Walker’s Back Pressure Valve Cabinets (BPVC) provide pressurization to a high pressure dielectric fluid underground cable.
Normally, pressurizing plants provide the necessary pressure for high voltage underground cables. However, in instances where the cable is short in length, as in feeders that have both terminals in the same substation, it is more economical to utilize a BPVC.
The supply for the BPVC is from a high pressure feeder that is pressurized from another source. A check valve is located within the BPVC to protect the feeder being pressurized in the event the source feeder suddenly loses pressure.
Equipment & Accessories in Support of HPFF / SCFF Pipe Type Transmission Cable Systems