Taylor-Wharton XL-55 - Manual (Page 20)

residue and foreign particles.
Valve Replacement Instructions
1. Partially thread Seat Assembly (12) (seat disc first) into large end of Bushing (13)
leaving a tang of nipple assembly exposed about 1/8 in. beyond top of Bushing.
2. Insert Seat Assembly (seat disc first) with attached Bushing, into valve body until
properly seated.
3. Place Stem Gasket (10) carefully over Stem (11) convex side facing downward.
4. Insert slotted end of Stem into valve body, making sure that slot fully engages tang of
Seat Assembly.
5. Place Bonnet over Steam and while holding square end of Stem to keep it from turning,
thread Bonnet (9) into valve body. Hold body with one wrench and using another wrench
(15/16 in. socket), tighten Bonnet to 80 ft lbf (11 kgf m) torque.
6. Install Bonnet Washers over Stem on Bonnet.
7. Place Handwheel over Stem and on Bonnet.
8. Install Seal (6) over Steam into recess of Handwheel.
9. Install Seal Washer (5) over Seal at the bottom of Handwheel recess shown.
10. With the flat side facing downward, place Retainer Washer (3) on top of Seal.
11. Align the holes of these parts and place Spring (4) over Seal.
12. Place Spring Retainer (2) over assembly as shown, keeping center hole aligned with
parts installed in steps 6-11.
13. Install Screw and Washer (1) over retainer. Tighten firmly with a screwdriver, turning
clockwise.
14. Turn Handwheel completely clockwise to close valve. Re-pressurize container and
leak check valve.