Doc No: OMM50002312
Rev: C Page 30 of 54
Subject to contractual terms and conditions to the contrar
y, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced
, disclosed, or made public in any manner prior to express written authorization by FMCTI.
10.3 Replacing Valves
1. A minimum of approximately 2 feet of clearance is required
above, below, and in front of the pump fluid cylinder to
allow valve service without removal of the fluid end. If
sufficient clearance is not available, the fluid end must be
removed as outlined in previous section and taken to a
work shop for valve service. The following procedure is
written under the assumption that sufficient clearances
exist.
2. Remove the three suction plugs (56) from the bottom of the
fluid cylinder (34).
3. Remove the six valve cover nuts (51) holding the valve
cover clamps (46) and then remove the three valve covers
(44) from the fluid cylinder.
4. The cylinder covers (41) on W11 pumps allow access for
inlet valve removal. For these pumps, remove the cylinder
covers as described in Section 10.1.
5. For ball valves, the balls are
not attached to the valve seat.
The ball can easily be
removed from the valve
assembly by lifting it out of
the open cage portion of the
valve seat. Then proceed
using the Valve Seat
Installation and Knock Out
Tool, P534695 (see picture to
the right) to remove the valve
seats from the fluid cylinder.
6. Repeat step 5 for discharge valves.
This document describes the methods for removing and installing ball
valves. For disc valves, the same procedure outlined for ball valves may
be used. Disc valve W11s have one suction valve and one discharge
valve assembly per pumping chamber that must be removed from the
fluid cylinder as a valve-and-seat assembly.
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