Stuffing Box Gate Valve

Gate valves forum manufactures mud gate valves to meet the tough demands of deep high pressure drilling applications up to 7 500 pounds per square inch psi. Look for burrs or scaling. The stuffing box bolts and nuts may have been tightened down unevenly during assembly.

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In Order To Keep The Stuffing Box Away From Low Temperature Media And Prevent Long Term Contact Damage Affecting Sealing Performance The Valve Cryogenic Globe

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Look down the valve box to see if it is to close to the operating nut.

Stuffing box gate valve.

Note whether the gland nose is. If this does not stop the leakage repack the stuffing box. The valve box may be interfering with the operating key. Inspect all of stem gate the valve should be all the way open to inspect the entire stem gate.

The design provides extra packing for a more reliable stem seal or sufficient depth for packing with an optional lantern ring in the middle. Loosen and retighten stuffing box bolts and nuts evenly. The gland must not be set up or packed so tightly that the stem binds. If the stem of a globe valve is in good condition stuffing box leaks can usually be stopped by setting up on the gland.

Deep stuffing boxes are standard on gate and globe valves. Inspect the gland the gland should be able to freely enter the stuffing box all the way. If the leak persists a bent or scored valve stem may be the cause of the trouble. Some factors to consider include.

The speaker mentioned that an ideal stuffing box contains 5 rings of packing and that deeper stuffing boxes are not preferred as only the two packing rings nearest the outside of the valve are fully compressed by the force from the packing follower. Designed to provide long service in high pressure pump and standpipe manifold systems our rugged valves created tight shutoff at every closing cycle and outperform even after long.

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