Butterfly Valves

Lugged, wafer and double flanged butterfly valves of all materials and seat types are easy to use and long lasting as long as they are installed and maintained correctly.

Storage Conditions

To protect the seat and seals, do not unpack the valves until they are ready for installation. By doing this you are protecting the valve from dust and debris which may eventually cause seat leakage.

Keep in a cool well ventilated space if storing for a longer period of time.

Operation

Do not use the valve at pressures above its working pressure.

If the valve is jammed in a position between open and closed check the actuator operation. If necessary remove the actuator and manually operate the valve to fault find. Remove and check valve for foreign objects if required (see maintenance).

Excessive torque from the actuator can damage the internal valve parts.

Maintenance

Cycle the valve once a month or more if it is not used regularly.

Relieve the system pressure before maintaining the valve.

To remove from pipework reverse the installation sequence.

Replace valve seat (liner) by removing the stem and disc. Press out liner and replace with new part. Reinstall the disc and stem along with seals and clips. Refit into line as in installation sequence.

If the valve is operating in a dry application (eg compressed air) ensure to lubricate the disc and seat regularly to prolong life span

For operational instructions please see each video link under products.