PZ673 Pneumatic Wafer Knife Gate Valve is an industrial automation execution unit combining a pneumatic actuator with an ultra-thin knife gate valve body. Utilizing compressed air as the power source, the pneumatic cylinder drives the piston to move the gate plate in a linear reciprocating motion, thereby opening or closing the pipeline. The core design features a gate plate with a sharp knife-edge at the bottom, which effectively shears through fibers, paper pulp, wood pulp, and impurities at the moment of closing to prevent jamming. The letters H, X, and F represent metal hard seal, rubber soft seal, and fluoroplastic seal, respectively, to meet various temperature, pressure, and corrosive conditions. Known for its short face-to-face dimension, light weight, and low flow resistance, this valve is widely used in paper making, mining, coal washing, chemicals, and sewage treatment systems.

Product Image of PZ673 Pneumatic Wafer Knife Gate Valve

1. Ultra-short structure saves space:The wafer-style thin design ensures overall dimensions and weight are significantly lower than traditional gate valves. This saves installation space and reduces mechanical loads on the pipeline system, lowering support costs.
2.Knife-edge gate for powerful shearing:The bottom of the gate is precision-machined into a wedge-shaped edge. It provides a strong shearing effect during closing, easily cutting through impurities and fibers in viscous media to eliminate the risk of sticking or incomplete closure.
3.Full-bore design and low resistance:When fully open, the flow area matches the pipe diameter exactly, resulting in an extremely low resistance coefficient. This structure prevents media deposition and significantly reduces pumping energy consumption.
4.Powerful and stable pneumatic drive:Equipped with high-performance pneumatic cylinders, providing large output thrust and rapid response. It can be configured with solenoid valves and limit switches for remote control and supports fail-safe pre-setting.
5.Diverse sealing configurations:Available in H (metal seat for heat/wear resistance), X (rubber for tight seal), and F (PTFE for anti-corrosion) materials. The scientific seat design ensures reliable performance in both pressure directions.
6.Durable internal materials:Body and internals are available in cast steel, stainless steel, or wear-resistant alloys. The gate surface is typically hard-chrome plated or nitrided to enhance hardness and erosion resistance for long-term stability.
7.Modular design for easy service:The simple structure features minimal wearing parts. Actuator-to-body connections are standardized, allowing for online inspection and replacement of packing and seals without removing the valve from the line.
8.Intrinsic safety and protection:Driven by compressed air, it eliminates spark risks, providing natural safety for hazardous zones such as powder-dense, flammable, or explosive industrial environments.

Structural Drawing of  PZ673 Pneumatic Wafer Knife Gate Valve

List of Component Names and Materials

Performance Specification Sheet

Standard requirements for external dimensions

1.Design & Manufacture： JB/T869l-1998 MSS SP-81

2.Flange Dimensions：GB/T9113．1-2000

3.Face-to-Face Dimensions：GB/T1-5188．2-94

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!