NON-RISING STEM GATE VALVES
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.
在线联系供应商
Other supplier products
 |
WAFER TYPE CONCENTRIC BUTTERFLY VALVE | concentric butterfly valve for sale sewage concentric butterfly valve MstnLand wafer type concentric butterfly valve for sale are widely used in w... |
 |
CHECK VALVES | As one ofvertical check valve manufacturers, MstnLand provides high performance check valves exporter, including Swing check valve, Lifting check v... |
 |
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... |
 |
Valves Used In Mining | Valves are used daily in mining industry. Valves used in mining sometimes affect the mining safety and mineral production. Without valves for minin... |
 |
CAST STEEL BALL VALVES | As a professional cast steel ball valve suppliers, MSTNLAND has high-quality cast steel ball valvesfor sale. Welcome to contact us if needed. Th... |
Same products
 |
阀 | 卖方: 荣腾鑫诺（天津）国际贸易有限公司 | 液压阀 |
 |
Class 300 Valve | 卖方: GangYe Group Co.,Ltd. | Class 300 valves have a pressure rating of 300 pounds per square inch (psi) or 20.7 bar, allowing... |
 |
Class 3000 Industrial Valve | 卖方: GangYe Group Co.,Ltd. | Wafer Body, Full Port Design, Flanged End Class 3000 Ball Valve. A ball valve class 3000pressure-... |
 |
Class 2500 Industrial Valve | 卖方: GangYe Group Co.,Ltd. | Class 2500 valves can be used for both on-off and throttling applications. The specific valve typ... |
 |
Class 150 Valve | 卖方: GangYe Group Co.,Ltd. | globe valve class 150is a pressure rating designation defined by standards organizations, such as... |
