Non rising stem gate valve drawingis also called rotary stem gate valve (also called non rising stem wedge gate valve). The valve stem nut is set on the gate, and the handwheel rotation drives the valve stem to rotate, so as to lift the gate. Generally, there are trapezoidal threads at the bottom end of the valve stem. Through the thread at the bottom end of the valve and the guide groove on the valve disc, the rotary motion is changed into linear motion, that is, the operating torque is changed into the operating thrust. When the non rising stem gate valve is opened, when the lifting height of the ram is equal to 1:1 of the valve diameter, the fluid channel is completely unblocked, but in operation, this position cannot be monitored. In actual use, the apex of the valve stem is used as the mark, that is, the position that can not be opened is used as its full open position. In order to consider the lock phenomenon of temperature change, usually in the open to the top position, and then back 1 / 2 ~ 1 turn, as the full open valve position. Therefore, the full open position of the valve is determined by the position of the RAM (i.e. stroke).

Custom Types of Non-rising Stem Gate Valves for Sale

As one of the most professional non rising stem gate valve manufacturersin China, Mstnland provides different kinds of non-rising stem gate valves for customers to choose from.

Rising Stem Gate Valve vs Non Rising Stem Gate Valve

Non Rising Stem Gate Valves Features

The advantages of non rising stem gate valves: the height of the gate valve always remains unchanged, so the installation space is small. It is suitable for gate valves with large diameter or limited installation space. This kind of structure should be equipped with opening and closing indicator to indicate the opening and closing degree.

The disadvantage of non rising stem gate valves: the stem thread is not only unable to be lubricated, but also directly subject to medium erosion, easy to damage.

Non Rising Stem Gate Valves Selection

Non rising stem gate valves can use wedge-shaped plugs or parallel plates. Plugs usually seal both the up and downstream sides of the valve while plates usually only seal on the upstream face. Wedges can take on a variety of design alternatives that reduce or accommodate wear of the sealing surfaces. Although the advantage of gate valves is their reduced head loss when open compared to globe valves, they are not useful for throttling and may not produce the positive shut-off that globe valves provide. Non rising stem gate valves are used in wastewater plants, power plants, and process plants for shut-off and for isolating service.

As one of gate valves manufacturers, we will do our best to meet all the needs of customers.

Send product request

To: MSTN International Technologies Company
Your E-mail:
Message text:

Send to other suppliers

Other supplier products

GATE VALVES As a trustworthy gate valves supplier in China, MstnLand provides high performance different types of gate valves, mainly include bolted bonnet wed...
CAST IRON BALL VALVES CAST IRON FLANGED BALL VALVE MstnLand's series of Cast iron ball valves is used for opening and closing of pipeline with non-corrosive medium. ...
BRASS BALL VALVES Brass ball valves refer to ball valves made of brass material, namely the valve body is brass. Brass is the alloy that is made up of copper and zin...
CAST IRON FILTER Cast iron filteris an indispensable device on the pipeline of conveying medium. It is usually installed at the inlet end of pressure reducing valve...
CHECK VALVES CHECK VALVES As a vertical check valve upward flowmanufacturer, MstnLand provides high performance check valve exporter, including Swing check val...
All supplier products

Same products

Check Valve 10 Inch
Check Valve 10 Inch Seller: GangYe Group Co.,Ltd. A lift check valve is a fluid control device that has components such as a valve body, piston, sp...
Check Valve
Check Valve Seller: GangYe Group Co.,Ltd. Customers can request Gangye to produce 1/2inch-40inch, 150LB-1500LB cast or forged steel lift ch...
CF8 Valve
CF8 Valve Seller: GangYe Group Co.,Ltd. CF8 valveis a specific material designation used in valve manufacturing. CF8 is a cast version of...
CF8M Valve
CF8M Valve Seller: GangYe Group Co.,Ltd. CF8M Valve Meaning CF8M is a widely used material designation in the valve industry, referring t...
CF3M Material Valve
CF3M Material Valve Seller: GangYe Group Co.,Ltd. CF3M material is a specific material designation used in valve manufacturing. CF3M 316Lis a cast ...