valve of china 2900

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Quick DetailsStandard or Nonstandard:  Standard Structure:  Gate Pressure:  Medium Pressure

Power:  Manual Material:  Casting Temperature of Media:  Medium Temperature

Media:  Water Port Size:  DN40mm-DN300 Place of Origin:  China (Mainland)

Model Number:  GF4 resilient gate valves:  resilient seat flange


Packaging & DeliveryPackaging Detail: air plastic bag inside/wooden box outside

Delivery Detail: 15-60days


SpecificationsDIN3352 F4 resilient seat flange gate valves

1.size:DN40-DN300

2.medium:water

3.standard:DIN

4.certificate:ISO9001 CE


resilient gate valves

1.size:DN40-DN300

2.medium:water

3.certificate:ISO9001 CE

4.standard:DIN


available medium:water

working temperature:≤80oC


flange dimensions:DIN2501


face to face dimensions:DIN3202F4.


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Q:The difference between butterfly valve d71x_10s and d341s-10
Before distinguishing between the two, you must first read the identification of the valve type:D stands for butterfly valves,3 means that the worm gear is connected and the drive does not indicate the handle7 and 4 indicate pipe to clamp connection, pipe flange connection, respectively1 means single eccentric, that is, the stem is not in the center of the butterfly plateThe former S indicates the material name of the valve body - plastic, X means sealing and the lining material is rubberThe latter S indicates the sealing lining material code ---- plastic, and the valve body is cast iron.10 means stress.
Q:What kinds of butterfly valves are available? What is the working principle of butterfly valves?
Divided by way of drive(1) electric butterfly valve(2) pneumatic butterfly valve;(3) hydraulic butterfly valve;(4) manual butterfly valve;In the form of structure:(1) Central sealed butterfly valve(2) single eccentric sealed butterfly valve(3) double eccentric sealed butterfly valve(4) three eccentric sealed butterfly valve;Sealing surface material score:(1) soft sealing butterfly valve.1) the sealing pairs are made of non-metallic soft materials, which are made of non-metallic soft materials.2) the sealing pair is made of metal hard material and is made of non-metallic soft material.(2) metal hard sealing butterfly valve. The sealing pair is made of metal hard material and is made of metal hard material.
Q:How to connect the signal butterfly valve?
Signal butterfly valve is divided into two, 1) single signal, that is, signal instructions open or shut in place, only reflects a state, 2) double signal instructions, that is able to reflect in place or in place.
Q:Water supply pipe gate valve and butterfly valve which good?
1. gate valve: also known as gate valve or gate, there is a valve in the valve flow direction perpendicular to the medium, adjust the height of the gate, you can adjust the flow of fluid. Valve advantages are small resistance, close tight, no water hammer phenomenon, widely used in a variety of liquid and gas shut-off valve. It also has some adjustment function, but when the part is opened, the gate is easy to be wetted by the fluid. When the fluid flows, it causes the shaking of the alarm board and the sealing surface is easy to wear. The drawback of the gate valve is that the structure is complex, the price is more expensive, it is difficult to repair, and the solid material is easy to deposit in the valve seat groove. Therefore, it is not suitable for the pipeline containing fiber or solid material in the fluid. Commonly used in the air, steam, oil medium pipeline, but also used as vent valve and low silk system valve.Gate valve is commonly used as one of the cut-off valve, mainly used to connect or cut off the medium in the pipeline, not applicable to regulating medium flow. Valve is suitable for pressure, temperature and caliber range, especially for medium and large diameter pipes.
Q:What is the principle of butterfly valve and check valve? Any difference?
Crown valve pressButterfly valve is butterfly valveThe check valve is a check valveButterfly valve is mainly switching functionThe check valve mainly stops the pipe from flowing backwardsThe two can only be said to be valvesThe others are different
Q:What does "10" in the butterfly valve "D71X-10" mean?
Represents the nominal pressure, refers to the 10MPa pressure butterfly valve, Zhengzhou butterfly valve factory specializing in the manufacture.
Q:Butterfly valves are widely used in 2.0MPa below the pressure and temperature of not more than 200 degrees of various media, right?
3. kinds of butterfly valve:According to the connection mode: flange type, clip type.According to the material of sealing surface, soft seal and hard sealing.According to the structural form, butterfly valves can be divided into the following types:Plate typeInclined plate typeOffset plateLever type4. butterfly valve features:(1) the structure is simple and the shape is small. The utility model has the advantages of compact structure, short structural length, small size and light weight, and is suitable for large caliber valves.(2) the resistance of the fluid is small, and when the valve is fully opened, the valve seat passage has an effective circulation area, so the fluid resistance is smaller.(3) open and close, convenient and quick, good adjustment performance, butterfly plate rotation 90 degrees can be completed headstock. By changing the angle of rotation of the disc, the flow can be graded.(4) the opening and closing moment is smaller, because the butterfly plate on both sides of the rotating shaft is basically equal to the medium, and the opposite direction of the torque is generated, so that the opening and closing is more labor-saving.(5) low pressure sealing performance, sealing surface materials generally use rubber, plastic, sealing performance is good. Limited by the material of the sealing ring, the pressure and the temperature range of the butterfly valve are smaller. But the use of hard sealing butterfly valve pressure and temperature range has been greatly improved.
Q:How much is the Honeywell butterfly DN300?
Find the agent or find a reliable valve plant a lot of foreign brands are in Chinese OEM so find a reliable factory is relatively good service to keep up
Q:What's the difference between D71X-16 and D71H-16 butterfly valves?
D71X-16 and D71H-16 butterfly difference is that the cut-off is not the same, the latter is stainless steel seal, corrosion resistance, friction, acid or impurities can be medium fluid. The former is rubber sealed, only through the general temperature of the medium, not acid, with more, you can ask Luoyang crown Ning
Q:What do you mean, handle, butterfly valve, hard back and soft back?
My understanding is: PTFE butterfly valve is a hard back; soft rubber seat is a soft back

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