NON-RISING STEM GATE VALVES
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.
Cast Iron Internal Thread Non-rising Stem Gate Valve
Cast Iron Clamp Type Non-rising Stem Soft-sealing Gate Valve
Cast Iron Non-rising Stem Soft-sealing Gate Valve
Worm Gear Non-rising Stem Wedge Gate Valve
Rising Stem Gate Valve vs Non Rising Stem Gate Valve
Non Rising Stem Gate ValvesFeatures
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.
If you want to know more kinds of chemical valves, please visit our website.
在线联系供应商
Other supplier products
 |
RISING STEM VS NON RISING STEM GATE VALVE | RISING STEM VS NON RISING STEM GATE VALVE We all know that a gate valve needs to be installed to build a building, but the gate valve has two types... |
 |
LIFT CHECK VALVES | LIFT CHECK VALVES Internal Thread Lift Bottom Check Valve Cast Steel Lift Check Valve Cast Iron Lift Check Valve Cast Iron Vertical Lift Check Va... |
 |
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... |
 |
STAINLESS STEEL GATE VALVES | Stainless steel gate valves refers to the lifting movement of the opening and closing body (valve plate) driven by the valve chinastem driving seal... |
 |
SWING CHECK VALVES | A swing check valve is a simple device designed for the one-way flow of a liquid or gas. It has a disc that swings on a hinge, opening to allow flu... |
Same products
 |
RV-02 AC Electric Power Source Air Blower Cost-Effective Pressure Relief Valve | 卖方: Greentech Industry (Jinan) Co., Ltd | RV-02A pressure relief valveAir Blower pressure relief valve is installed on the inlet &outle... |
 |
RV-01A High-Pressure Aluminium for Aquaculture Environmental Protection OEM | 卖方: Greentech Industry (Jinan) Co., Ltd | RV-01A pressure relief valveAir Blower pressure relief valve is installed on the inlet &outle... |
 |
200WOG Thread Globe Valve | 卖方: Wenzhou Chenyu Valve Co., Ltd | 200WOG Thread Globe Valveis a type of valve designed to regulate or isolate the flow of liquids o... |
 |
Forged Steel Gate Valve | 卖方: Wenzhou Chenyu Valve Co., Ltd | Forged Steel Gate Valveis a robust and high-performance type ofGate Valveprimarily used for relia... |
 |
RV-01A High-Pressure Aluminium for Aquaculture Environmental Protection OEM | 卖方: Greentech International (Zhangqiu) Co., Ltd | RV-01A pressure relief valveAir Blower pressure relief valve is installed on the inlet &outle... |
