Bosch Rexroth | M-SR30KE05-1X
M-SR30KE05-1X/
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The M-SR30KE05-1X/ valve is produced by Bosch Rexroth as part of the Hy-Check Valves series. It serves as a unidirectional flow element in hydraulic automation, allowing fluid to pass in one direction and blocking reverse flow. The nominal size of 30 defines the flow passage and matches mid-range line dimensions in mobile and industrial circuits. Its angle valve design eases mounting in restricted manifolds where a 90-degree path is required. The cartridge check construction simplifies replacement and service while keeping envelope size compact. A maximum operating pressure of 420 bar permits use in high-pressure pumps and actuators, and a maximum flow of 400 l/min supports large volume demands without excessive differential pressure. The G 1 1/2 port thread corresponds to common pipe fittings for this flow class. A cracking pressure of 0.5 bar ensures the poppet opens quickly with minimal upstream loss, and unrestricted installation position lets designers orient the valve in any direction.
NBR seals resist common hydraulic oils, so the valve maintains tight shutoff over long duty cycles. The allowable ambient temperature range from −20 °C to +80 °C enables outdoor installation in varied climates. Fluid temperature can span −30 °C to +80 °C, covering both cold-start and elevated operating conditions without compromising seal integrity. The valve accepts oil viscosities between 2.8 mm²/s and 500 mm²/s, giving reliable movement of the poppet across thin startup oils and thickened high-load fluids. A mass of 0.47 kg aids manual handling during assembly or service, minimizing strain on technicians. Together these limits define the environmental and fluid envelopes in which the check valve operates while maintaining leakage control and functional stability.
Technical Specifications
Ambient Temp Max
+80 C
Ambient Temp Min
-20 C
Cracking Pressure
0.5 bar
Fluid Temp Max (nbr)
+80 C
Fluid Temp Min (nbr)
-30 C
Installation Position
Any
Max Flow
400 l/min
Max Operating Pressure
420 bar
Nominal Size
30
Port Thread (angle Valve)
G 1 1/2
Seal Material
NBR
Unit Design
Angle Valve
Valve Type
Check Valve (Cartridge)
Viscosity Max
500 mm b2/s
Viscosity Min
2.8 mm b2/s
Weight
0.47 kg
1620 Old Apex Road
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