Manual Cast Steel Open Gate Valve

Product Description

The opening and closing part of the manual cast steel open gate valve is the gate. The direction of movement of the gate is perpendicular to the direction of the fluid. The open gate valve can only be fully open and fully closed, and cannot be adjusted and throttled.

When the open gate valve is closed, the sealing surface can be sealed only by the medium pressure, that is, the sealing surface of the shutter is pressed against the valve seat on the other side only by the medium pressure to ensure the sealing of the sealing surface, which is self-sealing. Most of the gate valves are forced to seal, that is, when the valve is closed, the external force is forced to press the gate to the valve seat to ensure the sealing of the sealing surface.

Features

1. Light weight: The body is made of high-grade ductile iron, which is about 20%~30% lighter than traditional gate valves. It is easy to install and maintain.

2. Flat-bottomed gate: Traditional gate valves are often deposited in the groove of the valve bottom due to foreign objects such as stones, wood blocks, cement, iron filings, debris, etc. after the water is washed, which is easy to close and form a water leakage phenomenon. The bottom of the elastic seat sealing gate valve adopts the same flat bottom design as the water pipe machine, which is not easy to cause debris accumulation, so that the fluid is unobstructed.

3. Integral encapsulation: The ram is made of high-quality rubber for the whole inner and outer rubber. The first-class rubber vulcanization technology in Europe enables the vulcanized ram to ensure precise geometrical dimensions, and the rubber and spheroidal cast slabs are secure and not easy to fall off. Flexible memory is good. water

4. Precision cast body: The valve body is precision cast, and the precise geometry allows the valve body to be sealed without any finishing.

Advantage

1. The fluid resistance is small, and the sealing surface is less washed and eroded by the medium.

2. It is more labor-saving to open and close.

3. The flow direction of the medium is not limited, no disturbance, no pressure reduction.

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

Advantage

Can be widely used in tap water, sewage, construction, petroleum, chemical, food, pharmaceutical, textile, electric power, shipbuilding, metallurgy, energy systems and other body pipelines as a regulating and intercepting device.

Standard

Design specification: GB/T 12234

Structure length: GB/T 12221

Connection flange: JB/T 79.1

Test and inspection: JB/T 9092

Pressure-temperature: GB/T 9131

Product identification: GB/T 12220