in Flowserve
Flowserve Series 22 Valve

Double Block & Bleed Manifold Valve

Recognising the need for plant safety during maintenance, Worcester have developed a double block and bleed design which utilises a manifold in conjunction with three A44 style valve bodies. This innovative arrangement provides two ball valves for upstream and downstream isolation with the third valve used to drain and to ensure total downstream isolation of the system. It also provides the benefits of space, weight and cost compared with using separate valves. Pressure Rating PN69 & Class 300. Materials: ASTM A352 LCB, ASTM A105, ASTM A216 WCB & ASTM A351 CF8M, ASTM A182 F316. Other materials available on request to suit specific process applications.These Worcester range of floating ball design double block and bleed ball valves are suitable for most process applications requiring confirmation of positive isolation. Available with either flanged, screwed, socket weld and butt weld end connections as standard.
The 40R is A high performance actuator which combines reliability and long life and is based on the opposed double rack and pinion principle utilising piston support rods to minimise friction and wear between pistons and body bore.

There are twelve sizes of Norbro double acting or fail safe spring return pneumatic actuators providing a torque range of 11 to 4617 Nm (at an operating pressure of 5.5 bar). This enables efficient and therefore economical torque matching.

A wide range of ancillary equipment can be fitted to meet the most exacting customer requirements. This is an area where Flow Control Solutions Ltd and Worcester has considerable experience and we would be pleased to discuss any process problems. Since the mid-Sixties the Norbro name has been recognised as the leading quarter turn actuator for industry. As proof of this, Norbro pneumatic actuators can be found in a range of applications as diverse as the petrochemical industry, food and beverage, steel production, pharmaceuticals and plastics manufacturing


Based on standard A44/A59 design for proven performance

Compact design: Saves space and weight

Wide range of materials to suit various applications

Locking wrench available for safety integrity

Full valve pressure rating: Suitable for process line pressures