Replacing Check Valves - Haskel Q-Drive QGD Series Installation, Operation And Maintenance Manual

6. After you replace the last tie rod, tighten each nut by hand.
7. Using the tightening sequence, torque each nut on the end cap side.
8. Check the torque on the drive side; 200 ft-lbs (271 Nm).

Replacing Check Valves

To replace a check valve, replace the entire check valve assembly.
Pay attention to the existing inlet and outlet ports.
1. Use an adjustable wrench to loosen the check valve.
2. Remove the check valve.
3. Open the replacement kit for check valves. Locate the IN check valve.
4. Install the IN check valve so that it connects to the IN end cap.
5. Install the OUT check valve so that it connects to the OUT end cap.
6. Tighten the assemblies. Apply torque of 50 ± 5 ft-lbs (68 ± 7 Nm)
Q-Drive Installation, Operation, and Maintenance Manual
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