1. Define the valve function
Decide whether the valve is needed for isolation, non-return, regulating flow, pressure control, draining or another specific function.
2. Confirm nominal size
Match the valve to the pipeline size and verify whether a reduced or full-bore arrangement is required.
3. Check pressure rating
The valve pressure rating must suit the system operating and test pressure.
4. Confirm end connections
Threaded, flanged, compression and other connections must match the adjoining pipework and project specification.
5. Identify the media and environment
Water quality, temperature, corrosion exposure and installation environment can influence material and seal selection.
6. Consider operation and control
Manual handwheels, levers, actuators, pilots and automated controls suit different operational requirements.
Use this guide to prepare your enquiry. Final product selection should be checked against the actual system duty, installation conditions and project specification.