Application
For applications such as measuring flow or level using a differential pressure transducer or gauge with calibration and instrument removal facilities.
Using the 5-valve manifold
In normal operations the “isolate” valves are open while the “equalise” and “vent” valves are closed. This provides a differential reading to the gauge or transmitter.
To zero the instrument, first close both “vent”valves and the downstream “isolate” valve. Then open the “equalise” valve and adjust the zero settings on the instrument.
To remove the instrument, first close both the “isolate” valves, then open the “equalise” valve followed by opening both “vent” valves to relieve pressure between the manifold and the instrument.
Calibration option
An option provided by 5-valve manifolds which is not available on 3-valve types is connecting the “vent” port to known pressure sources to check the calibration of the instrument.
How to order
See- How to order needle valves & manifolds.
Additional Sizes
additional sizes and options are available on special request.
Please consult our sales staff for further details.