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BIRKETT D Series Safety & Thermal Relief Valve
The D Series gas and liquid thermal relief valve is designed for similar duties to the WB but for smaller capacity applications. Developed on Birkett’s extensive in-house mass flow test facility, they safely relieve thermal expansion of process fluids in vessels and long lengths of pipework, and are suitable for gas and liquid applications. All are certified in accordance with ASME Code Section VIII.Read More
BIRKETT D Series Safety & Thermal Relief Valve
The D Series’ high performance springs are specially designed to guarantee set point repeatability. The material selection of guiding components, together with self-aligning disc pivot points, ensures correct alignment and no galling of guiding surfaces.
Interchangeable parts mean all valves can easily be modified from gas to liquid or liquid to gas with the minimum number of parts. For flanged versions, a slip-on inlet flange makes it easier to realign into existing pipework after servicing for simplified maintenance.
A wide range of materials is offered, including non-ferrous for low temperature and oxygen service, and exotic alloys specified for the chemical and process industries. The 7D is available with a soft seat or metal seat, while the 6D is metal seated only. The D Series is certified for all media without modification.
A selection of accessories is available to comply with international codes and to suit system requirements. These include:
- Packed lever
- Balanced piston
- Test gag
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