About Product
The Onus SR-05 is a spring-loaded safety relief valve engineered to provide dependable protection against overpressure conditions. Built in accordance with API & ASME standards, it is designed with a focus on operational reliability, simplified maintenance, and reduced lifecycle costs.
Developed with input from industry professionals, the SR-05 features a streamlined internal layout with fewer moving parts, helping minimize downtime, reduce spare part requirements, and make servicing quicker and more efficient. This valve is ideally suited for critical applications across process, chemical, and energy industries where safety and performance cannot be compromised.
•ASME SEC. VIII DIV. 1 COMPLIANCE
Designed in accordance with the ASME Boiler and Pressure Vessel Code for pressure relief devices.
•API 527 LEAKAGE PERFORMANCE
Factory-tested to meet industry benchmarks for seat tightness and reseating accuracy.
•API 520 SIZING METHODOLOGY
Ensures accurate valve selection based on flow capacity and pressure conditions.
•ADJUSTABLE BLOWDOWN RING
Enables precise control over blowdown for stable reseating and reduced pressure fluctuation.
•BALANCED BELLOWS OPTION
Maintains accurate set pressure performance under varying back pressure conditions.
•HARDENED & STELLITED SEATS
Extends service life and improves sealing integrity in demanding applications.
•WIDE PRESSURE & TEMPERATURE RANGE
Available for a broad spectrum of set pressures and media temperatures, offering true process versatility.
•DIVERSE MATERIAL SELECTION
Available in carbon steel, stainless steel, and exotic alloys (Monel, Hastelloy, etc.) for corrosion resistance and compatibility with aggressive media.
•VERSATILE SPRING OPTIONS
Springs offered in various materials to match operating conditions such as extreme temperatures or corrosive environments.
DESIGN CODE: ASME SEC VIII
SIZING & SELECTION: API 520
SEAT LEAKAGE CODE: API 527
BODY MOC: STAINLESS STEEL (304, 316, 304L, 316L), CARBON STEEL, MONEL, HASTELLOY C
TRIM: SS 304L, SS 316L, HASTELLOY C, INCONEL MONEL
SET PRESSURE RANGE: 0 to 100 Bar
TEMPERATURE RANGE: 0 to 300 °C
END CONNECTION: FLANGED (ASME B16.5 ) / SCREWED
