Does the STOP STP-U Brass Pneumatic Shut-Off Valve with Built-In GW Check Valve prevent actuator movement during sudden pressure loss?

Yes. The STOP STP-U Brass Pneumatic Shut-Off Valve with Built-In GW Check Valve prevents actuator movement during sudden pressure loss. It allows airflow only when a pneumatic control signal is present and instantly halts the actuator if pressure is lost. The integrated GW check valve and internal design maintain safety and reliability across 0.5–10 bar and −10°C to +60°C, ensuring the actuator is held securely when supply pressure drops.

Can the STOP STP-U Brass Pneumatic Shut-Off Valve with Built-In GW Check Valve be used in systems operating below 0.5 bar or above 10 bar without compromising safety?

The STOP STP-U Brass Pneumatic Shut-Off Valve with Built-In GW Check Valve is specified for an operating pressure range of 0.5 to 10 bar. Using it below 0.5 bar or above 10 bar would place the device outside its rated limits and could compromise safety and performance. Below 0.5 bar the valve may not reliably permit or interrupt flow as intended, risking actuator malfunction; above 10 bar the valve and internal seals (NBR) and components may be overstressed, risking leakage, failure of the check function or mechanical damage. For safe operation, remain within the stated 0.5–10 bar range and -10°C to +60°C temperature limits; for applications outside these bounds consult the manufacturer for a suitable alternative or validated modifications.

Valve shut-off pneumatic brass alloy STP-U with valve check female

All products, Pneumatic valves/

Additional information

Material	B – brass (bronze)

Valve shut-off alloy series STP-U with valve check with thread internal 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-W6001001001	Valve STOP with a valve check STP-U, 1/8" female / 1/8" male, pilot M5 female	-	10	In stock	Enquiry
MW-W6001011011	Valve STOP with a valve check STP-U, 1/4" female / 1/4" male, pilot 1/8" female	-	10	In stock	Enquiry
MW-W6001021021	Valve STOP with a valve check STP-U, 3/8" female / 3/8" male, pilot 1/8" female	-	10	In stock	Enquiry

Do you need a larger quantity of products or a bespoke quote?

Call us: +91 8 925 918 796 or email us: chennai@tubes-international.com

SEND ENQUIRY

Valve shut-off alloy series STP-U with valve check with thread internal 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.