R40 valves have been designed to meet the need for an inexpensive but reliable single seat control valve suitable for on-off duty or modulating applications. They are offered with a complete specification including a choice of flanged or screwed bodies, metal or soft eating, direct or reverse acting actuators and all the usual accessories such as limit switches, pilot and solenoid valves, top mounted hand-wheel etc.
Valve plugs with a linear characteristic are used in both on-off and modulating valves, since this form of plug is ideal for non-shock and control service.
Unless otherwise specified, on-off valves will be supplied to fail safe, i.e. close on air failure with direction of flow assisting to shut the valve.
½”, 3/4″, 1″, 1½”, 2″
Flanged or screwed to customer’s requirements.
Cast Steel, St/steel, Bronze body to special order.
Plug/Stem St/steel. Seat St/steel screwed in Tight shut-off by
Elastomer or Fluon 0-rings.
PTFE – self lubricating.
Neoprene, 2-ply reinforced
3 – 15 or 6 – 30 p.s.I.g.
25 sq.in – 9″ dia., 50 sq.in. – 12″ dia.
MAXIMUM ACTUATOR PRESSURE