SPU Series Stainless Steel Straight Union Fittings

Features & Key Specifications

Features & Key Specifications of Our SPU Series:

Simple and Reliable Tube-to-Tube Connection:

This straight union fitting allows you to connect two tubes of the same diameter quickly and easily, creating a strong, leak-proof seal.

Premium Stainless Steel Construction:

Available in both 304 and 316 stainless steel, these fittings offer exceptional resistance to corrosion, chemicals, and high temperatures, making them ideal for washdown environments.

Comprehensive Size Options:

We stock a full range of sizes to fit any system.

Tube OD (Metric): 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm

Tube OD (Inch): 5/32", 1/4", 5/16", 3/8", 1/2"

Food-Grade & Oil-Free Design:

Manufactured to be oil-free and compliant with the Food Hygiene Law, our food grade union fittings are safe for use in sanitary applications.

High-Performance FKM O-Ring:

Equipped with an FKM (Viton) O-ring that provides excellent resistance to steam, chemicals, and temperatures ranging from -20°C to 140°C.

Application Fields

The Standard for In-Line Tube Connections:

Extending Tube Runs: Easily extend a pneumatic line to reach a distant component.

Repairing Damaged Lines: A quick and effective way to repair a kinked or cut section of tubing by using it as a tube splicer.

Modular Machine Building: Connecting tubing between different machine sections or modules.

Food & Beverage Processing: A hygienic stainless steel union for connecting tubing on processing and packaging lines.

Technical & Selection Guide

When to Use a Straight Union

A straight union is the most fundamental of all tube-to-tube fittings. It is your go-to solution whenever you need to:

Connect two separate lengths of tubing.

Repair a damaged section of a tube by cutting out the bad part and splicing the two good ends together.

For connecting two tubes of different sizes, you would need a Reducer Union fitting.

FAQ

Frequently Asked questions

Q: What is a "union" fitting?

A: In pneumatics, a "union" is a fitting that is designed to connect a tube to another tube, as opposed to a "connector" which typically connects a tube to a threaded port.

Q: How strong is the connection?

A: The internal stainless steel gripping claws provide a very strong hold on the tubing, ensuring it will not pull out under the rated working pressure.

Q: Can this fitting be used in a washdown environment?

A: Yes, the 316 stainless steel construction is designed to withstand the water and cleaning chemicals used in industrial washdown procedures, making it a perfect choice for the food and beverage industry.