Spring Load Safety Valve

Name: Spring Load Safety Valve
Brand: VTXFLOW

Conventional and balanced-bellows types, open or closed bonnet.

Safety Valve Series

Spring Load Safety Valve

Direct spring-loaded safety valves relieve overpressure on boilers, vessels and pipelines. Conventional and balanced-bellows designs, open or closed bonnet, set and sealed on our certified test benches.

As part of the VTXFLOW safety valve range, every spring load safety valve is produced under our certified quality system — from in-house casting and CNC precision machining to 100% pressure and seat-tightness testing before shipment, with EN 10204 3.1 material certificates supplied.

ASME Sec I & VIII / API 526 designs
Balanced bellows for back-pressure service
Adjustable blowdown control rings
Every valve set-pressure tested & sealed

Request a Quote

Spring Load Safety Valve — VTXFLOW Safety Valve Series

Technical Specifications

Size Range	3/4" – 12" inlet (DN20 – DN300)
Set Pressure	0.1 – 42 MPa
Body Materials	WCB, WC6, CF8, CF8M, A105
Design Standards	ASME BPVC Sec. I & VIII, API 526, API 527, GB/T 12243
Temperature Range	-196°C to +600°C

Typical Applications

Steam boilersPressure vesselsRefinery relief systemsGas storageHeat exchangers

How to Order — What to Specify

Inlet size and orifice designation (API 526)
Set pressure and allowable overpressure
Back pressure: constant or variable (bellows if needed)
Medium, temperature and required capacity
Body / trim materials
Bonnet type and lifting lever requirement
Code: ASME Sec I or Sec VIII
Options: jacket, gag, test certificate witness

Every spring load safety valve is shell and seat tested to API 598 / ISO 5208 before shipment and delivered with EN 10204 3.1 material certificates. PMI, NDE and third-party inspection (SGS / BV) are available on request.

Other Safety Valve Products

Pilot Operated Safety Valve High Performance Steam Safety Valve Jacketed Safety Relief Valve All Safety Valves →

Get a Quote

Request a Quotation

Interested in the spring load safety valve? Tell us your size, pressure class, material, standard and quantity — our engineers respond within 24 hours.