Safety Relief Valve Manufacturer in India

Speciality Valve is a leading Safety Relief Valve Manufacturer in India, supplying valves designed to protect equipment and pipelines from overpressure conditions. Built to ASME, API, and ISO standards, our safety relief valves are available in spring-loaded and pilot-operated designs for steam, liquid, gas, and cryogenic applications.


Function & Working

When system pressure exceeds the set limit, a safety relief valve automatically opens to release excess pressure. Once the system returns to a safe level, the valve reseats to prevent further leakage. These valves provide reliable protection for boilers, pipelines, storage tanks, compressors, and process systems.


Advantages

  • Accurate pressure relief with quick response

  • Available in conventional, balanced, and pilot-operated designs

  • Suitable for low, medium, and high-pressure ranges

  • Handles liquids, gases, vapors, and steam

  • Designed for safe operation in critical services


Types Offered

  • Conventional Spring-Loaded Safety Relief Valve

  • Balanced Bellows Safety Valve

  • Pilot-Operated Safety Relief Valve

  • Steam Safety Valve

  • Liquid Safety Relief Valve

  • Cryogenic Safety Relief Valve


Industries Served

  • Power Generation (Boilers, Turbines, Steam Systems)

  • Oil & Gas, Petrochemicals, Refineries

  • Marine & Offshore Applications

  • Water Treatment & Desalination Plants

  • Chemical & Fertilizer Industries

  • LNG & Cryogenic Facilities


Technical Specifications

  • Design Standards: ASME Sec. VIII, API 520/526, ISO 4126

  • Size Range: DN15 – DN600 (½″ – 24″)

  • Pressure Ratings: Class 150 – 2500 / PN10 – PN400

  • Temperature Range: –196 °C to +500 °C

  • End Connections: Flanged (RF/RTJ), Threaded (NPT/BSP), Butt Weld (BW), Socket Weld (SW)

  • Operation Types: Spring-loaded, Balanced Bellows, Pilot-Operated


Body & Trim Material Options

MaterialGrade / StandardApplication Use
Cast IronASTM A126Low-pressure steam and water
Ductile IronASTM A536Industrial water and air systems
Carbon SteelASTM A216 WCB, A352 LCB/LCCGeneral service, low-temperature duty
Stainless SteelASTM A182 F304, F316, F316LSteam, gas, and corrosive applications
Duplex Stainless SteelASTM A890 Gr. 4A (2205)Offshore, seawater, and chloride service
Super Duplex StainlessASTM A890 Gr. 5A (2507)Desalination, marine, aggressive fluids
Aluminium BronzeASTM B148 C95800 (AB2)Marine and seawater service
TitaniumASTM B367 Gr. C2Seawater cooling, desalination plants
HastelloyASTM B622 C276Highly corrosive chemical media
MonelASTM B127 400 / K-500Marine and brine services
InconelASTM B564 625 / 825High temperature, aggressive environments
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