Double/Twin Safety Relief Valves
Double safety relief valves also called twin pot safety relief valves are generally used in high capacity boiler applications.
Free flange drilling, pressure setting, testing and certification.
All safety relief valves supplied by ourselves are flanged drilled, set to your pressure requirements and issued with a certificate to the relevant standards at no extra cost.
723 / 726 / 733 / 736 – Bailey Birkett Double High Lift Cast Steel Safety Relief Valve
The 720 and 730 series of double (twin) high lift safety valves combine a top guided design, to provide an unobstructed seat bore, with a floating disc that aligns correctly under all working conditions. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost.
Double (Twin) Pot • High Lift • Side Discharge • Lever (726/736) or Dome Top (723/733)
Size & Connections
DN40 to DN100 • Flanged PN16/25/40, ANSI 150/300, BS10 E/F/H*
Air • Inert Gases • Oil • Process Liquids • Steam • Water
Cast Steel Body • Cast Iron Cover • Stainless Steel Disc
Set Pressure Range
683/686 : 0.25 to 13 bar • 693/696 : 0.25 to 13 bar
-20°C to 230°C
Compliance & Approvals
BS6759 Part 1, 2 & 3 (dependent on duty)
* Dependent on series, specify when enquiring