Cast steel gate valve product features and use

Casting gate valve opening and closing parts is the gate, the direction of movement of the gate and the fluid direction perpendicular to the gate valve can only be fully open and fully closed, can not be adjusted and throttling. The gate of the cast steel gate has two sealing surfaces. The two most commonly used gates are wedge-shaped, and the wedge angle varies with the valve parameters, usually 50, and 2 ° 52 'when the medium temperature is not high. Wedge gate valve can be made into a whole, called the rigid gate; can also be made to produce trace deformation of the gate to improve its craft, to make up the sealing surface angle in the processing of the deviation, The plate is called a flexible gate.

First, the characteristics of cast steel gate valve:

Light weight: the body made of high-grade black cast iron, the weight of the traditional valve weight reduction of about 20% to 30%, easy installation and maintenance.

Flat gate: the traditional gate valve is often in the water after the washing tube because of foreign objects such as stone, wood, cement, iron, debris and other silt in the bottom of the groove, easy to cause close to the formation of water leakage phenomenon, Elastic seat seal valve at the bottom with the same pipe with the flat design, not easy to cause debris deposition, so that fluid unimpeded.

The overall package of plastic: the use of high-quality rubber plate for the whole body, outsourcing plastic, the European first-class rubber vulcanization technology makes the curing of the gate to ensure accurate geometric dimensions, and rubber and ductile castings and then firmly, Elastic memory good.

Water Casting Body: The valve body is made of precision casting, and the precise geometry allows the valve body to be sealed without any finishing. 

Second, cast steel gate valve has the following advantages:

1, the fluid resistance is small, the sealing surface by the medium brush and erosion small.

2, opening and closing more effort.

3, the media flow is not restricted, no spoiler, do not reduce the pressure.

4, simple shape, short structure length, manufacturing process is good, for a wide range.

Third, cast steel gate valve shortcomings are as follows:

1, between the sealing surface can cause erosion and abrasion, maintenance more difficult.

2, larger size, open need some space, open and close a long time.

3, the structure is more complex.

Gate type, according to the sealing surface configuration can be divided into wedge-type gate valve and parallel gate valve, wedge gate valve can be divided into: single-gate, double-gate and flexible plate-type; parallel gate valve Can be divided into single-gate and double-plate type. According to the stem of the threaded position can be divided into two types of gate valve and dark bar gate valve. The use of cast steel gate valve use: a variety of industrial automation production pipeline flow, pressure, temperature control. For example: electricity, metallurgy, petrochemical, environmental protection, energy management, fire control systems.