GATE VALVE, GLOBE VALVE,CHECK VALVE,BALL VALVE AND FITTINGS OF VALVES

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Ningbo
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100 kg
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1000000 kg/month

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Our company specializes in the production of gate valve, globe valve, check valve. We entered into Russia valve market since the year 2004.Current export of our Company to Russia make USD 6 million per year.


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Q:What is the difference between cut-off valve and gate valve?
Simply put, the cut-off valve is one-way, only into, do not give up, the valve is two-way
Q:What is the difference between an elastic gate valve and a rigid gate?
One is cast iron, intermediate rubber gate, one is cast steel, and the other is steel flashboard,
Q:What are the working principles of the electric gate valve?
Ordinary type electric valve should be equipped with the control box, the motor is the true story and the inversion, and in general to a trip signal signal is normally open and normally closed, closed in place are normally open and normally closed two points according to their own needs wiring, three lines and then open and close control of the line of control there are also 4 lines to control some manufacturers, as well as the valve position, some three lines connected with the potentiometer, some installed valve position transmitter is connected with two lines, and over torque protection fault signal.
Q:What is the difference between the cut-off valve and the gate valve?
What is the difference between gate valve and stop valve?:Gate valve and globe valve structure is different, the valve structure for hand wheel, with the stem rotating together to do the opening and closing movement. Valve structure is rotating handwheel, stem do lifting movement. The flow is different, the gate valve requires full open or full closed state, the cut-off valve does not need. The valve has the flow direction requirements, and the gate valve has no inlet and outlet requirements!Sealing performance comparison:Valve length is shorter than the cut-off valve, higher than the cut-off valve, the valve should pay attention to the installation of high elevation. The gate valve can be tightly closed with the sealing surface by the pressure of the medium so as to achieve the effect of not leaking.
Q:What kind of valve is gate valve? Is it different from the cut-off valve?
Gate valve is applied to the big diameter pipeline valve, the valve is generally used in small pipe diameter pipeline, their internal structure is different, the valve can not regulate the flow of water, the valve can be. If you want to understand in detail, it is recommended to take a sample of valve manufacturers to see the internal structure.
Q:Installation and operation instructions of knife gate valve
5., when installing the valve, users must reserve the necessary space for valve actuation;The wiring of the 6. driving device shall be carried out according to the wiring diagram;7. knife gate valve must be regularly maintained, shall not be arbitrarily collision and extrusion, so as not to affect the seal.
Q:What are the differences between the gate valve and the cut-off valve?
Is the gate valve opening and closing parts, RAM direction of motion perpendicular to the direction of the fluid, valve can only be fully open and fully closed, is not suitable for regulation and throttle. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used wedge gate valves form a wedge. The wedge angle varies with valve parameters, usually 5o. Wedge gate valve can be made into a whole, called the rigid gate; can also be made to produce micro deformation of ram, in order to improve its process of deviation, make up the sealing surface angle in the process, the gate is called the flexible gate. Valve closed, the sealing surface can only rely on medium pressure to seal, that is to rely on medium pressure to the gate sealing surface pressure to the other side of the seat to ensure the sealing surface seal, which is self sealing. Most of the valve is forced seal, that is, when the valve closes, to rely on external force to force the gate to the seat, in order to ensure the sealing surface sealing.A stop valve is a valve that closes the valve and moves along the center line of the valve seat. According to this form of valve movement, the valve seat opening change is proportional to the valve stroke. Because of the valve stem to open or close the trip is relatively short, but very reliable cut off function, and because changes in the valve seat and the valve stroke is proportional, is very suitable for flow regulation. As a result, this type of valve is ideal for use as a shut-off or regulator and throttling
Q:What is the wedge type gate valve wedge is what mean
It can be used on high pressure gate valve. Wedge gate and elastic wedge gate, gate and double gate. A, elastic ram. A circular groove is machined on the vertical bisector surface of the gate so that the gate plate has a certain elasticity. It is this elastic deformation, the gate is closed, the compensation gate sealing surface and the valve seat sealing surface between the wedge angle deviation, the arrival of good agreement, to ensure the sealing. Resilient gate valve sealing surface reliable. Applicable to a variety of pressure and temperature of small and medium-sized gate valve, requiring medium containing solid particles to less, in order to prevent congestion in the gate ring groove, affecting the flexibility of sealing.
Q:What are the standards for the execution of cast iron dark pole gate valves?
Three, cast iron gate valve structure features:1.. The structure is simple and compact, the design is reasonable and novel, the rigidity of the valve is very good, the passage has a large flow area, the medium is unimpeded, and the resistance is small;2., the sealing surface of the material selected carbide and stainless steel, has a reliable sealing performance, long service life;3. cast iron dark rod gate valve using graphite material for packing, easy to operate;4., can use a variety of driving methods, such as manual, electric, pneumatic, gear drive, etc.;5., the position of the two sides of the gate valve is symmetrical, so the medium can flow freely on both sides, and the installation is very convenient;6. cast iron hidden rod gate valve structure length is short, the quoted manufacturing process is good, the scope of application is very wide;
Q:What does gate valve Z41H-40 mean?
Z-- valve, 4-- connection, flange connection, 1-- structure, open bar wedge type rigid single gate valve, surfacing iron hard alloy h-- seal, 40- nominal pressure is 40 kg, which is 4.0MPa, the material is carbon steel casting

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