Diaphragm Valve Series

A diaphragm valve is a type of valve that uses an elastic diaphragm as the opening and closing component, isolating the inner cavity of the valve body from the driving parts, and controlling the flow of media by deforming the diaphragm, which is suitable for corrosive, high - viscosity media or media containing particulate impurities.

G41F plastic diaphragm valve

Plastic diaphragm valves are suitable for transporting and shutting off corrosive media, as well as regulating flow. Depending on the material, the operating temperature ranges from -14°C to 100°C or -40°C to 140°C. The wetted parts are assembled from RPP or PVDF injection - molded parts, featuring excellent corrosion resistance, convenient operation, and light weight. They can replace stainless - steel valves.

EG41J British Standard Rubber - lined Diaphragm Valve

The British Standard rubber-lined diaphragm valve is a special type of shut-off valve:

The opening and closing part with elastic seal ensures no internal leakage.
The streamlined flow passage results in minimal pressure loss.
Without a stuffing box, there is no external leakage.
The valve body and valve cover are separated by an intermediate diaphragm, protecting parts such as the valve cover and valve stem above the diaphragm from medium corrosion.
The diaphragm is replaceable, leading to low maintenance costs.
The variety of lining materials allows it to be suitable for various media, featuring high strength and excellent corrosion resistance.

G641J Pneumatic Diaphragm Valve

Structural Features

The diaphragm made of rubber seal features good sealing performance.
Limited by the diaphragm material, the diaphragm valve is suitable for low-pressure and relatively low-temperature occasions.
According to the structural form, the diaphragm valves can be divided into six types: roof type, straight-through flow type, stop type, straight-through type, gate type and right-angle type. The connection form is usually flange connection. According to the driving mode, it can be divided into three types: manual, electric and pneumatic. Among them, the pneumatic drive can be further divided into three types: normally open type, normally closed type and reciprocating type.
Generally, it is not suitable for pipelines with a temperature higher than 60 degrees Celsius and those transporting organic solvents and strong oxidizing media. Also, it is not advisable to use pneumatic diaphragm valves in pipelines with relatively high pressure.

EG641J British Standard Pneumatic Diaphragm Valve

Product Features

Design and Manufacture: BS5156
Structural Length: BS5156
Flange Connection Dimensions: BS4504, DIN2532, JIS B2212, ANSI B16.1, ISO2004
EG6B41W non-lined, EG6B41J rubber-lined pneumatic diaphragm valve, normally closed pneumatic diaphragm valve.

Application

This valve is specifically designed for controlling non-corrosive or general corrosive media. The inner surface of the valve body is either unlined or coated with various selectable rubbers, making it suitable for liquid pipelines under different working temperatures.

Applicable Temperature

≤85℃, ≤100℃, ≤120℃, ≤150℃ (depending on the lining and diaphragm materials)

Pressure Rating

PN (MPa): 0.6, 1.0, 1.6