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.
Stuffing box gate valve.
The design provides extra packing for a more reliable stem seal or sufficient depth for packing with an optional lantern ring in the middle.
Note whether the gland nose is.
Deep stuffing boxes are standard on gate and globe valves.
Loosen and retighten stuffing box bolts and nuts evenly.
If this does not stop the leakage repack the stuffing box.
If the stem of a globe valve is in good condition stuffing box leaks can usually be stopped by setting up on the gland.
Inspect all of stem gate the valve should be all the way open to inspect the entire stem gate.
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.
Look for burrs or scaling.
The stuffing box bolts and nuts may have been tightened down unevenly during assembly.
Inspect the gland the gland should be able to freely enter the stuffing box all the way.
Some factors to consider include.
The valve box may be interfering with the operating key.
If the leak persists a bent or scored valve stem may be the cause of the trouble.