Gate Valves Ductile Iron Cast Iron Manufacturing

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1.Structure of Gate Valve Description:A gate valve, also known as a sluice valve, is a valve that opens by lifting a round or rectangular gate/wedge out of the path of the fluid. The distinct feature of a gate valve is the sealing surfaces between the gate and seats are planar, so gate valves are often used when a straight-line flow of fluid and minimum restriction is desired. For extremely thick fluids, a specialty valve often known as a knife valve is used to cut through the liquid. On opening the gate valve, the flow path is enlarged in a highly nonlinear manner with respect to percent of opening. This means that flow rate does not change evenly with stem travel. Also, a partially open gate disk tends to vibrate from the fluid flow. Most of the flow change occurs near shutoff with a relatively high fluid velocity causing disk and seat wear and eventual leakage if used to regulate flow. 

2. Main Features of the Gate Valve:

• Valve body cavity using non-toxic epoxy resin,both inside and outside flashboard completely is coated with rubber

• High manufacturing accuracy

• High strength

• Environmental protection and energy saving

• Good visual effect

3. Images

 Gate Valves Ductile Iron Cast Iron  Manufacturing

 

Gate Valves Ductile Iron Cast Iron  Manufacturing

4. Gate valve Specification

Gate valve

Ductile iron gate valve

Flange Gate valve

Our company can produce all kinds of valves, If you have any inquiry, please contact us, we will offer you our best price.

1,good quality and competitive prices

2,WRAS,CE,ISO 9001 approved.

3,AKZO epoxy coating available

Flanged ends according to BS,DIN,MSS,ANSI JIS

Designed according BS,DIN,MSS,ANSI JIS

Ductile Iron or Cast Iron body, bonnet and handwheel

Cast iron wedge, NBR/EPDM coated

Stainless steel stem, epoxy coating

Test: BS,DIN,MSS,ANSI JIS

 5.FAQ

1. What is the work principle of gate valve ?

 The gate faces can form a wedge shape or they can be parallel. Gate valves are primarily used to permit or prevent the flow of liquids, but typical gate valves shouldn't be used for regulating flow, unless they are specifically designed for that purpose. Because of their ability to cut through liquids, gate valves are often used in the petroleum industry. 

2. What's are the characteristics of gate valve?

The distinct feature of a gate valve is the sealing surfaces between the gate and seats are planar, so gate valves are often used when a straight-line flow of fluid and minimum restriction is desired. The gate faces can form a wedge shape or they can be parallel

 

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Q:What does the gate valve 150# mean?
150Lb (American Standard pressure value corresponding to the PN2.0)
Q:Does the relief valve have a gate valve?
The pressure reducing valve group is composed of an adjustable pressure reducing valve, a pressure gauge, a copper valve, a Y filter, a rubber soft joint, a spring pressure gauge, a pressure gauge, an air valve, a pressure gauge and a bent pipe.
Q:The difference between gate valve and butterfly valve, as well as cut-off valve,
Valve is closed parts (RAM) along the vertical axis of the mobile channel valve in the pipeline, used primarily as a medium cut that open and close, generally do not have to do with traffic regulation, it can be used for low temperature and low pressure can also apply to high temperature and high pressure, and according to the different valve material for different media. In various types of valves, gate valve is the most widely used.Advantages: low fluid resistanceSmall torque required for opening and closingYou can use the ring road in which the medium flows in the two direction, that is to say, the medium is free of flowWhen fully open, the sealing surface is less eroded by the working medium than the cut-off valveThe structure is simple and the manufacturing process is betterThe structure length is shortDisadvantages: the overall size and opening height are larger, the space required for installation is also largerIn the process of opening and closing, there is relative friction between the sealing surfaces, and wear more easily, and even cause friction at high temperatureGeneral gate valve has two sealing pairs, to the processing, grinding and maintenance increased the number of difficultiesLong opening and closing time;
Q:What is the difference between the model z81x-16q and z81x-16c of the groove gate valve?
Not 16qIs 16p, the former body is stainless steel, and the latter body is carbon steel
Q:Gate valve z11h/y-16 what does that mean?
Product Name: internal thread gate valveItem number: Z11HProduct specification: DN15-50Product pressure: 1.6MPa-2.5MPaMaterial: cast iron, cast steel, stainless steelInternal thread gate valve nominal pressure 2.5Mpa, applicable temperature range -20-232-350, applicable medium: water, oil, gas and certain corrosive liquid (W.O.G), thread type G.NPT.BSPT.BSP.DIN259/2999.
Q:What is gate valve (with force transfer joint)?
Flange valve is equipped with a force expansion joints, easy installation
Q:What is the gate valve for the DN65 hydrant?
DN150, of course. Ask me about fire protection
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:Z45T-10 what kind of material is the gate valve?
Cast iron, sealed with copper alloy inside. Shanghai Yu Cheng fluid on the professional production of this thing,
Q:What is the wedge type gate valve wedge is what mean
B. wedge type single gate, it is the whole wedge gate. In the process of opening and closing the sealing surface is prone to scratches, easy to make the temperature change gate wedge live. It is a gate used for normal temperature, medium temperature and various pressures. C. wedge double plate, which is composed of two gates composed of spherical top hinged into wedge-shaped gate. The advantage is that the accuracy of the cover angle is lower; the sealing surface of the gate can be compensated by adding shim at the top of the seal; the temperature changes are not easy to cause the phenomenon of the card master, nor should it be abraded. Because the gate is movably connected and has more parts, it is easy to bond in the viscous medium and affects the sealing. Especially when the upper and lower baffles are corroded all the year round, the flashboard falls off arbitrarily. It is usually used for water, steam and gas pipelines.

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