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Summary of Contents for DeZurik KGC-BD
- Page 1 DeZURIK 2-36” (50-900mm) KGC-BD BI-DIRECTIONAL KNIFE GATE VALVES WITH GUIDES D11050 Instruction July 2018 DeZURIK, Inc. Sartell, Minnesota USA | Phone: 320-259-2000 | www.dezurik.com | info@dezurik.com...
- Page 2 Safety label(s) on the product indicate hazards that can cause injury or death. If a safety label becomes difficult to see or read, or if a label has been removed, please contact DeZURIK for replacement label(s). Personnel involved in the installation or maintenance of valves should be constantly alert to potential emission of pipeline material and take appropriate safety precautions.
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Page 3: Table Of Contents
DeZURIK 2-36” KGC-BD BI-DIRECTIONAL KNIFE GATE VALVES WITH GUIDES Table of Contents Description Handling Installation Operation Lubrication Packing Adjustment Drawings Packing Replacement Removing the Old Packing Installing the New Packing Reassembling the Valve Replacing the Seat Replacing the Gate Troubleshooting... -
Page 4: Description
2-36” KGC-BD BI-DIRECTIONAL KNIFE GATE VALVES WITH GUIDES Description KGC-BD knife gate valves have a stainless steel body, gate and a resilient perimeter seat. The KGC- BD knife gate valve is available in 2-36" (50-900mm) sizes. A choice of several actuators and acces- sories is available. - Page 5 DeZURIK 2-36” KGC-BD BI-DIRECTIONAL KNIFE GATE VALVES WITH GUIDES continued Handling For valves with handwheel actuators, a sling or chain can be wrapped through the rim of the hand- wheel. For chainwheel actuators, a sling can be wrapped in the area between the yoke/legs and the chainwheel/guide assembly.
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Page 6: Installation
Normal Installations The bi-directional KGC-BD knife gate valve can be oriented either way in the pipeline. The perimeter seat in the valve will seal the valve in the closed position in both directions. -
Page 7: Operation
DeZURIK 2-36” KGC-BD BI-DIRECTIONAL KNIFE GATE VALVES WITH GUIDES Operation The gate in the valve is positioned by the valve actuator. The actuator moves the gate over the valve port in the closed position, and withdraws the gate from the port in the open position. Refer to the Actuator Instructions for adjustment and maintenance requirements for the actuator. -
Page 8: Drawings
DeZURIK 2-36” KGC-BD BI-DIRECTIONAL KNIFE GATE VALVES WITH GUIDES Drawings Bolt (A5) Nut (A7) Washer (A6) Gate (A3) Packing Gland (A4) Packing (A2) Packing Cord (A8) (if supplied) Packing (A2) Anti Extrusion Guide (A9) Body (A1) Seat (A10) Body (A1) Seat Detail Figure 1—Component Identification... -
Page 9: Packing Replacement
DeZURIK 2-36” KGC-BD BI-DIRECTIONAL KNIFE GATE VALVES WITH GUIDES Packing Replacement Removing the Old Packing 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. -
Page 10: Installing The New Packing
2-36” KGC-BD BI-DIRECTIONAL KNIFE GATE VALVES WITH GUIDES Installing the New Packing Packing (A2) strip length and quantity are shown in Table B. DeZURIK provides extra packing in their packing kits, but do not try to put more packing into a layer than shown in Table B. -
Page 11: Reassembling The Valve
DeZURIK 2-36” 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. -
Page 12: Troubleshooting
Replacing the Gate 11. On KGC-BD valves, powered actuators should be set-up to avoid excessive compression of the perimeter seat when closing the valve. To accomplish this, have the cylinder actuator fully ex- tended and the clip holes aligning with the gate when it is fully down into the valve. Then, retract the actuator and thread the clip outward two revolutions. - Page 13 If you use metric fasteners with ASME Class 150/300 bolt holes and flange bolt patterns, you do so at your sole risk and any liability associated with such use shall not be the responsibility of DeZURIK, Inc. In addition to the foregoing, DeZURIK’s Manufacturer’s Conditions apply.
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