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

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ITT
Engineered Valves, LLC Page 19 of 24
Technical Manual No. IOT4400F Effective 8/31/2018
REV LEVEL B
Initially tighten the flange nuts in a crisscross pattern until snug. Final torque the nuts
to 200 ft-lb in a crisscross pattern and recheck.
Lubricate the solenoid mounting O-Ring with a suitable o-ring lubricant and place
on the actuator top cap. Mount the solenoid with quick exhaust subassembly to
the actuator top cap using screws and lock washers.
After reassembly, the valve and switches should be tested per the following
procedures in Sections VI and VII
VI. LEAK TESTING
It is necessary to leak test each block valve and the vent valve individually to properly
qualify the status of each seal. The valves are named in accordance to their position and
function within the valve system.
A. Inlet Valve
1. Verify the valve is in the closed position.
2. Seal the outlet of the valve.
3. Pressurize the inlet with a maximum of 50 psig clean dry air, while
monitoring the leak rate from the vent port. FM specifies a leak rate of 24
in
3
/hr (400 cc/hr) or less.
B. Outlet Valve
1. Verify the valve is in the closed position.
2. Seal the inlet side of the valve.
3. Connect a suitable leak testing device to the outlet.
4. Pressurize the vent port with a maximum of 50 psig clean dry air, while
monitoring the leak rate from the outlet valve. FM specifies a leak rate of
24 in
3
/hr (400 cc/hr) or less.