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Sanying Fluid Equipment Co., Ltd. : Your Professional Sanitary Check 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.

 

Weld Manual Sanitary Check Valve

 

Benefits of Sanitary Check Valve

Dependable construction
Sanitary check valves should last long without failure, degradation, or frequent replacements. These valves should feature reliable designs and material compositions to ensure longevity and minimal maintenance.

 

Tight seal to prevent leakage
For sanitary applications in food and beverage processing and other industries, the potential for product leakage must be eliminated. You can address these hygienic concerns by selecting sanitary check valves that ensure tight seals.

 

Internal smoothness
Sanitary check valves are typically constructed with 316L stainless steel that has been polished internally to prevent buildup. There should be no internal edges or rough surfaces that could allow impurities or buildup to stick and cause metal degradation. There also shouldn’t be any internal crevices where potential contaminants can accumulate and cause unsanitary conditions.

 

Product Specifications

 

Parameter Item

English Description

Buyer's Key Reference

Structure Type

Swing type, Lift type

Swing for large flow; Lift for high precision

Nominal Diameter

DN15-DN300 (customizable)

DN15-DN40 recommended for lift type

Nominal Pressure

1-10Bar

PN1 recommended for high-pressure sterilization

Body Material

304/316L stainless steel

316L for corrosive medium

Seal Material

Si/EPDM/FKM

FKM for organic solvents; EPDM for high temperature

Opening Pressure

1-10Bar (customizable)

0.02MPa for low-pressure scenarios

Working Temperature

-40℃-200℃ (depends on seal)

Silicone: -20℃-120℃; FKM: -20℃-200℃

Connection Method

Quick-install, Flange, Welding

Quick-install for frequent maintenance

Certification

3A, FDA, GMP

Full certification for pharmaceutical industry

 

 

Application Of Sanitary Check Valve

Food And Beverage Processing

Food and beverage check valves prevent backflow and contamination by stopping fluids like coolants and cleaning agents from re-entering the production line. This ensures a smooth transition between processing stages and maintains high hygiene standards, safeguarding products.

 

Pharmaceutical Manufacturing

They ensure that fluids, such as cleaning agents and process solutions, do not re-enter the production line, maintaining sterile conditions.

 

Chemical Processing

In chemical processing, sanitary check valves are used to prevent backflow and contamination by ensuring that chemicals and process fluids do not re-enter upstream equipment or pipelines. This is critical for maintaining the purity of chemical reactions, preventing cross-contamination between different chemical batches, and protecting sensitive equipment from damage or corrosion caused by unintended fluid exposure.

Clamped Manual Sanitary Check Valve

 

Our Certificate

 

productcate-1-1

 

Packaging and shipping

 

 

productcate-716-385

 

FAQ

Q: How does a sanitary check valve work?

A: Sanitary check valves work automatically without manual or external control by using the differential pressure of the media. Forward flow pressure pushes open the internal closing mechanism (disc or ball), and when flow stops or reverses, gravity or a spring mechanism forces the component back onto its seat to create a tight seal and block backflow.

Q: What are the main types of sanitary check valves?

A: The most common types used in sanitary applications are ball check valves and spring-assisted (or disc type) check valves. Ball checks use a free-moving ball as the closing member, while spring checks use a guided disc or piston and a spring to aid closure.

Q: Why are they considered "sanitary" or "hygienic"?

A: They are considered sanitary because their internal surfaces that contact the product are highly polished (e.g., to a 32 Ra finish or finer) and crevice-free to eliminate areas where bacteria or product residue could accumulate. They are also designed to be compatible with Clean-in-Place (CIP) and Sterilize-in-Place (SIP) processes.

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

A: The valve body and internal parts are usually constructed from 304 or 316L stainless steel for durability and corrosion resistance. Seals and O-rings are made from FDA-approved elastomers like EPDM, Viton, or Silicone to ensure non-toxicity and compatibility with consumable products.

Q: Can these valves be installed in any orientation?

A: Installation orientation depends on the design. Gravity-operated ball check valves must be installed vertically with upward flow for the ball to seat properly. Spring-assisted models offer more flexibility and can typically be installed horizontally or vertically because the spring forces the closure.

Q: Are they easy to maintain?

A: Yes, sanitary check valves typically use sanitary connections like tri-clamps, which allow for quick and easy disassembly for inspection, cleaning, and replacement of internal parts like seals or balls without removing the entire valve body from the line.

Q: How do sanitary check valves differ from industrial check valves?

A: The primary differences lie in materials and finish: sanitary valves use 304 or 316L stainless steel with a highly polished, crevice-free interior surface, while industrial valves may use materials like cast iron or brass and have rougher internal surfaces that can harbor contaminants.

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

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