Manual Diaphragm Valve

Key Features of the Manual Diaphragm Valve

304/316L stainless steel construction: Wetted parts are available in 304 or 316L stainless steel for hygienic and corrosion-resistant fluid handling.
Sanitary diaphragm design: The diaphragm separates the process medium from the valve stem and upper chamber, helping minimize contamination and external leakage.
Multiple connection options: Available with clamp, welded, threaded and flanged connections to suit different sanitary piping systems.
EPDM and PTFE diaphragm options: Different diaphragm materials are available according to operating temperature and process medium requirements.
Easy cleaning and drainage: The optimized valve body helps reduce fluid retention and supports efficient cleaning and complete drainage.
Manual operation: The handwheel provides direct control of valve opening and closing.
Wide size range: Available from 1 inch to 4 inches (DN25–DN100).
Hygienic applications: Suitable for pharmaceutical, food and beverage, dairy, biotechnology and high-purity processing systems.

The diaphragm is closed under normal state, and that moment the diaphragm clung to the valve body cavity, and closing off the flow path through the pipeline.

When the diaphragm valve have the requirement to clean or open,the valve stem moves upwards according to the manual or pneumatic actuator equipment, spherical diaphragms naturally bend upwards,so that the valve is open and reach the requirement of clean and open.

The diaphragm make the lower body cavity and the upper chamber separated from the valve cover;so that the stem at the top of the diaphragm ,disc media and other parts from corrosioaeliminating the need for packing structure.and no media leaks.the optimize valve body made the cleaning liquid flow out totally, so that don’ t have any entrapment.

Design features:

Material for the part contacted with media is 304/316L, other part is 304,Sealing material EPDM + PTFE. working pressure: 0?lObar control air pressure: 5?8bar

Working temperature: EPDM(-40 ~+120°C), PTFE(-40 ~+1B00C), FPM (-40~+180°C )

Connection: clamp,weld,thread,flange

Control mode: manual operation, pneumatic, electric

Size: 1″ -4″ /DN25-100 Standards: 3A,DIN,SMS,IDF,ISO

Relations Between Flow Rate And O.d ?   KV is a data of the flow rate. The data describes valve flux when the water of 5°C to 30°C in the pressure difference for lbar. ?   kv is the data when the valve shows the stature of100%open. The diaphragm valve flow/choice(opening f)chart.

Manual Diaphragm Valve FAQ

What Are the Main Advantages of a Manual Diaphragm Valve?

A manual diaphragm valve provides reliable flow shutoff, excellent media isolation, easy cleaning and drainage, and hygienic operation for demanding fluid processing applications.

What Is the Difference Between a Manual and Pneumatic Diaphragm Valve?

A manual diaphragm valve is operated by a handwheel, while a pneumatic diaphragm valve uses compressed air to control the valve.

What Is the Difference Between a Manual Diaphragm Valve and a Ball Valve?

A manual diaphragm valve uses a flexible diaphragm to isolate the process medium from the valve stem, while a ball valve uses a rotating ball to control flow.

Can Manual Diaphragm Valves Be Used in Pharmaceutical Processing?

Yes, manual diaphragm valves made from 304/316L stainless steel are suitable for hygienic and high-purity pharmaceutical processing applications.

Are Manual Diaphragm Valves Suitable for Food and Beverage Processing?

Yes, manual diaphragm valves are suitable for food and beverage processing because their sanitary design supports easy cleaning, drainage and hygienic fluid handling.

Are Manual Diaphragm Valves Easy to Clean and Drain?

Yes, the optimized valve body and diaphragm design help minimize fluid retention and allow efficient cleaning and complete drainage.