Check valve maintenance manual

The distribution system consists of solid PVC 12 inch water mains; 8, 6, 4, and 3 inch branches, and 2 inch service connections complete with isolation valve, backflow check valve, and water meter. Isolation valves are located on the downstream side of all branched tees. 6 inch flush valves are located at appropriate sites in the system. will open the valve, and any attempt by the flow to reverse will close the valve completely. The check valve typically does not require any outside force or signal to operate properly. Check valves allow flow in one direction only. DESCRIPTION This . Installation, Operation and Maintenance Manual 4 DISTR IB UTED VALVE S Vertical installation: When installing the swing check valve in vertical piping, only install the valve with the arrow mark on the body pointing in the upward direction. Flow upward through the valve will cause the clapper to swing open.

How to Maintain a Check Valve. For the proper maintenance of your installed check valve, it is always best to follow the recommendations of the manufacturer especially where repairs or replacements are involved. This is because different products are made of different materials and parts; and therefore, must be maintained differently. Repair cards that list the date, scope, and details of all work done on plant systems. An example of a repair card is shown in Appendix F. A well organized filing system where all equipment cards, preventative maintenance cards, repair cards, and operations manuals are kept updated for future reference. will open the valve, and any attempt by the flow to reverse will close the valve completely. The check valve typically does not require any outside force or signal to operate properly. Check valves allow flow in one direction only. DESCRIPTION This manual covers all CRANE® bolted bonnet valves.

Wafer Check Valve Installation, Operation and Maintenance Manual 1. Introduction The design of this type of check valve has good structures and appearance. The discs open under the flow 2. Purposes This type of valve is widely used in petrochemical ad general industrial pipelines for preventing. Keep this manual in a convenient place for your valve operators’ easy access. Document No.: KE This manual applies to the KITZ gate, globe and check valves made of carbon steel, low alloy steel, stainless steel and nickel based alloy. This manual is prepared for manual valve operation. For electric or pneumatic valve operation, refer to the operation manual prepared by the manufacturers of relevant valve actuators. The distribution system consists of solid PVC 12 inch water mains; 8, 6, 4, and 3 inch branches, and 2 inch service connections complete with isolation valve, backflow check valve, and water meter. Isolation valves are located on the downstream side of all branched tees. 6 inch flush valves are located at appropriate sites in the system.