Bosch Rexroth | SV10GA4-4X12
SV10GA4-4X/12
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The SV10GA4-4X/12 is produced by Bosch Rexroth within the Hy-Check Valves series and serves as a pilot-operated element for blocking flow in hydraulic automation. A threaded connection allows direct installation into manifolds without additional flanges, and the nominal size 10 cavity supports medium flow rates in mobile or industrial circuits. Flow moves freely from port A to port B, while reverse flow from B to A requires the pilot stage to open, a configuration that prevents unintended back-pressure losses. The valve includes pre-opening so a small bypass path reduces pressure shocks before the poppet lifts fully, and the main poppet begins to open once the differential reaches 10 bar. Control area A1 is 1.33 cm², defining the pilot force required to shift the poppet, while the pilot port X holds 2.5 cm³ of oil, affecting response time. Pilot operation is available down to 5 bar and remains usable up to 350 bar, aligning with common system pressures.
The maximum operating pressure across the main ports is 350 bar, enabling use in high-pressure circuits without derating. A larger control area A3 of 3.8 cm² provides additional hydraulic leverage during full-stroke movement, ensuring reliable opening under heavy loads. Ports A and B are tapped with G 1/2 threads for straightforward connection to standard tube fittings, and the unit can be mounted in any position, simplifying layout in compact power units. Required fluid cleanliness is ISO 4406 (c) 20/18/15 to protect sealing edges and maintain repeatable switching. Pilot oil drains internally so no external line is needed, reducing plumbing complexity. The assembly weighs 2.1 kg, light enough for manifold blocks supported only by pipework. This specification set creates a check function that combines fast response, high pressure capability, and minimal external accessories for efficient hydraulic control.
Technical Specifications
Cleanliness Class
ISO 4406 (c) 20/18/15
Control Area A1
1.33 cm2
Control Area A3
3.8 cm2
Direction Of Flow
A->B Free; B->A By Opening
Installation Position
Any
Max Operating Pressure
350 bar
Mounting Type
Threaded Connection
Nominal Size
10
Opening Pressure
10 bar
Pilot Oil Drain
Internal
Pilot Port X Volume
2.5 cm3
Pilot Pressure Max
350 bar
Pilot Pressure Min
5 bar
Port A,b Threads
G 1/2
Pre-opening
With Pre-Opening
Weight
2.1 kg
1620 Old Apex Road
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