bf valve bf valve
bf valve
Application

- Water works
- Power Plant
- Sewage plant
- Heating and Ventilation
- Desalination plant
- Air conditioning
- Gas Plant
- Chemical Industry etc
- Shipbuilding Industry
- Irrugation

Connection Flange
- BS4504 PN10, PN16 / DIN2501 PN10, PN16 ANSI B 16.1 CL, 125LB &
  B16.5 CL, 150LB
- MSS SP44 CL, 150LB
- AWWA C207 Class D & E
- ISO 2531 PN10 PN16 / KS/JIS 10K, 16K and 20K

Face to Face Dimensions
Conform to BS5155, ISO 5752, AWWA C504, KS B 2333

Production Range
SIZE Working Pressure Working Temperature
DN 80 to DN 2400 (3 inch ~ 96inch) Up to 30bar -20 ~ +160

bf valve is a valve which can be used for isolating or regulating flow. The closing mechanism takes the form of a disk. Operation is similar to that of a ball valve, which allows for quick shut off. bf valves are generally favored because they are lower in cost to other valve designs as well as being lighter in weight, meaning less support is required. The disc is positioned in the center of the pipe, passing through the disc is a rod connected to an actuator on the outside of the valve. Rotating the actuator turns the disc either parallel or perpendicular to the flow. Unlike a ball valve, the disc is always present within the flow, therefore a pressure drop is always induced in the flow, regardless of valve position.

bf valve is from a family of valves called quarter-turn valves. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is fully open, the disc is rotated a quarter turn so that it allows an almost unrestricted passage of the fluid. The valve may also be opened incrementally to throttle flow.
 
There are different kinds of bf valves, each adapted for different pressures and different usage. The resilient bf valve, which uses the flexibility of rubber, has the lowest pressure rating. The high performance bf valve, used in slightly higher-pressure systems, features a slight offset in the way the disc is positioned, which increases the valve's sealing ability and decreases its tendency to wear. The valve best suited for high-pressure systems is the triple offset bf valve, which makes use of a metal seat,[clarification needed] and is therefore able to withstand a greater amount of pressure.