Gate Valve Stuffing Box

Note that o rings started being used in 1952.

Gate valve stuffing box. Manual wheel electric actuator pneumatic or hydraulic cylinders. Serie 500 is a very robust construction manufactured in square or round design. Deep stuffing boxes can be fitted with a split carbon or bronze bushing. Gate valve non rising spindle stuffing box design product code.

The stuffing box is filled with a material called packing the function of which is to stop leakage. Stuffing box packing is allowing water to leak. Kennedy valve rotating disc gate valves clean themselves with every operation. Add an air release valve if necessary.

Water is leaking from the stuffing box area. Stuffing box hex bolt thrust washer body seat ring disc seat ring op nut hex bolt nrs stem nut nrs o ring stuffing box bonnet body hex bolt stem o rings. The serie 500 dampers are manufactured with an adjustable stuffing box around the blade ensuring that no leakage to the atmosphere will occur. Deep stuffing boxes are standard on gate and globe valves.

The design provides extra packing for a more reliable stem seal or sufficient depth for packing with an optional lantern ring in the middle. Gv nr s gate valves are the most common type of valve used for isolation. Pipe valve hydrant ul fm series resilient wedge gate valves are available in non rising stem nrs with indicator post flange piv non rising stem with awwa style stuffing box and outside screw and yoke os y with handwheel piv resilient wedge gate valves with indicator post flange have triple o ring seals non rising stems with a 2 square wrench nut and are. While some knife gates seal on the valve stem with a standard cylindrical stuffing box many seal on the gate with a rectangular stuffing box.

Remove stuffing box and replace the stem o rings and the stuffing box packing. Knife gate valve issues knife gates are some of the most common valves used in slurry service. The box is a cylindrical assembly typically of bronze comprising a sleeve threaded on one end to accept adjusting and locking nuts. The stuffing box prevents sea water from entering the boat s hull.

The damper can be operated in a variety of ways. The gate valve will not pass a pressure test. In many small fiberglass boats for example the stuffing box is mounted inboard near the point the shaft exits the hull.