Slag locking valve

Product overview

The slag-locking ball valve is a valve for special working conditions of metal hard-sealed ball valves. It is also called a locking bucket valve. It is mainly used in the coal-water slurry pressurized gasification device of the coal chemical gasifier and the dry coal pulverized entrained bed pressurized gasification device to control the slag discharge process.

Value advantage

1. High-precision components, excellent dimensional consistency, and lower torque enable more economical and rapid opening and closing;

2. Ultrasonic flame spraying of tungsten carbide and chromium carbide, plasma spraying of nickel-based alloys, and laser cladding of stellite alloys meet the requirements of different working conditions and extend service life.

Application scenarios

Slag-locking valves are widely used in industries such as coal chemical, polysilicon, petroleum, chemical, power, metallurgy, cement, sugar refining, and mining.

Technical parameters

Size range

NPS 2~16

Design standards:

API 608/ASME B16.34

Structural length standard:

ASME B16.10

Inspection requirements:

API 598

Work pressure:

CL600~CL2500

Temperature range:

-29℃~650℃

Main materials: carbon steel, stainless steel, alloy steel, duplex steel, low-temperature steel, nickel-based steel, titanium alloy, etc.

Connection methods: RF, RTJ, BW

Transmission methods: manual, gear-driven, electric, pneumatic, and hydraulic.

Customer Challenges

1. Under low-pressure conditions, the metal sealing surfaces are difficult to fit fully, which can easily lead to leakage.

2. High opening and closing torque: The friction of the metal sealing surface is much greater than that of the soft seal, requiring greater operating force or higher-specification drive devices (such as higher-power actuators), which increases equipment investment and energy consumption.

3. High maintenance difficulty: Once the sealing surface is damaged, it requires professional grinding and repair, which is time-consuming and costly. Unlike soft seals, the sealing components cannot be directly replaced.