Stuffing Box Gate Valve

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.

Stuffing box gate valve.

Deep stuffing boxes are standard on gate and globe valves. Inspect all of stem gate the valve should be all the way open to inspect the entire stem gate. If this does not stop the leakage repack the stuffing box. The design provides extra packing for a more reliable stem seal or sufficient depth for packing with an optional lantern ring in the middle.

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. If the stem of a globe valve is in good condition stuffing box leaks can usually be stopped by setting up on the gland. Some factors to consider include. Loosen and retighten stuffing box bolts and nuts evenly.

If the leak persists a bent or scored valve stem may be the cause of the trouble. The stuffing box bolts and nuts may have been tightened down unevenly during assembly. The valve box may be interfering with the operating key. The gland must not be set up or packed so tightly that the stem binds.

Look down the valve box to see if it is to close to the operating nut. Inspect the gland the gland should be able to freely enter the stuffing box all the way.