Gate Valve Ductile Iron Cast Iron High Quality

Gate Valve Ductile Iron Cast Iron High Quality

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 100 pc

Supply Capability:: 20000 pc/month

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Specification

Material:

Cast Iron

Pressure:

High Pressure

Temperature of Media:

Normal Temperature

Power:

Hydraulic

Media:

Water

Connection Form:

Flange

OD（Outer Diameter: inch）:

110

Size(inch):

DN40-DN80

Pressure（LB）:

230

Net Weight (kg):

11kg

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.

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
3.Images

4.Gate Valve Specification
Operating temperature: -20 °C ≤ t ≤ 135 °C
Stem: non-rising stem
Body material:Brass/Gray Cast Iron
Connection:flanged
1.Reliable sealing
2.Good performance
3.Easy to open and close
4.Small volume
5.FAQ
1.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.

2.What is the structure?

Bonnets provide leakproof closure for the valve body. Gate valves may have a screw-in, union, or bolted bonnet. Screw-in bonnet is the simplest, offering a durable, pressure-tight seal. Union bonnet is suitable for applications requiring frequent inspection and cleaning.

Q: What are the specifications of the gate valves? Does the work pressure need to be marked separately?: According to domestic valve model standards, the valve model is by the valve type, gate valve drive mode, gate valve connection, gate valve structure, sealing material, valve body material code to indicate.1, gate valve type code named Z;2, gate valve drive mode code by letters, common 2- electric hydraulic, 9- electric, 6- pneumatic, 5- bevel gear drive, 3- turbo worm; manual do not need to write out;3, gate valve connection form code with letters to indicate, 1- internal thread, 2- external thread, 4- flange type, 6- welding, 7- pairs clamp type, 9- clamp, 0- card sleeve;4, the valve structure of code, 0- flexible wedge, 1- rod single wedge gate valve, 2- rising stem wedge gate valve, 3- parallel single gate valve, 4- parallel double gate valve,

Q: Soft sealed gate valve and hard sealing gate valve which good?: If the caliber, material and pressure levels are the same, the current market price is still soft sealed gate valve, about 20-30%.

Q: How big valves and fittings need flange installation, such as gate valves, DN50, DN80 and the like?.: See, you choose 100 of the pressure is not high, you can not flange

Q: Which is more expensive, bronze gate valve or brass gate valve?: The advantage of casting method is more obvious. The casting of stainless steel is much more difficult than that of brass.

Q: What does the gate valve 150# mean? Is it stress PN? What's that, PN16 or?It's better to have some specific links, thanks!: 150Lb (American Standard pressure value corresponding to the PN2.0)

Q: What are the structural differences between parallel and wedge valves?: The double gate is pushed aside so that the sealing surface of the valve gate is tightly sealed with the valve body. These double gate parallel gates are mostly used on low pressure pipelines such as small pipelines. Parallel gate valves are also available with single gates, but are rare.That the sealing surface has a certain angle with the vertical center line, bearing higher medium temperature valve, angle the greater the possibility to reduce the temperature when wedged gate rice.Wedge gate valve single, double all.

Q: Generally, how big is the diameter of the installation flange plate gate valve?: Under normal circumstances:Flanged gate valves for piping over DN50,DN50 (below) can be made of wire or gate valves, or flanged gate valves (flanged valves or welded gate valves)

Q: What is wire feed gate valve? What do you say in French?: It should be the wire gate valve. Refers to the valve body with internal thread or external thread, and pipe thread connection. Also called thread valves, threaded valves, valves within the toothFlange gate valve is connected to the flange gate valve, this connection is the most common wayThe main difference is the connectionI only know their English, I'm sorry I can't help youBox thread valveFlange valve

Q: Fire protection gate valve from the wall how many distance there is no regulation?: Don't know don't answer. "According to the provisions of article 6.2.13 GB50038-2005" code for design of basement for civil air defense engineering, into or through the door unit between the door closed wall should be set up in the inner side or two nominal pressure pipeline is not less than 1.0MPa, the spool is stainless steel or copper gate or globe valve water pipe from the air enclosure structure. The installation position from the wall should be not more than 200mm.

Q: The legend of gate valve and stop valve: When the valve is installed, the medium can enter from the bottom of the valve core and enter the two way from the top. Medium from the spool into the advantages of the valve closed when the packing is not under pressure, can extend the service life of the packing, and can be pressure in front of the valve in the case of replacement of packing work. Medium from the spool into the bottom of the shortcomings of the valve driving torque is larger, about 1.05~1.08 times above the entrance, the stem by the axial force of large, easy to bend the stem. To this end, the media from below to enter the way, generally only applicable to small caliber manual stop valve, to the valve closed, the media acting on the spool of force is not greater than 350kg limit. Electric cut-off valve is generally used to enter the media from the top way. The disadvantage of the medium entering from the top is just the opposite of the way it is entered below.Compared with the gate valve, the utility model has the advantages of simple structure, good sealing performance, and convenient manufacture and maintenance. The disadvantage is that the liquid resistance is large, and the opening and closing force is large. Gate and globe valves are fully open closed type valve, cut off or connected as the medium use, not as a control valve.The range of application of stop valves and gate valves is determined by their characteristics. In the smaller passages, the cut-off valve is used when required for better shutoff; in the steam pipe and the large diameter water supply pipe, the gate valve is generally used because of less fluid resistance.

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