Dresser Actaris Gas Regulators
Dresser SRV Safety Relief Valves
Spring-loaded relief valves for releasing limited volumes of gas downstream of pressure regulators where controlled venting is permitted.
SRV 801 / 811
Low-pressure models that help avoid unnecessary safety shut-off operation caused by thermal expansion, transient surges or regulator creep. The shared manufacturer datasheet covers the 801 and 811 variants; the correct spring and pressure range must be selected for the installation.
Download SRV 801 / 811 Datasheet (PDF) ↓
SRV 803
A medium-pressure relief valve with a setting range of 0.15–5 bar, depending on the model and spring. It uses a diaphragm-operated, spring-loaded throttling mechanism and a ductile iron body.
Download SRV 803 Datasheet (PDF) ↓
SRV 811R
A relief valve intended for indoor installations and low-to-medium pressure settings. Its specified relief setting range is 30–650 mbar, with DN20 threaded connections.
