Metal Sealing Wafer Air Operated Butterfly Valves

Description of Hard-Seal Pneumatic Butterfly Valve

The pneumatic wafer-type hard-sealed butterfly valve uses a circular butterfly plate that rotates with the valve body to open and close to achieve the activation action. The pneumatic valve is mainly used as a cut-off valve. It can also be designed to have the function of adjustment or segment valve and adjustment. Currently, butterfly valves are increasingly used on low-pressure large and medium-diameter pipelines. Pneumatic wafer-type hard-sealed butterfly valve is suitable for regulating medium flow and starting on various pipelines such as water, steam, oil, air, gas, petrochemicals, power plants, steel plants, industrial environmental protection water treatment, high-rise building water supply and drainage pipelines, etc. For closing.

Get a Quote Now Download Datasheet

Technical Parameter Of Metal Sealing Air Actuators Butterfly Valve

Valve Models	DN50~DN800	Rotate Angle	90°+5%
Connection Type	Wafer	Pneumatic Type	YAT Series or YAW Series pneumatic actuator
Cylinder	Double acting or Single Acting(Spring Return)	Control Method	Two-position cut-off (switch type), Modulating type, three-stage type (opening optional)
Air Pressure	Max Working Pressure:8bar Double acting: 2.5bar~8bar Single acting: 4.5bar~8bar	Nominal pressure	PN16, PN25, PN40
Enviroment Temperature	Standard:-20~+80℃	Body Material	Carton Steel, Cast Iron, Stainless Steel (304, 304L, 316, 316L)
Disc Material	Stainless Steel (304, 304L, 316, 316L)	Medium	Water, gas, oil, etc.
Medium Temperature	-40~+180℃	Seat Material	Metal hard seal, PTFE, carbide
Packing	PTFE, flexible graphite	Available accessories	Solenoid valve, air filter pressure reducing valve, valve position feedback device, valve positioner, handwheel mechanism, etc.

Features of Hard Sealing Wafer Air Actuator Butterfly Valve

Applicable temperature -20~+425℃;

High working pressure, wear resistance, long service life and fast opening and closing time;

The pneumatic wafer-type hard-seal butterfly valve has good sealing performance, automatic centering function, and small leakage;

The applicable temperature of F PTFE seal is ≤160℃.

The main advantages of the pneumatic wafer-type hard-sealed butterfly valve are simple structure, small size, light weight and low cost.

Installed in a high-altitude secret passage, it is easy to operate through the control of a two-position five-way solenoid valve, and the flow medium can also be adjusted.

The fluid resistance is small. When the medium and large diameter pneumatic butterfly valve is fully opened, the effective flow area is large, and the opening and closing are quick and labor-saving. The disc lever can be opened and closed by rotating 90 degrees. Since the medium force of the disc lever on both sides of the rotating shaft is close to the same, The torque generated is in the opposite direction, so the opening and closing torque is small, and good sealing can be achieved under low pressure.

Butterfly valve sealing materials include nitrile rubber, fluorine rubber, edible rubber, and PTFE lining, so the sealing performance is good. Among them, the hard-sealed butterfly valve is a soft and hard laminated metal sheet, which has the advantages of metal hard seal and elastic seal and has excellent sealing performance regardless of low temperature.

Ordering Instructions

To place an order with YUECHI for automotive solutions for valve applications, adhere to the following guidelines:

Valve

Specify the type of valve (e.g., ball valve, globe valve). Provide information on operational pressure. Specify valve size. Indicate the type of sealing (hard-sealed or soft-sealed). Clearly state the media the valve will handle. Specify the operating temperature.

Pneumatic Actuator

Choose between double-acting and spring-return configurations. Specify whether normally closed or normally open options are needed.

Solenoid Valve Type

Indicate whether a double-solenoid or single-solenoid valve is required. Specify the supply voltage. Specify if an explosion-proof type is necessary.

Limited Switches Box Type

Choose between a basic or explosion-proof type.

Valve Positioner Type

Specify the current signal type. Specify the air supply signal type. Indicate if electric-pneumatic converters are required. Specify the desired explosion-proof grade.

Air Filter & Regulator

Specify requirements for the air filter. Specify requirements for the solenoid valve. Specify requirements for the limit switches box.

Manual Gear Operator

Specify if a declutchable worm gear operator is required.

Customized Solutions

Provide details about any specific accessories required from a designated brand.

Once this information is gathered, contact YUECHI’s sales or customer service department to place your order. Ensure all specifications are accurately communicated to receive the most suitable automotive solutions for your valve applications.