Thermal Safety Valve Manufacturer in India

Speciality Valve is a leading Thermal Safety Valve Manufacturer in India, supplying high-performance valves engineered to protect pipelines, vessels, and process systems from pressure surges caused by thermal expansion. Designed to international standards, our valves are widely used across oil & gas, petrochemical, power, marine, and water industries in India and exported worldwide to the USA, Europe, GCC, and Africa.

Function & Working

Thermal safety valves automatically relieve excess pressure generated when trapped liquids expand due to rising temperatures. At a pre-set limit, the valve opens instantly to release the overpressure and closes bubble-tight once conditions normalize. This ensures uninterrupted plant safety and extended equipment life.

Materials & Construction

Speciality Valve manufactures thermal safety valves in a wide range of materials, tailored for service conditions:

• Carbon Steels (WCB, WCC, WC6): Industrial service, steam, and high-pressure duty

• Low-Temperature Carbon Steels (LCB, LCC): Cryogenic and sub-zero operations

• Stainless Steels (CF8, CF8M, 304, 316/316L, 321): Chlorides, oxidizers, and corrosive chemicals

• Nickel Alloys (Inconel 625, Inconel X750): High-temperature and fatigue resistance, ideal for springs and bellows

• Bronze & Brass Alloys (CC491K, CW614N, CW452K): Cryogenic and refrigeration duties

• PTFE / RPTFE Linings: Full wetted surface protection for chlorine, bleach, caustics, and toxic media

• Exotic Alloys (Duplex, Super Duplex, Titanium Grades 2 & 7): For seawater, desalination, and highly aggressive chloride applications

Technical Specifications

• Size Range: ½″ – 12″ (DN15 – DN300)

• Pressure Ratings: ASME Class 150 – 1500 / PN10 – PN250

• Set Pressure Range: 5 bar – 250 bar (customizable)

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

• Design Standards: API 520, 521, 526, ASME Section VIII, ISO 4126, PED 2014/68/EU

• Testing: API 598 / ISO 5208 hydrostatic and seat leakage testing

• Special Features: Fire-safe construction, anti-static device, blow-out-proof stem, ISO 5211 mounting pad for actuation

Advantages of Speciality Valve Thermal Safety Valves

• Wide size coverage up to 12″ (DN300) and pressure classes up to Class 1500

• Precision-engineered springs and bellows using Inconel for repeatable relief accuracy

• Compact, reliable designs suitable for manual or automated operation

• Long service life with minimal maintenance, even in corrosive and high-temperature service

• Export-ready valves manufactured in India under strict QA and global certifications

Industries Served

• Oil & Gas (onshore, offshore, LNG)

• Petrochemical & Refinery Applications

• Power Generation (thermal, nuclear, renewable)

• Desalination & Marine Water Systems

• Chemical & Chlor-Alkali Plants

• Pulp & Paper Processing

• Water Treatment & Industrial Utilities

Why Choose Speciality Valve

• Indian Manufacturing, Global Reach: Exporting to USA, Europe, GCC, and Africa

• Material Superiority: From carbon steel to titanium and Inconel, built for real-world service

• Global Standards: API, ASME, ISO, and PED compliant designs

• Engineered Longevity: Valves that provide safety, reliability, and lower lifecycle cos