PZ673H/Y Pneumatic Hard Seal Zero Leakage Knife Gate Valve

The PZ673H/Y pneumatic hard sealed zero leakage knife gate valve is in the form of a rising stem, and the DC channel design is free of slag and blockage. The bottom end of the blade is processed into a blade shape, which has a cutting function for soft materials such as fibers, pulp, and wood pulp, and has good opening and closing effects. A hard polytetrafluoroethylene scraper is installed on the upper end of the blade to prevent abrasive substances such as dust and gravel from entering the packing box, which can significantly improve the lifespan of the blade. The valve plate material is made of stainless steel, which can be finely polished to achieve a sealing effect. Compact design, small space occupation, light weight, affordable price, easy installation, complete wear-resistant and anti blocking measures, easy maintenance, convenient use and long service life, and the drive device can be freely selected. Applicable media: gold powder, tailings, pulp, wood pulp, fiber, dust, chemical treatment wastewater, sedimentation tank, sand, slag, coal slurry, asphalt, silo outlet, fruits, grains, cement slurry, slaughterhouse wastewater, etc.

Application scope:
The Zhonghang brand zero leakage hard sealed knife gate valve is used in gas-solid two-phase pipelines of production raw materials (powder, slurry, slag ash, food raw glue) in pneumatic conveying systems, achieving zero leakage use, reducing the waste of production raw material flow caused by valve leakage, and saving production costs. Mainly suitable for pipeline pressures ranging from PN6 to PN25, with a temperature range of -196 ℃ to+350 ℃. Materials can be selected from a series of alloy steels such as WCB, 304, 316, and 2520 high-temperature steel. Widely used in chemical, coal, sugar, wastewater, paper making and other fields.

Technical features:

1. Newly optimized structural design, widely used in industries such as paper making, coal slag, coal slurry, acid washing coal process, food, medicine, etc. The inlet end of the valve has a fully open structure, and there is no accumulation of material. The valve can be opened and closed smoothly in different installation positions.
2. The interior and sealing components of the valve chamber can be lined with ceramics and sprayed with hard alloy to prevent particle media from wearing the valve chamber and sealing surface, ensuring good sealing performance under wear-resistant working conditions.
3. Lightweight structure, flexible switching, with a leakage level of VI (zero leakage).
4. The sealing surfaces of the valve seat and valve plate are welded with hard alloy, which is wear-resistant and greatly improves the service life of the valve.
5. The valve adopts pneumatic, electric, electro-hydraulic linkage, gear reduction drive, and hand wheel switch.

Execution standards:
Design standard: JB/T869l-1998 MSS SP-81
Flange standard: GB/T9113.1-2000
Structural length: GB/T1-5188.2-94
Testing and acceptance: GB/T13927

Performance parameter:

Component material selection:

External structural connection size: