Mining Ball Valves Manufacturers Introduces The Characteristics Of Small Diameter Ball Valves

The material of the valve is all stainless steel, with a two-way sealing structure, which is not restricted by the flow direction of the medium, high and low pressure, positive and negative pressure. There are two ways of the internal thread and flange connection, suitable for coal mine fire protection, spraying and pulling underground water pump jet pump, and vacuum pump. Below, Mining Ball Valves Manufacturers introduces the characteristics of small-diameter ball valves:

1. Labor-saving operation: the ball is supported by upper and lower bearings, which reduces friction and eliminates the excessive torque caused by the huge sealing load formed by the inlet pressure pushing the ball and the sealing seat.

2. Reliable sealing performance: PTFE monolithic material sealing ring is embedded in the stainless steel valve seat, and the end of the metal valve seat is equipped with a spring to ensure the sufficient pre-tightening force of the sealing ring. When the sealing surface of the valve is worn during use, under the action of the spring The valve continues to ensure good sealing performance. Fireproof structure: In order to prevent the PTFE sealing ring from being burned due to sudden heat or fire, a large leak occurs

If there is no leakage, it will fuel the fire. A fireproof sealing ring is installed between the ball and the valve seat. When the sealing ring burns out, under the action of the spring force, the valve seat sealing ring will be quickly pushed to the ball to form a metal-to-metal seal. sealing effect.

3. Automatic pressure relief function: When the stagnant medium pressure in the valve cavity rises abnormally and exceeds the pre-tightening force of the spring, the valve seat will retreat and break away from the ball to achieve the effect of automatic pressure relief, and the valve seat will automatically reset after pressure relief.

4. Drainage pipeline: Drainage holes are set on the upper and lower sides of the valve body to check whether the valve seat leaks. During work, when the valve is fully open or fully closed, the pressure in the middle cavity can be removed, and the packing can be directly replaced; the middle cavity can be discharged Retentate, reducing the pollution of the medium to the valve.