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4.3.3 Check Valve Removal & Reinstallation, Tie-bar type
1. Disconnect and Lockout the power supply to the drive motor.
2. Relieve all pressure from the piping system.
3. Take all precautions necessary to prevent contamination to the
environment and personnel exposure to hazardous materials.
4. Close the inlet and outlet shutoff valves.
5. Loosen the suction valve tie-bar bolts (4) and spring the suction
piping slightly away from the head, allowing liquid to drain. It
may be necessary to loosen a union or flange.
Caution – Process fluid may drain from the Piping. Take
necessary precautions.
6. Remove the suction check valve assembly by sliding it towards
you, holding it together as a unit. Note carefully the position of
the component parts, to assist in re-assembly.
7. Loosen the discharge valve tie-bar bolts (4) and spring the
discharge piping slightly away from the head, allowing liquid to
drain. It may be necessary to loosen a union or flange.
Caution – Process fluid may drain from the Piping. Take necessary precautions.
8. Remove the discharge check valve assembly by sliding it towards you, holding it
together as a unit. Note carefully the position of the component parts, to assist in
re-assembly.
9. Disassemble both valves and check components for wear or damage. The seats
should have a sharp edge and be free from dents or nicks. Hold a ball firmly
against the seat in front of a bright light and inspect for fit. Observation of light
between the ball and seat is cause for replacement.
10. Reassemble both valves using new parts as required. Sealing o-rings should
always be replaced.
11. Replace both valve assemblies onto the pump, taking care to ensure they are
oriented correctly, with the balls above the seats, and the seats oriented with the sharp edge up and
the chamfered edge down.
Inserting the check valve assmbly into the pump in the wrong
directiom, or having the check seat upside down, will prevent proper
seals at the o-rings, decrease pump performance, and can cause
damage to the diaphragm.
12. Carefully make sure that the check assemblies are in proper position, and tighten the four tie-bar bolts,
using a star pattern, to a torque of 6 Ft-lbs (8 N-m).
13. Retighten any unions, flanges, or other process connections that may have been loosened previously.
Figure 14: Tie Bar Style Metal
Valves
Figure 15: Metal
Valve
- PULSA GLM 1
- Safety Considerations: 2
- Table of Contents 3
- 1. Equipment Inspection 5
- 2. Installation 5
- 2.3 Piping System 6
- 3. Equipment Startup 9
- 4. Maintenance 11
- 4.1 Lubrication 12
- 4.3 Check Valves 15
- 4.5 Pump Head Removal 18
- 5. Replacement Parts 19
- 6. Troubleshooting 21
- 7. Piping Accessories 23
- 8. Dimensional Drawing 24
- NOT APPLICABLE 26
- GL310008-316 GL310010-316 27
- Policies and Procedures 28
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