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Do you know the characteristics of large size gate valve?

Author: name From: name Modify: Jun. 17, 2020
Dec. 14, 2019
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As a large size gate valve manufacturer, we supply many sizes of gate vavle,such as 16 inch Class 300 Cast Steel Gate Valve.


Advantages and disadvantages of DIN F5 large size gate valve:

1. Small flow resistance. The medium channel inside the valve body is straight through, the medium flows in a straight line, and the flow resistance is small.

2. Less effort when opening and closing. Compared with the shut-off valve, whether it is open or closed, the movement direction of the shutter is perpendicular to the medium flow direction.

3. High height, long opening and closing time. The opening and closing stroke of the shutter is large, and the lifting is performed by a screw.

4. Water hammer phenomenon is not easy to occur. The reason is the long shutdown time.

5. The medium can flow in any direction on both sides, which is easy to install. Gate valve channels are symmetrical on both sides.

6. The structure length (distance between the two end faces of the casing) is small.

7. Simple shape, short structure length, good manufacturing process and wide application range.

8. Compact structure, good valve rigidity, smooth passage, small flow resistance, sealing surface made of stainless steel and hard alloy, long service life, PTFE packing, reliable sealing, light and flexible operation.

DIN F5 Gate Valve

large size gate valve

Disadvantage:

It is easy to cause erosion and abrasion between the sealing surfaces, making maintenance difficult. The external dimensions are relatively large, a certain amount of space is required for opening, and the opening and closing time is long. The structure is more complicated.

As a Double Flanged Disc Gate Valve Supplier, share the characteristics of the gate valve

Light weight

The body is made of high-grade spheroidal graphite cast iron, which is about 20% to 30% lighter than traditional gate valves, and is easy to install and maintain.

Flat bottom gate

Traditional gate valves often deposit in the groove at the bottom of the valve due to foreign objects such as stones, wood, cement, iron filings, and debris after washing the pipe. Adopting the same flat-bottom design as the water pipe machine, it is not easy to cause debris accumulation, and the fluid is unobstructed.

Overall coating

The gate is made of high-quality rubber for overall internal and external rubber. European rubber vulcanization technology enables the vulcanized gate to ensure accurate geometric dimensions, and the rubber and ductile cast gate are firmly connected, not easy to fall off and have good elastic memory.

Precision casting valve body

The valve body adopts precision casting, and the precise geometric size allows the valve body to ensure the tightness of the valve without any finishing.

Precautions

1. The hand wheel, handle and transmission mechanism are not allowed to be used for lifting, and collision is strictly prohibited.

2. The double gate valve should be installed vertically (that is, the valve stem is in the vertical position and the handwheel is at the top).

3. The gate valve with the bypass valve should be opened before opening (to balance the pressure difference between the inlet and outlet and reduce the opening force).

4. The gate valve with transmission mechanism should be installed in accordance with the product instruction manual.

5. If the valve is frequently opened and closed, lubricate at least once a month.

6. The gate valve is only used for the medium operation of all kinds of pipelines or equipments that are fully open and fully closed, and it is not allowed to be used for throttling.

7. For gate valves with handwheels or handles, no auxiliary bars can be added during operation (if the seal is not tight, the sealing surface or other parts should be checked and repaired). Turn the handwheel and handle clockwise to turn off, otherwise turn on. The gate valve with transmission mechanism should be used in accordance with the product instruction manual. Our company not only has large size gate vavle, also has Gate Valve OEM, welcome to consult.