The schematic diagram below shows the single block and bleed valve manifold.
Removing the DP transmitter (DPT in diagram above) is very easy. Simply close the block valve and open the bleed valve to vent process pressure to the atmosphere. The DP transmitter is already out of service.
Putting the transmitter back into operation is also easy. Ensure that both bleed and block valves are initially closed. Then open the block valve and the transmitter is back to service.
Also Read: 5 Valve Manifold Operation
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Exelente informacion, gracias por su trabajo y aportes a la difucion del conocimiento tecnico, soy instructor de instrumentacion industrial y valoro muy util esta dibulgacion, de nuevo gracias
Translated : Excellent information, thanks for your work and gives them to the contributions to the technical knowledge, I am instructor of industrial instrumentation and I appreciate very useful, again thanks