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Sanying Fluid Equipment Co., Ltd. : Your Professional Pneumatic Sanitary Diaphragm Valve Manufacturer!

 

Sanying Fluid Equipment Co., Ltd. was established in 2010, strategically situated in Wenzhou, China. Our factory dedicated to delivering exceptional valve and pipe solutions with precision and excellence. We are a leading manufacturing and trading combo for sanitary valves, pipe and tank fittings more than 10 years.

 

 
 

Why choose us?

Advanced equipment

Our company specializes in manufacturing high-precision valves and pipeline components for pharmaceutical machinery equipment. The facility features a well-organized layout with dedicated sections for raw material storage, coil processing, CNC machining, precision polishing, professional assembly, and standardized shipping.

Quality control

Each workshop maintains a clean and orderly environment, supported by streamlined processes and close teamwork to ensure strict quality control from raw materials to finished products. We are committed to delivering reliable and efficient solutions that meet industry standards.

Sales market

Our high-standard valves and fittings have been widely adopted across global markets, including Russia, India, Indonesia, Europe, Thailand, South Korea, and Singapore, earning consistent positive feedback for product quality, reliability, and service.

 

Benefits of Pneumatic Sanitary Diaphragm Valve
 

Flow regulation
The primary function of a sanitary diaphragm valve is to regulate fluid flow. The valve accomplishes this through the movement of a flexible diaphragm, which is raised or lowered to open or close the valve.

 

Hygienic design
These valves are designed with hygiene as a priority. They are typically made from materials that are easy to clean and sterilize, such as stainless steel, and have minimal crevices where bacteria can accumulate.

3 Way Pneumatic Sanitary Diaphragm Valve

 

3 Way Pneumatic Sanitary Diaphragm Valve

Pressure handling
Sanitary diaphragm valves are capable of handling varying pressure levels, making them suitable for a range of applications where pressure control is crucial.

 

Temperature resistance
These valves can operate under a range of temperatures, which is essential for processes involving heat sterilization.

 

Product Parameters

 

Product name

Sanitary Pneumatic Pharmaceutical Diaphragm Valve

Material quality

AISI/Stainless Steel 316L

Standard

DIN/ISO/3A

Size available

1/2" - 4"

Seal Ring

PTFE+EPDM Double Layer Membrane with FDA 177.2600

Application

Pharmacy, Biological, beer, food, dairy, beverage, cosmetic, chemical industry

 

Application of Pneumatic Sanitary Diaphragm Valve
 

Water treatment
In water treatment facilities, sanitary pneumatic diaphragm valves play a vital role in managing the flow of raw water, treated water, and chemical additives such as chlorine, sodium hypochlorite, and coagulants. Their corrosion-resistant construction—typically using materials like 316L stainless steel and EPDM or PTFE diaphragms—makes them highly durable when exposed to aggressive disinfectants and pH-altering chemicals.

 

Food and beverage
The food and beverage industry relies heavily on sanitary pneumatic diaphragm valves for processing products such as dairy, juices, beer, wine, sauces, and edible oils. These valves meet strict FDA and EHEDG standards for food contact surfaces, ensuring that no harmful residues or contaminants are introduced into the product stream.

 

Pharmaceuticals
In pharmaceutical manufacturing, maintaining absolute sterility is non-negotiable. Sanitary pneumatic diaphragm valves are used to regulate the flow of sterile water, active pharmaceutical ingredients (APIs), solvents, and cell cultures in bioreactors and filtration systems.

 

Brewery operations
Breweries use sanitary pneumatic diaphragm valves throughout the brewing process—from mashing and lautering to fermentation, filtration, and packaging. These valves handle a wide range of media, including hot wort, yeast slurries, carbonated beer, and cleaning solutions, all under variable pressure and temperature conditions.

 

Chemical processing
In chemical processing, where safety and material compatibility are critical, sanitary pneumatic diaphragm valves are employed to control the transfer of corrosive, toxic, or volatile substances such as acids, alkalis, solvents, and slurries. Constructed with chemically inert diaphragms (e.g., PTFE-lined) and corrosion-resistant body materials, these valves resist degradation even under prolonged exposure.

 

Our Certificate

 

productcate-1-1

 

Packaging and shipping

 

 

productcate-716-385

 

FAQ

Q: How does the pneumatic operation work?

A: The valve is topped with a pneumatic actuator (usually stainless steel or engineered plastic) containing a piston or diaphragm. Compressed air is directed into chambers within the actuator via a control signal, pushing the piston down to close the valve or releasing the pressure to allow a spring to open it (or vice-versa, depending on design), enabling fast and automated control.

Q: What are the main advantages of pneumatic operation over manual?

A: Pneumatic operation allows for remote control, integration into automated process systems (PLCs), precise timing for batch processing, and operation in hard-to-reach or hazardous locations, significantly improving efficiency and safety over manual operation.

Q: What is meant by "Normally Open" (NO) and "Normally Closed" (NC) configurations?

A: These terms describe the valve’s fail-safe or resting state when no air pressure or power is applied. A "Normally Closed" (NC) valve is held shut by a spring and opens with air pressure. A "Normally Open" (NO) valve is held open by a spring and closes with air pressure. A "Double Acting" configuration uses air pressure to both open and close the valve.

Q: What peripheral components are needed to operate a pneumatic valve?

A: To function, a pneumatic valve requires a clean, dry source of compressed air, a solenoid valve (to direct the air flow based on an electrical signal), and usually position limit switches or a control top unit to provide feedback to the control system about the valve's current status.

Q: What pressure and temperature limits apply to the pneumatic actuator?

A: The actuator generally requires a specific range of compressed air (typically 60 to 100 PSI or 4 to 7 bar). The temperature limits for the actuator itself are usually much lower than the process fluid's temperature (e.g., maximum 140°F/60°C), requiring care in installation if dealing with very hot process lines.

Q: How do these valves integrate with Clean-in-Place (CIP) systems?

A: The automated nature is crucial for CIP/SIP cycles, allowing the system PLC to automatically sequence cleaning steps (e.g., directing sanitizer flow, controlling water temperature) without manual intervention, ensuring consistent and validated cleaning procedures.

We're well-known as one of the most professional pneumatic sanitary diaphragm valve manufacturers and suppliers in China for over 15 years. If you're going to buy high quality pneumatic sanitary diaphragm valve made in China, welcome to get pricelist and quotation from our factory. We also accept customized orders.

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