Rising Stem Gate Valve Actuator

The valve disk is threaded internally. Orbit rising stem ball valves can be equipped with perfectly matched valve linear actuators and many capabilities can be added to the basic double acting actuator. The two sealing surfaces of the most commonly used mode gate valve form a wedge.

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Compared with other valves gate valves have a wider range of combined applications for pressure service fluid design pressure and temperature.

Rising stem gate valve actuator.

The stem nut is inside valve body and contact with the medium directly. The wedge angle varies with valve parameters usually 50 and 2 52 when the medium temperature is not high. Stem nut for open stem gate valve is on its cover. According to the screw position of the stem the gate valve can be divided into rising stem gate valves and non rising stem gate valve nrs.

There is no upward movement of the stem in a non rising stem type. The advantage of this construction is that the height of gate valve remains the same so the installation requires small room and is suitable for big gate valves or. The disc travels along the stem like a nut when the stem is rotated. In this type of valve stem threads are exposed to the flow medium.

You can see the image. Available in sizes 2 through 96 our metal seated solid wedge valves are designed in accordance with awwa c500 standards as well as ansi and astm standards. Models are available with a spring return option to open or close. When opening or closing the gate it is through the rotating of valve stem.

Non rising stem gate valve or insider screw valve. All valves 14 and larger are cast with. The gate has two sealing surfaces. Manual override mechanisms also are available.

The rising stem gate valve can only be fully opened and fully closed and cannot be adjusted or throttled. Designed and manufactured for use in wastewater and sewage applications pratt gate valves are produced in both non rising stem nrs and outside screw yoke os y versions. Non rising stem gate valve.

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