Compression Tube Coupler Yoebor 304 3/8″ OD x 1/4″ NPT Adapter

Description

Product Overview

The Yoebor 304 compression tube coupler is engineered for demanding industrial applications where reliability and durability are paramount. Crafted from high‑grade 304 stainless steel, the coupler offers exceptional corrosion resistance, ensuring a long service life even in harsh chemical environments. Its double‑ferrule design creates a seal that is both leak‑free and capable of withstanding pressures up to 20 MPa (approximately 2,900 psi), making it suitable for a wide range of hydraulic and pneumatic systems.

Each unit measures 1.6 × 0.6 × 2.2 inches and weighs just 0.09 kg, providing a compact footprint without sacrificing strength. The 3/8″ outer‑diameter tube interface pairs seamlessly with standard hard tubing such as steel, copper, or alloy pipes, while the 1/4″ NPT female thread offers a secure connection to a variety of fittings and valves. The product is supplied in a convenient pack of two, allowing users to quickly assemble multiple connections or keep a spare on hand for future maintenance.

Designed with precision machining, the coupler’s threads conform to NPT (National Pipe Thread) standards, guaranteeing compatibility with a broad spectrum of industry‑standard components. The inclusion of a double ferrule not only enhances sealing performance but also simplifies installation: technicians can achieve a tight, repeatable fit with just a few turns of the compression nut, reducing assembly time and minimizing the risk of overtightening.

Usage

In hydraulic systems, the Yoebor compression coupler excels at joining rigid tubing to high‑pressure pumps, actuators, and control valves. Its ability to maintain a seal under temperatures ranging from –50 °C to 450 °C enables use in both cryogenic and high‑temperature processes, such as oil refining, chemical synthesis, and metalworking. The coupler’s robust construction also makes it ideal for pneumatic applications, where rapid pressure changes are common, including air‑driven tools, automation equipment, and HVAC systems.

Because the coupler is designed specifically for hard tube materials, it is not recommended for flexible hoses without the use of a compression insert bush. When paired with the appropriate insert, the coupler can be adapted to connect to softer hoses, expanding its versatility across a broader range of installations. This flexibility allows engineers to standardize on a single fitting solution for both rigid and semi‑rigid piping networks.

Installation is straightforward: slide the ferrules onto the tube, insert the tube into the coupler body, and tighten the compression nut until the ferrules are evenly compressed. The result is a secure, leak‑free joint that can be inspected visually for proper seating. Routine maintenance involves simply loosening the nut, inspecting the ferrules for wear, and re‑tightening as needed, making the coupler a low‑maintenance choice for long‑term operation.

Why Choose Us

Yoebor is a trusted brand in the industrial fittings market, known for rigorous quality control and adherence to international standards. Each compression coupler undergoes a series of tests, including pressure cycling, corrosion resistance, and dimensional verification, to ensure that it meets or exceeds the specifications required for critical applications. This commitment to quality translates into confidence for end‑users who rely on consistent performance under demanding conditions.

Our couplers are manufactured using precision CNC machining, which guarantees tight tolerances and uniform thread geometry. This precision reduces the likelihood of installation errors and helps maintain the integrity of the seal over the product’s lifespan. Additionally, the use of 304 stainless steel provides a balance of strength, ductility, and resistance to oxidation, making the coupler suitable for both indoor and outdoor installations.

Customer support is a cornerstone of the Yoebor experience. Our technical team is available to assist with product selection, installation guidance, and troubleshooting. Whether you are a seasoned engineer or a maintenance technician, you can rely on our expertise to ensure that the coupler integrates seamlessly into your system.

Key Features

• Double‑ferrule design delivers a leak‑free seal even at high pressures.
• 304 stainless steel construction resists corrosion and extreme temperature variations.
• Standard 3/8″ OD tube size and 1/4″ NPT female thread ensure broad compatibility.
• Compact, lightweight design simplifies installation in tight spaces.
• Dedicated Yoebor technical support provides installation assistance and after‑sales service.

FAQ

What types of tubing can I use with this coupler?

The coupler is intended for hard tubing such as stainless steel, copper, or alloy pipes with an outer diameter of 3/8″. For flexible hoses, a compression insert bush is required to achieve a proper seal.

Can this fitting handle high temperatures?

Yes, the coupler operates safely from –50 °C up to 450 °C, making it suitable for both cryogenic and high‑temperature industrial processes.

What is the maximum working pressure?

The product is rated for pressures up to 20 MPa (approximately 2,900 psi), which covers most hydraulic and pneumatic system requirements.

How do I ensure a proper installation?

Insert the ferrules onto the tube, push the tube fully into the coupler body, and tighten the compression nut evenly until the ferrules are compressed. Verify that the tube is fully seated and that the nut is snug but not overtightened.

Is there a warranty or guarantee?

Yoebor offers a limited one‑year warranty covering manufacturing defects. For any issues, contact our customer service team for replacement or technical assistance.