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Sanying Fluid Equipment Co., Ltd. : Your Professional 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 Sanitary Diaphragm Valve
 
01/

Hygienic design
The most significant advantage is their compliance with sanitary & BPE standards. The diaphragm completely isolates the process fluid from the valve body and actuator, reducing contamination risk and block body designs minimize dead legs.

02/

Ease of cleaning
These valves are designed for easy cleaning & full drainability, a critical feature in pharmaceutical applications where sterility is non-negotiable. Their smooth surfaces and minimal dead legs make CIP/SIP processes highly effective.

03/

Precise flow control
When sized and applied properly, sanitary diaphragm valves are excellent for throttling applications, offering smooth and precise control over fluid flow.

04/

Corrosion resistance
Materials like stainless steel and USP Class VI PTFE & EPDM diaphragms ensure resistance to aggressive cleaning agents and corrosive process fluids.

 

Product Parameters

 

Product name

Sanitary Pneumatic 3 way 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

 

Clamped Manual Straight Sanitary Diaphragm Valve

 

Application of Sanitary Diaphragm Valve

Food manufacturing industry
Sanitary diaphragm valves are widely used in food, wine, beverage, dairy products and other production processes due to their simple structure, convenient loading and unloading, flexible operation, and low fluid resistance. They are used to control the flow of water, gas, finished oil and corrosive media.

 

Biochemical pharmaceutical industry and biotechnology
In these industries, the anti-pollution performance of sanitary diaphragm valves is particularly important. A closed space is formed inside the valve to prevent the fluid in the pipeline from mixing with air, dust and impurities in the environment, thereby preventing contamination and cross infection.

 

Fine chemicals and bioengineering
Sanitary diaphragm valves can adapt to a variety of media, including gas, liquid, high-viscosity fluid, etc., so they are also widely used in these industries.

 

Our Certificate

 

productcate-1-1

 

Packaging and shipping

 

 

productcate-716-385

 

FAQ

Q: Why are these valves preferred in the food and pharmaceutical industries?

A: They are the preferred choice because the diaphragm completely isolates the process media from the operating mechanism and the outside environment, preventing contamination and ensuring product purity. Their design allows for effective Clean-In-Place (CIP) and Sterilize-In-Place (SIP) procedures.

Q: How does a sanitary diaphragm valve work?

A: The valve is typically closed when the diaphragm is pushed down against the valve body's seat. To open the valve, an actuator (manual, pneumatic, or electric) lifts the stem, which in turn lifts the diaphragm, allowing fluid to flow through the unobstructed path.

Q: What materials are typically used for the valve body and diaphragm?

A: The valve body is commonly made from forged 316L stainless steel for superior corrosion resistance and a low-porosity surface that can be highly polished. Diaphragms are made from durable, food-grade elastomers like EPDM, PTFE, or FKM, selected based on the media and temperature requirements.

Q: What certifications should I look for when selecting a sanitary diaphragm valve?

A: It is crucial to look for certifications such as FDA, 3-A Sanitary Standards, and EHEDG compliance, which ensure the materials and design meet stringent hygienic and safety requirements for relevant industries.

Q: Are there different types of sanitary diaphragm valves?

A: Yes, the primary types are weir-style and straight-through. Weir-style uses a raised saddle for the diaphragm to seal against, offering better control and durability in general applications, while the straight-through design provides an unobstructed flow path, ideal for viscous fluids or slurries.

Q: Can sanitary diaphragm valves be automated?

A: Yes, many sanitary diaphragm valves can be fitted with pneumatic or electric actuators to integrate them into automated process control systems, offering high controllability and consistency.

Q: What pressure and temperature limits do they typically handle?

A: Most standard sanitary valves can handle pressures in the range of 10–15 bar (around 150-230 psi). Temperature ratings vary based on the diaphragm material; for example, PTFE diaphragms are heat-resistant for SIP cycles often exceeding 135°C (275°F).

Q: How are they typically connected to the pipeline?

A: Common connection types in sanitary applications include Tri-Clamp, butt weld, or tube fittings, which are designed for quick assembly/disassembly and crevice-free unions.

Q: What are the most important maintenance tips?

A: Regular inspection of diaphragms for signs of wear or damage is vital, as they are the most critical wear component. Ensure proper installation to allow for self-draining, store spare diaphragms correctly in a dry place, and avoid overtightening the handwheel during operation.

Q: Can these valves handle viscous fluids or slurries?

A: Yes, their design helps prevent blockages and keeps the flow smooth, even with thicker materials or fluids containing solid particles. Straight-through configurations are particularly suited for these media.

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

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