cracking pressure is set at 3.0 bar, establishing the minimum differential required to begin opening. A 350 bar maximum operating pressure lets the unit work in high-pressure installations, and any installation position is permitted for flexible layout. The 2.1 kg weight supports easy handling during maintenance.
The mean time to dangerous failure is rated at 150 years, giving long service life within safety-related systems. Pilot oil is returned externally through port Y so return flow does not enter the work line and disturb accuracy. A pilot volume of 2.5 cm³ at port X and 2.0 cm³ at port Y defines the fluid needed to shift the poppet, which guides circuit designers when sizing control lines. Pilot ports use G1/4 threads to fit standard small-bore tubing. An FKM seal set resists elevated temperature and aggressive fluids, extending service intervals. System cleanliness must be kept at class 20/18/15 per ISO 4406 so the seat remains free of abrasive particles and the valve closes reliably. These characteristics combine to provide stable, low-leakage check functionality under demanding hydraulic operating conditions.
Technical Specifications
Cleanliness Class
20/18/15 (ISO 4406)
Cracking Pressure
3.0 bar
Direction Of Flow
A->B Free; B->A When Piloted
Installation Position
Any
Maximum Operating Pressure
350 bar
Mttfd
150 years
Nominal Size
10 (NG10)
Pilot Oil Return
External (Port Y)
Pilot Volume Port X
2.5 cm³
Pilot Volume Port Y
2.0 cm³
Port A/b Thread
G1/2
Port X/y Thread
G1/4
Pre-opening
With Pre-Opening (A)
Seal Material
FKM
Type Of Connection
Threaded Connection (G)
Weight
2.1 kg
1620 Old Apex Road
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