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.

Другие товары поставщика

	REGULATING VALVES	REGULATING VALVES Pressure self regulating valveare classified on the basis of their nominal capacity as medium-flow, small-flow, and microflow va...
	CAST IRON BALL VALVES	CAST IRON FLANGED BALL VALVE MstnLand's series of Cast iron ball valve chinais used for opening and closing of pipeline with non-corrosive medium....
	CAST IRON GATE VALVES	MstnLand, as a professional cast iron gate valves suppliers, provides high performance gate valve products, mainly include bolted bonnet wedge gate...
	FULLY WELDED BALL VALVES	MstnLand's series of fully welded ball valvescan be used to put through or shut off the flow of non-corrosive medium, such as water (≤200℃), ste...
	Industrial Valves Products	As a China valve supplier, China valve manufacturer, MstnLand provides industrial valves selection and procurement solutions for our clients with o...

Похожие товары

	"High-reliability Support ring Y10-4 for power station	Продавец: DONGFANG YOYIK (DEYANG) ENGNIEERING CO; LTD	"High-reliability Support ring Y10-4 for power station Deyang YOYIK have power plant professional...
	"Wear Resistance dn50 globe valve WJ25-F1.6P for thermal power plant	Продавец: DONGFANG YOYIK (DEYANG) ENGNIEERING CO; LTD	"Wear Resistance dn50 globe valve WJ25-F1.6P for thermal power plant YOYIK professional productio...
	High-efficiency Superheater outlet plug valve SD61H-P61305V SA-182 F92 for power generation	Продавец: DONGFANG YOYIK (DEYANG) ENGNIEERING CO; LTD	"High-efficiency Superheater outlet plug valve SD61H-P61305V SA-182 F92 for power generation Deya...
	Automated Sealing gasket for corrugated pipe shut-off valve KHWJ25F3.2P for power station	Продавец: DONGFANG YOYIK (DEYANG) ENGNIEERING CO; LTD	"Automated Sealing gasket for corrugated pipe shut-off valve KHWJ25F3.2P for power station Is a m...
	Class 1500 LB gate valve	Продавец: China LiCB AC DC EV Charger Co., Ltd	Product Name: Low-EmissionPacking Setfor Class 1500 LB API 6D Gate ValveModel: M600Size: ID 68 mm...