Rising Stem Gate Valve

In some systems it is necessary to be able to determine remotely if the valve is open or closed.

Rising stem gate valve.

Rising stem or os y type outside stem and screw type non rising stem type. Types of stem movement. Solid wedge is the most common widely used disk type because of its simplicity and strength. Stem nut for open stem gate valve is on its cover.

A rising stem is a type of valve mechanism in which the stem of the valve rises along with the gate disk or globe when opened. It is the proven technology for arduous process conditions including high temperature critical isolation to molecular sieve switching services. China rising stem gate valve manufacturer. When opening or closing the gate it is through the rotating of valve stem.

Outside stem and yoke gate valve 64 valve class class 125 89 class 150 41 class 200 29 class 250 3 class 300 48 class 600 15 class 800 28 view all. The stem nut is inside valve body and contact with the medium directly. All valves 14 and larger are cast with. Rising stem valves may feature static handles or wheels.

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. These valves feature 410 stainless steel rising stems and wedges and carbon steel handwheels. 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.

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. Compared with other valves gate valves have a wider range of combined applications for pressure service fluid design pressure and temperature. A valve with a solid wedge may be installed in any position and it is suitable for almost all fluids. Orbit rising stem ball valve s unique tilt and turn design reduces seal rubbing and delivers reliable performance.

For example in a fire. In rising stem type valves when the gate 8 is raised or lowered the entire stem 9 moves upward or downward through the yoke 1 as the threaded part 10 of the stem 9 threads through the yoke nut 12 on the top of the yoke 1. This gives a good visual indication of whether the valve is open or not because the raised stem is clearly visible. 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.