Safety Relief Valves

Name: Safety Relief Valves
Brand: Key High Vacuum Products

Key High’s Safety Relief Valves (SRV Series) are spring-loaded, direct-acting safety devices. The SRV Series are designed as protection devices that vent positive pressure to the atmosphere. These valves feature highly accurate cracking and reset pressures. Key High’s SRV valves will virtually eliminate dangerous overpressure situations in many vacuum systems.

Construction

Construction is made from vacuum-grade materials: a stainless-steel body, a stainless-steel spring, and a Viton® seat. Every valve is 100% tested prior to shipment. SRV valves will protect expensive gauges, viewports, etc., in the event of most overpressure situations.

Types

Key High offers the SRV Series with two different cracking pressures. 0.2 psig or 2.0 psig. SRV Valves are mounted on NW 25 or NW 40 flanges.

SRV Series Ordering Information

PART NUMBER	FLANGE MOUNT	CRACKING PRESSURE
SRV-25 ★	NW25	0.2 PSIG
SRV-40 ★	NW40	0.2 PSIG
SRV-25-125	NW25	2.0 PSIG
SRV-40-125	NW40	2.0 PSIG

Note: ★ - The 0.2 psig "cracking pressure" valves must be installed with the poppet in the vertical position. Other flange mountings are available upon request.

Product information is subject to change without notice. Product images may include options or accessories not included with the base model.

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Precision Welded. Performance Proven.

For 50 years, Key High Vacuum Products, Inc. has been a trusted leader in precision-engineered stainless steel high vacuum weldments. With tens of thousands of unique weldments in use—from particle accelerators to industrial leak detectors—our expertise is proven across industries. Rooted in innovation, craftsmanship, and an unwavering commitment to customer satisfaction, we deliver high-quality, customized solutions that drive success. Every day, our team brings a unique blend of passion and precision, ensuring your goals are met with excellence—because your mission matters. Experience the Key High difference.

Key High Vacuum Products, Inc.

36 Southern Boulevard, Nesconset, NY 11767

1-631-360-3970