The RETZ imported drum-type pneumatic diaphragm valve is mainly composed of the valve body, valve cover, diaphragm, valve seat, and operating mechanism. When a control signal (such as air pressure) enters the operating mechanism, it transmits the air pressure to the air chamber in the valve body, increasing the gas pressure inside the chamber. This causes the upper part of the diaphragm to move downward, compressing the medium in the liquid pipeline and closing the valve. Conversely, when the control signal disappears, the operating mechanism releases the air pressure from the chamber, reducing the gas pressure inside. The upper part of the diaphragm then rebounds, allowing liquid to flow through the valve, thereby opening it. Since the diaphragm part of the pneumatic diaphragm valve can completely isolate the medium inside the valve from the external environment, it is commonly used for controlling corrosive, crystallizable, high-viscosity, and other challenging media.

If you have any requirements, such as "I want this type of diaphragm valve!" or "I want to use it for this fluid!", feel free to tell the RETZ (USA RETZ Diaphragm Valve) team.

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Models: Pneumatic Rubber-Lined Diaphragm Valve, Pneumatic Unlined Diaphragm Valve, Pneumatic Fluorine-Lined Diaphragm Valve

Application--

The pneumatic diaphragm valve is mainly composed of the valve body, valve cover, diaphragm, valve seat, and operating mechanism. When a control signal (such as air pressure) enters the operating mechanism, it transmits the air pressure to the air chamber in the valve body, increasing the gas pressure inside the chamber. This causes the upper part of the diaphragm to move downward, compressing the medium in the liquid pipeline and closing the valve. Conversely, when the control signal disappears, the operating mechanism releases the air pressure from the chamber, reducing the gas pressure inside. The upper part of the diaphragm then rebounds, allowing liquid to flow through the valve, thereby opening it. Since the diaphragm part of the pneumatic diaphragm valve can completely isolate the medium inside the valve from the external environment, it is commonly used for controlling corrosive, crystallizable, high-viscosity, and other challenging media.

Principle--

When the pressure medium enters the valve control chamber and the diaphragm is pressed downward, the valve passage is closed. When the diaphragm rises, the valve passage opens. The diaphragm valve has no valve stem, sealing gasket, or directional seat; the only moving part in the passage is the diaphragm. Therefore, there is no risk of corrosion or seizing, ensuring higher stability.

Advantages--

1. Elastic sealing closure ensures no internal leakage;

2. Features low resistance, high flow rate, no external leakage, and fire and static electricity protection;

3. The valve body and valve cover are separated by the intermediate diaphragm, protecting components such as the valve cover and valve stem above the diaphragm from medium erosion;

4. No stuffing box, making external leakage impossible;

5. The only moving part is the diaphragm, eliminating risks of corrosion and seizing;

Technical Parameters

Specifications: 1/2-8"

Applicable Pressure: PN10, PN16  150LB, JIS10K

Applicable Temperature: -20~180℃

Control: Manual + Pneumatic

Valve Body: Ductile Iron, Carbon Steel, Stainless Steel

Valve Cover: Ductile Iron, Carbon Steel, Stainless Steel

Lining: Fluoroplastic, Rubber

Diaphragm Material: PFA, PTFE, EPDM