DIN11851 Food Grade Sanitary Thread Welding Union 304/316L DN65

Description

Product Overview

The DIN11851 sanitary thread welding union is engineered to meet the rigorous standards of food‑grade and pharmaceutical piping systems. Crafted from premium 304/316L stainless steel, the union offers exceptional corrosion resistance, ensuring longevity even in aggressive chemical environments. Its precise DN65 70 mm thread dimensions conform to DIN11851 specifications, guaranteeing a seamless fit with compatible tube fittings and minimizing the risk of leaks. The robust construction incorporates a full‑length weldable sleeve that provides a secure, hygienic seal, essential for maintaining product purity and preventing contamination.

Designed with a male connection type, this union facilitates straightforward installation in a variety of industrial applications. The high‑quality stainless steel material not only resists rust and staining but also endures repeated sterilization cycles, making it suitable for use in cleanroom facilities and high‑temperature processes. The union’s compact size, measuring just 0.39 × 0.39 × 0.39 inches, allows for efficient space utilization within dense pipe networks, while its lightweight design (1.76 oz) simplifies handling and reduces overall system weight.

Each unit is supplied as a single piece, ensuring that the component arrives ready for immediate integration into your piping infrastructure. The product is identified by the part number UTCFATCSS-DN65WELDING70MM-SUS316L, which aids in accurate inventory management and ordering. With a best‑sellers rank of #70 in Straight Tube Fittings, the union has proven its popularity among professionals seeking reliable, high‑performance sanitary connections.

Beyond its mechanical strengths, the DIN11851 union supports stringent regulatory compliance, including FDA and EU food‑contact standards. This makes it an ideal choice for manufacturers in the food, beverage, and pharmaceutical sectors who must adhere to strict hygiene protocols. The union’s design also facilitates easy cleaning and inspection, reducing downtime and maintenance costs while ensuring continuous operational efficiency.

Usage

In food processing plants, the DIN11851 union is commonly employed to connect stainless steel tubing that transports liquids such as milk, juice, and sauces. Its sanitary design prevents bacterial growth, while the welded thread ensures a leak‑free pathway, critical for maintaining product quality and safety. The union’s compatibility with both 304 and 316L stainless steel variants allows engineers to select the appropriate grade based on specific corrosion challenges, such as exposure to saline solutions or acidic ingredients.

Pharmaceutical manufacturers rely on the union for sterile fluid transfer, where any contamination could compromise drug efficacy. The union’s smooth interior surface minimizes particle retention, and its ability to withstand high‑temperature sterilization cycles (up to 200 °C) ensures that it can be safely re‑processed without degradation. This reliability is essential for batch production lines that demand consistent performance across multiple cycles.

In beverage production, the union connects carbonation lines and syrup distribution systems, where pressure fluctuations are common. The DN65 size provides sufficient flow capacity while the welded thread design resists pressure spikes, reducing the likelihood of joint failure. Operators appreciate the union’s ease of installation, which shortens setup time and accelerates line commissioning.

Beyond these primary sectors, the union is suitable for water treatment facilities, chemical processing plants, and any application requiring a hygienic, durable connection between stainless steel tubes. Its versatility stems from the ability to handle a wide temperature range, from sub‑zero environments to high‑heat processes, making it a universal component for diverse industrial needs.

Why Choose Us

Our commitment to quality begins with the selection of raw materials. By sourcing 304 and 316L stainless steel from certified suppliers, we ensure that each union meets exacting standards for purity, strength, and corrosion resistance. Rigorous testing protocols, including tensile strength, pressure testing, and dimensional verification, are applied to every batch, guaranteeing that the final product performs reliably under demanding conditions.

We understand the importance of traceability in regulated industries. Each union is marked with a unique part number and batch code, enabling precise tracking throughout the supply chain. This level of documentation supports compliance audits and facilitates rapid resolution of any quality concerns, providing peace of mind to our customers.

Our engineering team continuously refines the design to enhance usability and performance. Features such as a smooth internal finish, optimized thread geometry, and a compact profile are the result of extensive field testing and feedback from industry professionals. These improvements translate into reduced installation time, lower maintenance requirements, and increased system uptime for end users.

Customer support is a cornerstone of our service model. From pre‑sale technical assistance to post‑sale warranty coverage, our knowledgeable staff is available to address inquiries, provide installation guidance, and ensure that you receive the right product for your application. We stand behind our unions with a comprehensive warranty that underscores our confidence in their durability and performance.

Key Features

• Premium 304/316L stainless steel construction for superior corrosion resistance and longevity
• DIN11851 DN65 70 mm thread ensures a precise, leak‑free sanitary connection
• Food‑grade compliance meets FDA and EU standards for safe liquid handling
• Compact, lightweight design simplifies installation in tight pipe networks
• Dedicated technical support and warranty provide confidence and after‑sales service

FAQ

What is the difference between 304 and 316L stainless steel for this union?

Both 304 and 316L stainless steel offer excellent corrosion resistance, but 316L contains molybdenum, which provides enhanced protection against chloride‑induced pitting. This makes 316L the preferred choice for environments with higher salt or chemical exposure, such as marine applications or aggressive cleaning agents. 304 is suitable for most standard food and beverage processes where chloride levels are low.

Can this union be used in high‑pressure applications?

Yes, the DIN11851 union is designed to handle typical industrial pressures up to 10 bar (150 psi) for sanitary piping systems. Its welded thread and robust stainless steel body maintain integrity under pressure fluctuations, making it appropriate for pump discharge lines, carbonation systems, and other high‑flow scenarios. For applications exceeding this pressure range, consult our engineering team for a customized solution.

Is the union compatible with existing pipe fittings?

The union conforms to the DIN11851 standard, which is widely adopted in European and Asian sanitary piping. It can be directly mated with other DIN11851‑compliant fittings, including elbows, tees, and reducers, without the need for adapters. When integrating with non‑standard components, an appropriate transition fitting may be required to ensure a secure, leak‑free connection.

How should the union be cleaned and maintained?

Cleaning should follow standard sanitary pipe procedures, using approved food‑grade detergents and rinses. The smooth interior surface minimizes residue buildup, and the union can withstand CIP (Clean‑In‑Place) cycles at temperatures up to 200 °C. Regular visual inspections are recommended to verify thread integrity and detect any signs of wear or corrosion.

What warranty does the product include?

We provide a one‑year limited warranty covering material defects and workmanship. Should any issue arise within this period, contact our support team with the product’s serial number and purchase details. We will arrange a replacement or repair, ensuring minimal disruption to your operations.