Pilot Operated Safety Valve

Name: Pilot Operated Safety Valve
Brand: VTXFLOW

Full lift at set pressure, ideal near operating pressure.

Safety Valve Series

Pilot Operated Safety Valve

A pilot senses system pressure and holds the main disc closed with system media itself — allowing operation up to 98% of set pressure with zero simmer, and full lift exactly at set point.

As part of the VTXFLOW safety valve range, every pilot operated 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.

Operate to 98% of set pressure
Pop or modulating pilot action
Bubble-tight until set point — no simmer loss
Large orifices for high relieving capacity

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Pilot Operated 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 pilot operated 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

Spring Load Safety Valve High Performance Steam Safety Valve Jacketed Safety Relief Valve All Safety Valves →

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