What is the maximum operating pressure for the STOP STP-U Brass Pneumatic Shut-Off Valve with Check Valve and Plug-In Connector?

The maximum operating pressure for the STOP STP-U Brass Pneumatic Shut-Off Valve with Check Valve and Plug-In Connector is 10 bar.

How does the integrated check valve in the STOP STP-U Brass Pneumatic Shut-Off Valve with Check Valve and Plug-In Connector prevent actuator movement during pressure loss?

The integrated check valve in the STOP STP-U Brass Pneumatic Shut-Off Valve with Check Valve and Plug-In Connector prevents actuator movement during pressure loss by mechanically blocking reverse airflow when the control pressure is absent. Under normal operation the solenoid-controlled shut-off permits supply air to flow to the actuator. If the control signal or system pressure drops, the check valve immediately closes, sealing the actuator port and stopping any downstream air from escaping or leaking back into the supply. This trapped volume of air holds the actuator in its last safe position, preventing unintended motion. The robust nickel-plated brass body and NBR sealing ensure a tight, reliable seal under the device’s operating range (0.5–10 bar, -10°C to +60°C), so the check valve consistently engages to secure the actuator and maintain process safety during pressure loss.

Valve shut-off pneumatic brass alloy STP-U with valve check of coupling push-in

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Additional information

Material	B – brass (bronze)

Valve shut-off alloy series STP-U with valve check with coupling push-in used mainly as valve safety. Po mounting on connections supply actuator allows on Flow rate air only in the presence pneumatic signal control. actuator is stopped po a drop pressure control. Working pressure: 0.5 ÷ 10 bar. Operating temperature: od -10°C up to +60°C. Body material: brass nickel-plated. sealing: NBR.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
MW-W6001001106	Valve STOP with a valve check STP-U, hose 6 mm / 1/8" male, pilot M5 female	-	10	In stock	Enquiry
MW-W6001011106	Valve STOP with a valve check STP-U, hose 6 mm / 1/4" male, pilot 1/8" female	-	10	In stock	Enquiry
MW-W6001011108	Valve STOP with a valve check STP-U, hose 8 mm / 1/4" male, pilot 1/8" female	-	10	In stock	Enquiry
MW-W6001021108	Valve STOP with a valve check STP-U, hose 8 mm / 3/8" male, pilot 1/8" female	-	10	In stock	Enquiry
MW-W6001021110	Valve STOP with a valve check STP-U, hose 10 mm / 3/8" male, pilot 1/8" female	-	10	In stock	Enquiry
MW-W6001031112	Valve STOP with a valve check STP-U, hose 12 mm / 1/2" male, pilot 1/8" female	-	10	In stock	Enquiry

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Valve shut-off alloy series STP-U with valve check with coupling push-in used mainly as valve safety. Po mounting on connections supply actuator allows on Flow rate air only in the presence pneumatic signal control. actuator is stopped po a drop pressure control. Working pressure: 0.5 ÷ 10 bar. Operating temperature: od -10°C up to +60°C. Body material: brass nickel-plated. sealing: NBR.