Flowserve 1878 Piston Check Valve - Manual (Page 5)

1878 Piston Check Valves FCD ADENIM0005-00
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4.0 Test Conditions
(Continued)
4.2 Each valve, supplied with resilient seated discs, received the following hydrostatic tests:
4.2.1 A low-pressure water seat test at 50 psig for containment isolation valves.
5.0 Operating Precautions And Limitations
5.1 Maximum hydrostatic test pressure shall not exceed the values imposed by the ASME Code, Section III.
6.0 Installation Instructions
6.1 Lifting and Handling Requirements and Limitations
6.1.1 Good judgement should be exercised in selecting a lifting device that will safely support the unit's weight.
6.1.2 Remove the end covers.
6.1.3 Remove any blocks or heavy paper that might have been used to keep the disc from moving during
shipment.
6.2 Installation
6.2.1 Although the valves have been shipped in a clean condition, prior to installing the valves, examine the lines
and the valve ports for foreign matter and clean them thoroughly if they have been exposed to the
elements. (BEFORE CLEANING IN THIS FASHION, CHECK AT THE SITE TO SEE IF A SPECIFIC
CLEANING PROCEDURE SHOULD BE FOLLOWED.) Flush the valves out with water if possible;
otherwise blow them out with air or steam.
In performing this cleaning procedure, the ports should be vertical to assure complete removal of all matter
which might have accumulated during storage.
6.2.2 Ensure that there is no line sag at the point of installation. Eliminate any pipeline deviation by the proper
use of pipeline hangers or similar device.