S30P05-1X/ SO74

The S30P05-1X/ SO74 valve belongs to the Type S Check Valves series from Bosch Rexroth and is installed in hydraulic automation to permit flow in one direction while blocking reverse flow. With a nominal size of NG 30, the unit supports circuits where space and port geometry follow this dimension. It opens at a cracking pressure of 0.5 bar, so minimal upstream pressure is needed to begin flow. Once open, it conducts up to 450 l/min, fitting medium-to-high flow manifolds. The body and seat withstand a continuous operating pressure of 420 bar for use in high-pressure pumps and actuators. Correct operation depends on fluid cleanliness maintained at ISO 4406 class 20/18/15 to protect the sealing edges from abrasion.

For thermal and viscosity limits, the S30P05-1X/ SO74 remains functional with hydraulic oil between -30 °C and 80 °C, enabling cold-start and elevated temperature service without loss of sealing integrity. Viscosity may vary from 2.8 mm²/s to 500 mm²/s, so the valve handles both thin fluids at startup and thicker oils under heavy load. The design carries an MTTFd of 150 years, providing a long statistical life for safety-related calculations in automated machinery. Despite this longevity, the component weighs 2.5 kg, which eases manifold mounting and simplifies maintenance access.