Flowserve Swing Check Valves 2.5-24 - Manual (Page 10)

Swing Check Valves FCD ADENIM0013-00
9
2.0 CARE OF VALVE PRIOR TO INSTALLATION
(Continued)
2.3
Storage
Store valves on their shipping skids in a clean and dry area protected from the weather.
3.0 INSTALLATION INSTRUCTIONS
3.1 Rigging
When lifting the valve for installation in the line, it is important that slings of adequate size be used. The capacity
of the sling must exceed the weight of the valve. Slings should pass under the valve body. Block carefully to
prevent damage or abrasion of component parts and finishes.
3.2 Cleaning
Prior to installation remove the valve end covers and inspect for cleanliness. If any sign of foreign matter is
observed
in the valve internals, open the valve and place it on its side and flush thoroughly with water. Steam or air may
be used if water is not available but exercise caution that the high velocity does not drive debris into clearance
spaces.
3.3 Installing Valve In-line
The pipe must be properly supported and aligned with the valve. Seat leakage in valves is frequently caused by
seat misalignment resulting from excessive end movements introduced in the cold springing of the connecting
pipe. Check valves, with their automatic operation, must be installed with the flow in the proper direction. The
arrow on body should point in the normal flow direction, I.e., the direction in which flow is desired. Swing check
valves can be installed in both horizontal and vertical lines. However, in vertical lines the normal flow must be
upward and the checked flow downward. In all installations the valve must be oriented such that the hinge pin is
horizontal.
4.0 VALVE MAINTENANCE
Anchor/Darling Valves are designed to be essentially maintenance free pieces of equipment. When used in the proper
application and operated correctly they will provide reliable operation for many years. Some other maintenance
recommendations are included in the following sections for information.