Pneumatically actuated valves for quality and accuracy in fluid control The Spirax Sarco range of QL valves and pneumatic actuators are designed to give a comprehensive selection of control valves for use on water, oils, and most industrial fluids. With valve body ratings up to 40 bar and a range of body materials to select from, the Spirax Sarco QL valve, coupled to either the PN5000 or PN6000 pneumatic diaphragm actuator, provides the complete solution for most flow, pressure or temperature control application.
Valve options Operation Model Size DN Material Connections Maximum differential Maximum operating pressure temperature Mixing QL73 15 - 100 SG iron Flanged BS 4504 PN25 25 bar 250°C QL43 15 - 100 Cast steel Flanged BS 4504 PN40 40 bar 250°C Diverting QL73D 15 - 100 SG iron Flanged BS 4504 PN25 25 bar 250°C QL43D 15 - 100 Cast steel Flanged BS 4504 PN40 40 bar 250°C