Sanitary Unions

Sanitary Union Fittings Supplier in China

  • 15 + Years Manufacturer, based in China
  • Trusted by global OEMs & valve wholesalers
  • Custom Hygienic Union Fittings
  • Fast delivery · Low MOQ · ISO 9001 Certified

Leading Supplier of Sanitary Union Fittings in China

Sanitary unions are hygienic fittings that connect tubing and equipment in industries where cleanliness, safety, and easy maintenance are essential. They provide a secure, leak-free, easily detachable connection and support CIP (Clean-In-Place) / SIP (Sterilize-In-Place) without compromising product integrity.

At Beyond Fluid, we supply high-quality sanitary unions engineered for durability and consistent performance, compliant with ISO/IDF, RJT, SMS, 3A, and DIN standards.

We are the trusted partner for wholesalers, distributors, and OEMs.

Specification:

  • Size: 1/2″-4″/DN10-DN100
  • Material: SS316L/1.4404, SS304/1.4301
  • Standard: DIN, SMS, 3A, RJT, IDF, IS0, MARCON
  • Seal Gasket: Silicone, EPDM, NBR
  • Surface Finish: inside Ra ≤ 0.8 μm, outside Ra ≤ 1.6 μm 
  • Working Temperature: -10°C to 150°C (EPDM),-20°C to 120°C (SILICONE) 
  • Pressure Range: 150 psi (10 bar) to 300 psi (20 bar)
  • Product Type: Nut, Male, Liner, Expanding male, Blind nut

Hot-Selling Types of Hygienic Unions

3A Sanitary Unions
3A Sanitary Unions

  • Size: 1" – 4" / DN10 – DN100
  • Material: SS316L / 1.4404
  • Standard: 3A Sanitary Standard

DIN Sanitary Unions
DIN Sanitary Unions

  • Size: 1" – 4" / DN10 – DN100
  • Material: SS316L / 1.4404
  • Standard: DIN Sanitary Standard

SMS Sanitary Unions

  • Size: DN25 – DN100
  • Material: SS316L / 1.4404
  • Standard: SMS Sanitary Standard

ISO/IDF Sanitary Unions
ISO/IDF Sanitary Unions

  • Size: 1" – 4" / DN25 – DN100
  • Material: SS316L / 1.4404
  • Standard: ISO / IDF Standard

MARCON Sanitary Unions

  • Size: 1" – 4"
  • Material: SS316L / 1.4404
  • Standard: MARCON Standard

RJT Sanitary Unions

  • Size: 1" – 6" / DN25 – DN100
  • Material: SS316L / 1.4404
  • Standard: RJT Sanitary Standard

Hygienic UnionsDIN Union Coupling

Sanitary Union Pipe Fittings

Sanitary unions are hygienic pipe fittings that securely connect two sections of tubing or equipment while allowing easy disassembly and cleaning. It mainly consists of four parts:

  • Nut — Tightens the assembly, holding all components securely in place.
  • Weld Liner — The inner ferrule welded to one pipe end; provides a smooth internal bore for product flow and mates against the seal.
  • Seal Ring — Provides a tight, leak-free seal between the ends.
  • Weld Male — The outer ferrule welded to the other pipe end; compresses the seal against the liner when tightened by the nut.

Features of Hygienic Unions

  • Hygienic design. Smooth surfaces with no crevices to trap product, enabling easy cleaning and sterilization.
  • Quick assembly & disassembly. Typically three main parts (male end, liner/female end, and a nut) for fast connect/disconnect.
  • Leak-free seal. A gasket between the two ends maintains a tight, sanitary seal.
  • Durability. Commonly stainless steel 304 or 316L for corrosion resistance and long service life.
  • Versatility. Available in multiple standards (ISO/IDF, SMS, DIN, RJT, 3A) to meet global industry requirements.
  • Safety & Compliance. Designed to meet strict food, beverage, and pharmaceutical hygiene regulations.
DIN Sanitary Unions

Applications of Sanitary Unions

Application Area Use
Food & Beverage Dairy, juice, soft drinks, brewing, wine, and bottled water systems
Pharmaceutical & Biotechnology Sterile fluid transfer, cleanroom piping, CIP/SIP processes
Dairy Processing Milk collection, pasteurization, hygienic transport lines
Cosmetics & Personal Care Production of creams, gels, and lotions under hygienic conditions
Chemical Processing Corrosion-resistant fluid handling in sanitary systems
Brewing Industry Fermentation tanks, transfer lines, and kegging systems

Who We Are

Beyond Fluid, Your Reliable Sanitary Fittings Manufacturer

Beyond Fluid has over 15 years of experience supplying stainless steel instrument valves and fittings to wholesalers, distributors, and large contractors. We offer reliable quality, excellent service, on-time delivery, and competitive prices. Our commitment to advanced technology, precision engineering, and strict quality standards ensures we meet the diverse needs of customers worldwide.

We take pride in producing high-quality instrumentation valves and fittings. Our comprehensive range of products is designed for optimal performance and durability, with both standard and customized solutions. We aim to be your long-term trusted partner to expand your market presence.

15+

Years of Experience

Why Choose Us

Reliability. Consistency. Integrity

Quality Assurance

When you choose Beyond Fluid, you ensure precision and reliability, backed by our strict Quality Assurance Program.

on-time delivery

Beyond Fluid ensures reliability with a 99.99% on-time delivery rate and quick response to urgent orders through stocked materials.

Competitive pricing

Our robust manufacturing and supply chain enable us to offer competitive prices, helping clients expand their market reach.

professional service

Our expert engineers offer design, CAD, and technical support, while our trained sales team ensures fast, efficient 24-hour responses.

Testimonials

What Our Clients Say

Thank you for your cooperation!
A Large Wholesaler From USA

 “We’re literally satisfied with Beyond Fluid’ always on-time delivery and exceptional handling of requests. Their commitment to timely service is evident and consistently reliable. Their swift response and guaranteed on-time delivery make them my preferred choice.”

A Brand Manufacturer From Germany

“We can always count on Beyond Fluid’s quality. During a 2018 visit, their advanced facilities and stringent quality controls made a lasting impression on us. Their timely responses to requests for drawings or technical support further solidify my trust. We really love to place our orders to those suppliers like Beyond Fluid.”

FAQ

Frequently Asked Questions.

Here are a few real most popluar questions from our clients.

Yes, Beyond Fluid's instrumentation ball valves are fully compatible with other big brands, like Swagelok and can be easily integrated into existing systems, offering customers flexibility and ease of use.

Sure, we provide OEM services for several leading global brands in instrumentation valve and fittings, significantly reducing their production costs and helping them gain greater market share.

Our instrumentation ball valves follow strict quality control protocols and meet industry-leading standards, ensuring consistent performance and dependable reliability.

If you receive defective products, no worries! We offer a customer-friendly policy: we’ll either send a free replacement or issue a credit right away. We're committed to making things right for you.

Sure, we can provide samples of instrument ball valves or fittings for evaluation firstly.    Besides, we have the capaiblity to manufacture according to specific requirements.

Sure, we can provide samples of instrument ball valves or fittings for evaluation firstly.    Besides, we have the capaiblity to manufacture according to specific requirements.

Thanks to our excellent supply chain management, and more than 15 years of experience in production, most of our wholesalers and distributors are happy with our prices.

Our typical payment term is 30% T/T in advance, balance payment against BL copy. But for serious buyers/companies, we’re open to discussing more flexible payment terms.

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