DeZurik KGC ES Скачать руководство пользователя страница 12 | Manualshive

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DeZurik KGC ES Скачать руководство пользователя страница 12

Seat Replacement

Continued

Reassembling the Valve

1. Reassemble the gate (A3) in the body, with the beveled edge facing away from the resilient seat.

See Figure 4.

2.  Place the gate in the fully closed position.
3.  Reassemble the packing, as described in “Installing New Packing”.
4.  Reassemble the packing gland (A4), washers (A6), nuts (A7) and bolts (A5). Tighten the nuts

evenly to finger tight, plus 1/2 turn.

5.  Reassemble the yoke and actuator on the valve.
6.  Reconnect the stem to the gate with the two screws and locknuts.
7.  Reassemble the pipeline flange and flange bolts, or reassemble the valve in the pipeline if the

valve was removed. Refer to the requirements in the “Installation” section.

8. If the actuator is a powered actuator, reconnect power to the actuator.
9. Pressurize the pipeline and inspect the valve for leaks.
10. If the packing leaks, tighten the adjustment nuts (A7) on top of the packing gland. Tighten the nuts

evenly and slowly, just enough to stop the leakage. Over tightening will cause excessive operating
forces, and will decrease the life of the packing.

Replacing the Gate

See Figure 2 for component identification.

1. Relieve the pressure in the pipeline and close the valve.

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.
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 seat for damage. Repair or replace the body, as appro-
priate.

D10411

Page 12

June 2019

DeZURIK

2-24” KGC ES or HD KNIFE GATE VALVES

WARNING!
Pipeline pressure can cause personal injury or equipment damage. Relieve pipe-
line pressure before removing gate stem and packing gland nuts.

WARNING!
Accidental operation of power actuator can cause personal injury or equipment
damage. Disconnect and lock out power to actuator before servicing.

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Содержание KGC ES

Страница 1: ...DeZURIK Inc Sartell Minnesota USA Phone 320 259 2000 www dezurik com info dezurik com DeZURIK 2 24 50 600mm KGC ES or HD Knife Gate Valves Instruction D10411 June 2019 ...

Страница 2: ...ion during shipment however items can be damaged in transport Carefully inspect the unit for damage upon arrival and file a claim with the carrier if damage is apparent Parts Replaceable wear parts are listed on the assembly drawing These parts can be stocked to minimize downtime Order parts from your local DeZURIK sales representative or directly from DeZURIK When ordering parts please provide th...

Страница 3: ...stment 7 Drawings 8 Packing Replacement 9 Removing the Old Packing 9 Installing the New Packing 10 Reassembling the Valve 11 Seat Replacement 11 Reassembling the Valve 12 Replacing the Gate 12 Purge Port Option 13 Troubleshooting 15 DeZURIK 2 24 KGC ES or HD KNIFE GATE VALVES June 2019 Page 3 D10411 ...

Страница 4: ...ve body or for 2 through 12 valves a sling can be strapped around the top of the valve body For valves with bevel gear actuators a sling or chain can a wrapped around the bevel gear actuator body between the mounting plate and the input shaft housing This would be in conjunction with lift ing from the valve body as well See Figure 1 For valves with pneumatic cylinder actuators a sling can be wrapp...

Страница 5: ...bevel gear input shaft or on the valve s threaded stem See Figure 4 For valves with pneumatic cylinder actuators wrap slings around the top of each leg Use caution to not bump dent or damage the cylinder tube and avoid any side load on the cylinder piston rod DO NOT utilize the cylinder tie rod ends to lift See Figure 5 For valves with handwheel or chainwheel actuators wrap slings or chains around...

Страница 6: ... tightened Align the mating pipeline flanges Select the length of the flange bolts so that the bolts used in the blind holes near the chest area of the valve do not bottom out when tightened We recommend using studs with nuts in the blind holes Tighten the flange bolts evenly in a crisscross pattern Refer to Table A for recommended flange bolt stud torques Note Torque ranges are based on ASME Pres...

Страница 7: ...to the Actuator Instructions for lubrication requirements for the actuator Packing The gate packing is contained and compressed by the packing gland See Figure 2 for component identification Note The packing gland is slightly loosened prior to shipping This is done to increase the life of the packing during extended storage Adjustment If packing leaks tighten the adjustment nuts on top of the pack...

Страница 8: ... 8 June 2019 DeZURIK 2 24 KGC ES or HD KNIFE GATE VALVES Drawings Removable Seat Detail Bolt A5 Nut A7 Washer A6 Gate A3 Packing Gland A4 Packing A2 Packing Cord A8 if supplied Packing A2 Anti Extrusion Ring A9 if supplied Body A1 Body A1 Seat A10 ...

Страница 9: ...n position 4 Remove the gland nuts A7 bolts A5 and packing gland A4 5 Remove the used packing A2 anti extrusion ring A9 if supplied and packing cord A8 if sup plied from the packing chamber June 2019 Page 9 D10411 DeZURIK 2 24 KGC ES or HD KNIFE GATE VALVES WARNING Pipeline pressure can cause personal injury or equipment damage Relieve pipe line pressure before removing gate stem and packing gland...

Страница 10: ...the rings one at a time with the ends together but not overlapped Note Stagger the joints on the long side of the packing chamber For packing rings we recom mend using a square ended wood or plastic tool driven by a hammer or mallet Do not use a sharp tool to pack the rings 4 For packing systems with the packing cord A8 assemble and pack one row of packing A2 and then insert the packing cord A8 As...

Страница 11: ...he side of the valve body opposite the word SEAT As an alternative remove both flanges and remove the valve from the pipeline 5 Remove the actuator yoke and actuator from the valve 6 Remove the gland nuts A7 washers A6 and packing gland A4 7 Remove the gate A3 from the body 8 Remove the packing A2 from the packing chamber 9 Remove the seat Push the top of the removable seat A10 toward the center o...

Страница 12: ...kage Over tightening will cause excessive operating forces and will decrease the life of the packing Replacing the Gate See Figure 2 for component identification 1 Relieve the pressure in the pipeline and close the valve 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 pipelin...

Страница 13: ...ressurize the pipeline and inspect the valve for leaks 15 If the packing leaks tighten the adjustment nuts A7 on top of the packing gland Note Tighten the nuts evenly and slowly just enough to stop the leakage Over tightening will cause excessive operating forces and will decrease the life of the packing Purge Port Option When purge port options are ordered as illustrated the intent is that the in...

Страница 14: ...9 DeZURIK 2 24 KGC ES or HD KNIFE GATE VALVES Figure 5 Purge Port Sizes and Locations Purge Port Options VALVE SIZE INCH MM A 2 50 1 4 3 80 4 100 5 125 6 150 3 8 8 200 10 250 12 300 14 350 1 2 16 400 18 450 3 4 20 500 24 600 ...

Страница 15: ...lace packing Packing leaks and gate is galled Packing is worn or torn Replace packing and gate check seat for damage Valve leaks when fully closed with no evidence of galling on gate Seat is worn or torn Replace seat Valve leaks when fully closed and gate is galled Seat is worn or torn Replace gate and seat June 2019 Page 15 D10411 DeZURIK 2 24 KGC ES or HD KNIFE GATE VALVES ...

Страница 16: ...ll be the only effective guarantee or warranty binding on Seller despite anything to the contrary contained in the purchase order or represented by any agent or employee of Seller in writing or otherwise notwithstanding including but not limited to implied warranties THE FOREGOING REPAIR AND REPLACEMENT LIMITED WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES OBLIGATIONS AND LIABILITIES INCLUDING ALL W...

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