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A straight-through diaphragm valve is a special type of valve with shut-off function. The core secret of the "diaphragm valve" lies in the "diaphragm"—inside the valve, there is a layer of rubber or plastic "membrane," much like cling film, that isolates the fluid from the metal components. "Straight-through" reveals that the internal passage of the valve is like a straight pipe, allowing the fluid to "flow in a straight line" with minimal resistance and no risk of clogging.

Its closing element consists of a steel valve disc and a diaphragm made of soft material (a composite of rubber and fluoroplastic), separating the valve body cavity from the valve cover cavity. It works like "pinching a water pipe"—pinch it (the diaphragm is pressed down) to stop the water, and release it (the diaphragm is lifted) to allow water flow, achieving the purpose of shutting off the medium inside the pipe.

If you have any requirements, such as "I want this type of diaphragm valve!" or "I want to use it for this fluid!", please feel free to tell RETZ.

A straight-through rubber-lined diaphragm valve is a special type of valve with shut-off function. Its closing element consists of a steel valve disc and a diaphragm made of soft material (a composite of rubber and fluoroplastic), separating the valve body cavity from the valve cover cavity to achieve the purpose of shutting off the medium inside the pipe.

Structural Features:

1. Elastic sealing closing element ensures no internal leakage;

2. Streamlined flow passage minimizes pressure loss;

3. No stuffing box, thus no external leakage;

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

5. The diaphragm is replaceable, resulting in low maintenance costs;

6. A variety of lining materials make it suitable for various media with good corrosion resistance;

Component Materials:

Valve Body: Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel

Valve Cover: Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel

Lining: Unlined, Rubber

Diaphragm: Rubber

Valve Disc: Cast Iron

Stem: Carbon Steel, Stainless Steel

Handwheel: Cast Iron

Parameters:

Size: 1-12"

Applicable Pressure: PN10, 150LB, JIS10K

Applicable Temperature: -20~80°C

Control: Manual, Pneumatic

Straight-through diaphragm valves are used to control non-corrosive or generally corrosive media. The inner surface of the valve body is either unlined or coated with various optional rubbers, making them suitable for different working temperatures and fluid pipelines.