Flowserve 800 Piston Lift Check Valve User Manual

Page 5

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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.

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