High Temperature Slag Locking Ball Valve

Product Introduction：

High temperature slag-locking Ball Valve is a kind of valve for special working conditions of Metal Seated Ball Valve, and is one of the essential important equipment of coal chemical plant，It uses carbide self-scraping mechanism to realize spherical self-cleaning while the valve is opened and closed, to prevent ash from blocking on the sealing surface of the ball，The continuous trouble-free operation time of key sealing components such as ball, valve seat, spring, etc. is very long, The two-way seal leakage reaches ANSI B16.104 Class V under the maximum differential pressure.Slag locking valve and flushing valve are the most important valves of gasification device.Slag-locking Ball Valve can withstand the direct abrasion of high temperature, high pressure and ash，It is required to be sealed tightly in both directions under the condition of high pressure difference and has high requirements on valve structure and material.

Structural Features：

1、High-temperature slag locking Ball Valve and flushing valve are two-way rotary full-section switch Ball Valve and Trunnion ball structure；The valve is of high-temperature slag-locking structure, and the metal and protective coating of the valve body and internal parts have good usability in impact, corrosion and abrasion.

2、Slag-locking Ball Valve stem anti-blow design；The valve stem and the ball are independent，The end of The valve stem close to the ball is designed as an integral T-type structure，The gland flange can block the T-shaped valve rod and prevent it from being blown out by the pressure in the valve chamber of the slag locking Ball Valve.

3、Double piston effect of slag locking Ball Valve；The area difference can be formed before and after the valve seatUnder the effect of upstream and downstream media or cavity pressure, the valve seat can be pushed to the ball to realize the sealing of slag-locking Ball Valve.Piston effect is a sealing form that uses pipeline pressure to push the valve seat to hold the ball.When double-piston effect valve seat is used, once the upstream valve seat leaks, the pressure enters the middle cavity to push the downstream valve seat，Because of the double-piston effect valve seat design, the downstream valve seat will hold the ball in turn to achieve sealing.Therefore, the sealing of double-piston Ball Valve is more reliable, and it is applied to the occasions with very strict sealing requirements.

4、Anti-static device for slag-locking Ball Valve，The valve stem of metal slag-locking Ball Valve is equipped with spring grounding plug pin to make the ball，Valve rod and valve body contact, forming a conduction circuit, which can transfer the charge，Thus avoiding the accumulation of static electricity caused by friction when the valve is opened and closed, or the accumulation of static electricity caused by fluid impacting the inner cavity of the valve body，Because this accumulation of static electricity is extremely dangerous for pipelines in some dangerous areas.

5、A Various of of driving forms can be selected, including pneumatic, electric and pneumatic linkage, of which the pneumatic square test is the most widely used.