ITT Skotch Trifecta T4405F, Инструкции по установке, эксплуатации и обслуживанию

Страница: 14 / 41

ITT
Engineered Valves, LLC Page 14 of 24
Technical Manual No. IOT4400F Effective 8/31/2018
REV LEVEL B
Discard old Piston Gasket (Item 24) and clean surfaces of sealant.
Remove Piston Seals (Item 22) and Piston Bearing Strip (Item 23).
Remove Outlet Valve Return Spring (Item 28).
Unscrew Hex Nuts (Item 56) from the Flange Studs (Item 55) taking note of the
Warning below and slip the Bottom Flange (Item 70) out of Body Subassembly
(Item 2). Care should be taken to unscrew the nuts evenly around the bolt circle,
so Inlet Valve Spring (Item 50) does not bind during disassembly. The spring will
completely relax before the nuts are unscrewed.
WARNING
When removing the Hex Nuts (Item 56) from the Flange
Studs (Item 55), remove the nuts from the long end of the
exposed threads. Removing them from the short end will not
properly unload the spring.
Remove the Inlet Valve Return Spring (Item 50).
Grasp the Inlet Shaft (Item 75) of the Inlet Valve Subassembly and pull it out of
Inlet Seat Ring (Item 44).
CAUTION
With the removal of Inlet Valve Subassembly, it is possible
for the Outlet Valve Subassembly to fall from its seat ring.
The Outlet Valve Subassembly should be properly supported.
Remove Shaft Wiper (Item 54) and Shaft Seal (Item 53) from Bottom Flange
Subassembly. Care should be used not to scratch the bearing.
Discard old Bottom Flange Gasket (Item 52).
Remove Vent Seal (Item 84) from Inlet Valve Subassembly. There is a small
amount of retaining Loctite on the thread of the vent seal retaining screw (Item
86) Discard old Wave Springs (Item 82).