The ZZJ  pneumatic slurry valve is a lightweight shut-off valve driven by a pneumatic actuator, specifically designed for media containing fibers, solid particles, or viscous slurries in mining, papermaking, coal washing, municipal sewage, and chemical production. Utilizing a knife-edge principle, the core component—the gate plate—performs a vertical reciprocating motion under the actuator's thrust. Through the sharp blade at the bottom of the plate, the valve effectively shears through impurities at the moment of closing and presses against the seat to achieve a tight seal. With its short face-to-face dimension, low resistance coefficient, excellent anti-clogging capabilities, and ease of automation, the ZZJ series is a critical execution device for handling harsh media in modern industrial fluid systems.

Product Image of ZZJ Pneumatic Slurry Valve

1.Superior shearing and anti-jamming performance:The gate bottom is precision-machined into a wedge-shaped blade, providing a strong shearing action during closing to cut through fibers and crystals, completely solving the issues of jamming and seat damage common in traditional valves.
2.Ultra-short structure for space saving:The wafer or narrow flange design ensures overall dimensions and weight are much lower than traditional gate valves. This saves installation space and significantly reduces the mechanical load on the pipeline and its supports.
3.Full-bore design and low resistance:When fully open, the flow area matches the pipe exactly, ensuring unobstructed passage. This maximizes throughput, minimizes pressure drop, and prevents scale buildup within the valve cavity.
4.Powerful and stable pneumatic drive:Equipped with high-performance pneumatic cylinders for large thrust and rapid cycling. It easily integrates with solenoid valves and limit switches for remote DCS or PLC automated control.
5.Intrinsically safe attributes:Powered by clean compressed air, it eliminates spark risks and provides natural explosion-proof safety, ideal for dusty or flammable industrial environments.
6.Versatile sealing options:Available with wear-resistant rubber soft seals or hard-faced alloy hard seals. The sealing pairs offer exceptional erosion resistance, ensuring long service life in abrasive media like slag and coal slurry.
7.Precision guiding and alignment:Internal guide slots ensure the gate remains accurately positioned and uniformly stressed during movement, preventing eccentric wear or leaks caused by fluid impact.
8.Modular maintenance:The simple structure has few wearing parts. The scientific connection between actuator and body allows for online inspection and replacement of gaskets or packing without removing the valve from the line.

Structural Drawing of ZZJ Pneumatic Slurry Valve

List of Component Names and Materials

Performance Specification Sheet

Standard requirements for external dimensions

1.Design & Manufacturing: GB12237-89, API608, API 6D, JPI 7S-48, BS5351, DIN3357

2.Flange Dimensions: JB/T74～90, GB9112～9131, HGJ44～76, SH3406, ANSI B16.5, JIS B2212～2214, NF E29-211, DIN2543

3.Face-to-Face Dimensions: GB12221-89, ANSI B16.10, JIS B2002, NF E29-305, DIN3202

4.Inspection & Testing: JB/T 9092, API 598

Outline dimension table（Unit：mm）

Due to the rapid R&D iteration speed of valve products from China Kaivex Valve Group Co., Ltd., the above technical parameters and specification documents, including product overview, features, parts materials, outline dimension charts, CAD drawings, and product instruction manuals, are for your reference only. For actual applications, please contact our valve sales engineers to obtain the support you need for free. Thank you!