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

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ITT
Engineered Valves, LLC Page 16 of 24
Technical Manual No. IOT4400F Effective 8/31/2018
REV LEVEL B
Upon disassembly, all sealing and bearing surfaces, including metal back-up
seats, should be inspected for nicks or other surface finish damage. Damaged
items should be replaced. Prior to reassembly, scrape any remaining gasket
material from mating surfaces. Wire brush and clean threads of retaining Loctite.
Clean gasket surfaces with a good quality solvent.
C. Reassembly
Bottom Flange Subassembly
Lubricate Shaft Wiper (Item 54), Shaft Seals (Item 53) and sealing surfaces in
Bottom Flange Subassembly (Item 70 and Item 71) with a suitable lubricant, such
as, Dow Corning 55. Install Shaft Wiper (Item 54) and Shaft Seals (Item 53) in
Bottom Flange Subassembly (Item 70 and Item 71). Note the orientation of wiper
and seal in Detail A of drawing 117923.
Inlet Valve Subassembly
Use Loctite® 222 and recommended primer on cap screws (Item 80) that hold
Seal (Item 78) and retainer (Item 79). Uses Inlet Seat Ring (Item 44) as guide to
set Seal (Item 78) and ensure Seal (Item 78) is concentrate on Inlet Valve
Subassembly.
Stack the three separate Vent Wave Springs (Item 82) on top of one another, in a
nested fashion. Ensuring the lap joint of the wave springs is staggered. Slide the
wave springs (Item 82) and spring retainer (Item 83) over the Vent Post (Item 76)
of the Inlet Valve Subassembly. Lay Vent Seal (Item 84) and Seal Retainer (Item
85) on top of Vent Post. Uses Loctite® 242 and recommended primer on hex
head cap screw (Item 86) and secure Vent Seal (Item 84) in place.
Outlet Valve Subassembly
Uses Loctite® 222 and recommended primer on cap screws (Item 95) which hold
Seal (Item 93) and Retainer (Item 94) in place. Uses Outlet Seat Ring (Item 36) as
guide to set Seal (Item 93) and ensure Seal (Item 93) is concentrate on Outlet
Valve Subassembly.
Spring Bucket Subassembly
Lubricate O-ring (Item 64) with sealing surfaces, of Spring Bucket (Item65) &
Spring Guide (Item 66), with suitable lubricant, such as Dow Corning 55. Apply
antiseize to the Spring Guide threads. With O-ring in place, thread the Spring Guide
onto the Spring Bucket until it is fully seated and tight. Lubricate Vent Shaft Seals
(Item 30) with a suitable lubricant, such as, Dow Corning 55. Install Vent Shaft
Seals (Item 30) in Spring Bucket Subassembly. Note the orientation of the seals in
Spring Bucket Subassembly; refer to drawing 117923 Detail B.