Gate Valve Stuffing Box

Deposits are removed in travel so nothing builds up on the seating surfaces that could cause leakage.

Gate valve stuffing box.

Stuffing box packing is allowing water to leak. The stuffing box prevents sea water from entering the boat s hull. Add an air release valve if necessary. Deep stuffing boxes are standard on gate and globe valves.

The gate of this valve is attached to a stem which goes through a stuffing box located in the bonnet. The serie 500 dampers are manufactured with an adjustable stuffing box around the blade ensuring that no leakage to the atmosphere will occur. The stuffing box is filled with a material called packing the function of which is to stop leakage. The box is a cylindrical assembly typically of bronze comprising a sleeve threaded on one end to accept adjusting and locking nuts.

Gate valve non rising spindle stuffing box design product code. Knife gate valve issues knife gates are some of the most common valves used in slurry service. The design provides extra packing for a more reliable stem seal or sufficient depth for packing with an optional lantern ring in the middle. In many small fiberglass boats for example the stuffing box is mounted inboard near the point the shaft exits the hull.

Manual wheel electric actuator pneumatic or hydraulic cylinders. Gv nr s gate valves are the most common type of valve used for isolation. 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. Deep stuffing boxes can be fitted with a split carbon or bronze bushing.

The damper can be operated in a variety of ways. The valve consists of a main body section and bonnet inside which a valve disc travels up or down the spindle by means of a disc nut. 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. 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.

Note that o rings started being used in 1952. Remove stuffing box and replace the stem o rings and the stuffing box packing. Serie 500 is a very robust construction manufactured in square or round design.