To properly select a valve for a new installation or upgrading of an existing installation, the following information should be considered.
1. Inlet Pressure
2. Flow Rate
3. Flow Media (I.e.– steam, air, water, etc.)
4. Desired Delivery Pressure
5. Accuracy
6. Primary Function (pressure, temperature, other)
7. Application Details
If you have a problem installation with an existing regulator, the same points should be considered to determine if the current valve is of the proper size and type.
Proper piping is important for all regulators and critical on regulators used on steam service.
Supply and discharge piping for the regulator must be sized to handle the flow rates. Most generally the discharge piping will be larger than the regulator.
A steam trap must always be installed ahead of all steam regulators to prevent condensate from forming ahead of the valve when it is closed. This trap which is missing in the majority of installations will lead to regulator failure, leaking, and water hammer problems.
Complete isolation valves (gate or ball) should be installed along with a globe valve to bypass the regulator if repairs are required. Pressure gauges should be installed on both inlet and outlet sides of the regulator to monitor proper operation.
We offer complete sales, service, and repairs on all brands of regulators.
Related Products:
back to articles

Watson McDaniel Pressure & Temperature Regulator
Watson McDaniel Air Pilot-Operated Regulating Valve
Spirax Sarco 25P
Spirax Sarco 25PE
Spirax Sarco 25BP
Spirax Sarco 25T
Spirax Sarco 25TE
Spirax Sarco 25PT
Armstrong OB2000 Diaphragm Temperature Regulator
Armstrong OB2000PT Pressure/Temperature Regulator
Armstrong GP1000 Internally Piloted Pressure Regulator
Armstrong GP2000 Externally Piloted Pressure Regulating Valve
Armstrong GP2000K Diaphragm Operated Pressure Regulating Valve
Armstrong GP2000R Back Pressure Valve
