DeZurik KGC-BD Руководство по эксплуатации - Страница 11
Просмотреть онлайн или скачать pdf Руководство по эксплуатации для Сантехническая продукция DeZurik KGC-BD. DeZurik KGC-BD 13 страниц. Bi-directional knife gate valves with guides
Печатать страницу2-36" KGC-BD BI-DIRECTIONAL KNIFE GATE VALVES WITH GUIDES
Reassembling Valve
1. Replace the packing gland (A4), bolts (A5), washer (A6) and nuts (A7). Tighten the nuts evenly
and finger tight, plus 1/2 turn.
2. Reconnect the stem to the gate with the two screws and nuts.
3. If the actuator is a powered actuator, reconnect power to the actuator.
4. Pressurize the pipeline and inspect packing for leakage.
5. If packing leaks, tighten the adjustment nuts on top of the packing gland. Tighten the nuts evenly
and gently - just enough to stop the leak. Over tightening will cause excessive operating forces,
and will decrease the life of the packing.
Replacing the Seat
See Figure 1 for component identification.
If seat replacement is required, contact DeZURIK for assistance.
Replacing the Gate
See Figure 1 for component identification.
WARNING!
Pipeline pressure can cause personal injury or equipment damage. Relieve
pipeline pressure before removing gate stem and packing gland nuts.
1. Relieve the pressure in the pipeline and close the valve.
WARNING!
Accidental operation of power actuator can cause personal injury or equipment
damage. Disconnect and lock out power to actuator before servicing.
2. If the actuator is powered, disconnect and lock out power to prevent accidental operation of the
actuator.
3. Remove the pipeline flange bolts, and remove the valve from the pipeline.
4. Remove the actuator, actuator yoke, packing gland (A4), and packing (A2) from the valve. Re-
move and inspect anti-extrusion guides (A9). Replace if damaged.
5. Remove and inspect the gate (A3). If the gate appears to be scratched or galled due to too-long
flange bolts in the chest area of the body, check for body damage in the tapped flange holes and
within the chest cavity. Carefully check the body for damage. Repair or replace the body, as
appropriate.
6. Inspect the seat components.
7. Contact DeZURIK if seat replacement is required.
8. Place the new gate (A3) in the body, in the fully closed position.
9. Replace or reinstall the packing (A2) as described in "Installing the New Packing".
10. Replace the yoke and actuator on the valve.
July 2018
Page 11
DeZURIK
D11050