Pneumatic wafer-type slurry knife gate valve

What is DZ673X pneumatic clamping slurry knife gate valve?

DZ673X adopts a knife type gate, clamp connection and pneumatic actuator, and completes pipeline opening and closing through the straight lifting of the gate. Knife shaped structures are commonly used in slurries, wastewater, slurry, and media containing fibers or particles, but the specific particle size, concentration, and degree of abrasion still need to be confirmed based on the working conditions.

Nominal pressure and valve body material

The pressure configuration of DZ673X includes PN6 and PN10, and the valve body material options include QT450 ductile iron and WCB cast steel. Different diameters require separate determination of the output thrust of the pneumatic actuator, flange installation conditions, as well as the gate, valve seat, and sealing structure; Different specifications of actuators and sealing configurations cannot be mixed into the same set of parameters.

What are the characteristics of the clamp structure?

The installation of wafer-type knife gate valve between pipeline flanges can shorten the valve structure length and reduce installation space. But during installation, it is necessary to confirm the flange size, bolt arrangement, support, and actual structural length of the pipeline, and cannot rely solely on DN to determine whether it can be directly replaced.

How to choose a pneumatic actuator?

The actuator should be selected based on valve size, pressure difference, gate friction, gas source pressure, action time, and fault safety requirements. Single acting or double acting schemes can be configured according to project needs, and accessories such as solenoid valves, limit switches, or positioners should also be confirmed according to control requirements.

Is knife gate valve suitable for precise flow regulation?

This type of product is mainly used for cutting and isolation. Even if pneumatic actuators or locators are configured, they cannot be automatically defined as precision regulating valves; If continuous flow control is required, the valve flow characteristics, flushing risk, and control stability should be checked.

What needs to be confirmed for the selection of slurry working conditions?

Media composition, solid concentration, maximum particle size, abrasiveness, temperature, pressure, etc. need to be provided DN、 Pipeline flanges, valve bodies and sealing materials, gas source conditions, opening and closing frequency, and fault safety requirements.

DZ673X Pneumatic Slurry Knife Gate Valve Common Problems

Does DZ673X come with 4-20mA positioning control by default?

No. The locator and control signal belong to the optional control scheme and should be confirmed according to the project automation requirements and actuator configuration.

Is the wafer-type knife gate valve necessarily more wear-resistant than the flange type?

not always. The connection method itself cannot determine the wear resistance, which is mainly affected by the gate, valve seat, material, and medium working conditions.

What data is required for DZ673X cylinder selection?

Information such as valve size, working pressure difference, gas source pressure, action mode, action time, opening and closing frequency, and fault safety position is required.