BMD Back Pressure Valve
The BP50 series is a pilot operated regulator used where back pressure needs to be maintained in vent line applications. Typically used with separators, heat treaters, compressor stations and gas gathering systems.
- Zero-bleed emissions-free device
- Easy seat maintenance
- Various sizes and end connections
FW Murphy is the exclusive BMD distributor for new equipment packages.
The BP50 series valve provides a self-contained, pilot operated regulator to be used in various vent line applications including separators, heat treaters, compressor stations, gas gathering systems and any other application where back pressure needs to be maintained.
The BP50 is offered in 2”, 3”, 4” and 6” sizes. The 2” and 3” valve is available in both flanged and female NPT thread end connections. The flanged BP50 valves are pressure rated up to 250 psi, and the threaded end valves are rated up to 300 psi.
Maintenance is made simple via removing the bonnet to reveal the seat, allowing the valve body to remain in place during maintenance.
The pilot exhaust is vented into the downstream side of the valve making the BP50 a zero-bleed, emissions-free device.
Sizes: 2”, 3”, 4” and 6”
Connections: Female NPT (2” & 3” only), flanged
Body Type: Globe
Trim: Soft seat
Shutoff: Class VI
Pressure Rating:
300 psi – 2”, 3” NPT
250 psi – 2”, 3”, 4”, 6” flanged
Minimum Setpoint: 10 psi
Spring Range: 10-300 psi
Temperature Range: -20° F to 250° F (-29° C to 121° C)
Body, Bonnet and Hub Material: Ductile iron
BP50 Dimensions (inches)
| Valve Size | Body Dimension (inches) | |||
| End Connection | A | B | C | |
| 2″ | NPT | 8.5 | 2.38 | 12.66 |
| ANSI 150 | 9 | 2.88 | 12.66 | |
| 3″ | NPT | 12.06 | 3.75 | 13.60 |
| ANSI 150 | 12.19 | 3.75 | 13.60 | |
| 4″ | ANSI 150 | 15.06 | 4.44 | 14.31 |
| 6″ | ANSI 150 | 22 | 5.63 | 20.04 |
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