Zeron Fastners
Industrial Valves & FastenersSafety Valves
Safety Valves are critical failsafe devices designed to automatically relieve dangerous overpressure from boilers, pressure vessels, pipelines, and gas equipment without relying on electrical or external power. At Zeron Fastners, we manufacture robust Safety Valves engineered in compliance with international boiler and pressure vessel codes, ensuring immediate pop-action discharge when pressure exceeds set thresholds.
Our Safety Valves feature high-integrity spring mechanisms, precision-lapped nozzle and disc assemblies, and stellite-faced seating surfaces to ensure tight reseating after discharge. Fabricated in Carbon Steel (WCB, WC6, WC9), Stainless Steel (CF8M), and corrosion-resistant Super Alloys, our safety valves serve critical applications in thermal power stations, petrochemical processing, LNG handling, and steam utility systems.
Technical Specifications
| Specification Feature | Details & Standard Compliance |
|---|---|
| Design Standards | ASME Section I & VIII, API 520, API 526, ISO 4126 |
| Size Range | 1/2" x 1" to 8" x 10" (Inlet x Outlet) |
| Set Pressure Range | 0.5 Bar to 400 Bar (7 PSI to 5800 PSI) |
| Pressure Rating | Class 150# to Class 2500# (PN16 to PN420) |
| Body Materials | ASTM A216 WCB, A217 WC6/WC9, A351 CF8M, Monel, Inconel 625 |
| Nozzle & Disc | SS 316 / SS 316L with Stellite hardfacing |
| Spring Material | Silicon Manganese, Chrome Vanadium, Inconel X-750 |
| Bonnet Types | Open Bonnet with Lifting Lever, Closed Gas-Tight Bonnet |
| Discharge Type | Full Lift, High Lift, Standard Lift |
| Testing Standard | ASME PTC 25, API 527 (Seat Tightness Testing) |
Safety Valve Varieties
| Type & Model | Key Features & Operating Applications |
|---|---|
| Boiler Steam Safety Valves | ASME Section I certified full-lift valves with open bonnet and lifting lever for steam drums. |
| Thermal Pressure Safety Valves | Closed bonnet valves designed to protect process vessels and piping from thermal expansion. |
| Pilot-Operated Safety Valves | High-capacity valves using system pressure to hold the main seat tighter as pressure increases. |
| Low Pressure Safety Valves | High sensitivity valves for gas storage and low-pressure cryogenic tanks. |
