About us
Pressure Only Vents

To ensure that tanks and vessels are kept safe during filling or thermal expansion, we offer a range of weight loaded or spring-loaded pressure only relief devices.

All vents come pre-set with full certification including material test certificates, Atex certificate of conformity and function test certificates.


They are available in a variety of designs

Open to atmosphere or Closed (piped away) vent

Standard Pressure settings + 2 mbarg to 100 mbarg for weight loaded

Standard Pressure settings + 100 mbarg to 1000 mbarg for spring loaded

Size range 2" (DN50 mm) – 12" (DN300 mm)

Body materials – Aluminium, Carbon steel, Stainless steel, Polypropylene

Trim material – Stainless steel, Hastelloy, Polypropylene

Diaphragm material – FEP

Removable seats with self-draining design to prevent freezing

Connections to suit your tank typically ANSI/DIN/API

Lightweight design

Nonstandard applications –such as steam jacketed, Derakane coated - please consult us.

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Pressure Only Vents

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