BONETTI PBR valve is specifically designed for discontinuous blow-down/blow-off

These valves are usually used when tight seal is needed after a blow-off operation. This utilization could be required by process necessity and/or economical reasons.

In the past the two functions were mostly perrformed by two different

valves, fitted in series and operated in accordance with a definite sequence.

Our valve type PBR carries out both functions in sequence and namely:
blowoff with valve suitably open and tight sealing with valve closed.

It is a multistage valve splitting the pressure drop along the whole disk that is along the different stages of the disk.

The design of the disk, of the fluid path inside the valve as well the materials are suitable to operation with high Δp, therefore usually with critical flow.

The stem is rising, non-rotating.

 If no closing seal tight is required, a BONETTI BLB for continuous blow-down is a suitable, more economic solution.

PBR applications:

• used when a tigh seal is needed after a blowoff operation

PBR features:

• Pressure Seal bonnet
• non-rotating stem
• operates with very high Δ pressure
• any actuator can be easy assembled