Reducing Union

Find high-quality reducing union fittings for diverse industrial needs. We offer extensive wholesale options, ensuring competitive pricing and reliable supply. Our fittings provide secure connections and durable performance. Stock up on essential components. Contact us for bulk orders and expert support.

Reducing Union Wholesale

Source top-grade reducing union fittings in bulk. We offer competitive wholesale pricing for diverse industrial applications. Ensure reliable connections and efficient fluid transfer. Explore our extensive inventory and secure your supply today. Contact us for personalized quotes and expert assistance on your wholesale reducing union needs.

reducing union fitting

why choose Reducing Union?

  • Versatile Size Transitions: Reducing unions enable seamless connections between pipes of different sizes, simplifying system design and reducing the need for multiple fittings. This adaptability saves time and lowers installation costs.
  • Enhanced System Efficiency: By providing a smooth transition, reducing unions minimize turbulence and pressure drops within fluid or gas systems. This contributes to improved flow rates and overall system efficiency.
  • Durable and Leak-Proof Connections: Engineered for reliability, reducing unions create secure, leak-proof seals, ensuring long-term performance and preventing costly downtime. High quality materials provide lasting durability.
  • Simplified Installation and Maintenance: Reducing unions streamline installation processes by eliminating complex pipe configurations. Their straightforward design also facilitates easy maintenance and repairs, reducing labor costs and downtime.

DF Hydraulics: Your Leading Reducing Union Manufacturer

DF Hydraulics: a leading hydraulic fitting manufacturer specializing in reducing unions. We deliver precision-engineered solutions for seamless size transitions in hydraulic systems. Our commitment to quality ensures durable, leak-proof connections. As your trusted partner, we offer reliable wholesale supply and expert support. Contact us for your reducing union needs.

brass reducing union

brass reducing union

We offer high-quality brass reducing unions, essential for reliable size transitions in plumbing and industrial systems. Our brass fittings ensure durable, leak-proof connections, ideal for diverse applications. Explore our extensive inventory for competitive wholesale pricing and secure your supply of these crucial components. Contact us today for bulk orders and expert assistance.

bulkhead reducing union

bulkhead reducing union

We supply high-quality bulkhead reducing unions, ideal for connecting pipes of different sizes through a panel or barrier. Our unions ensure secure, leak-proof connections in various applications. Available in diverse materials and sizes, we cater to your specific plumbing and industrial needs.

compression reducing union

compression reducing union

We provide compression reducing unions, designed for secure and efficient pipe transitions. Our fittings minimize size discrepancies, ensuring a leak-free, robust connection. Ideal for various plumbing and industrial applications, our unions offer reliable performance and simplified installation.

reducing union pipe fitting

reducing union fitting

Our reducing union pipe fittings provide secure connections between pipes of different sizes. They simplify plumbing adjustments, offering a leak-free seal and durable performance. Available in various materials and sizes, they’re ideal for both residential and industrial applications, ensuring efficient flow and easy maintenance.

reducing union tee fittings

reducing union fitting

Our reducing union tee fittings provide versatile connections, seamlessly joining pipes of differing sizes. These fittings simplify complex plumbing setups, minimizing the need for multiple adapters. Engineered for durability and leak-free performance, they ensure efficient fluid or gas transfer in various industrial and residential applications.

swagelok reducing union

swagelok reducing union

We provide a wide range of Swagelok reducing union fittings, designed for reliable connections between tubes of different sizes. These fittings ensure leak-tight performance and are available in various materials and configurations to meet diverse application requirements.

flare reducing union

flare reducing union

When it comes to flare reducing unions, we offer a selection designed for reliable connections between different sized flared tubes. These fittings are commonly used in applications like refrigeration, automotive, and hydraulic systems. Our flare reducing unions provide a secure, leak-resistant seal, ensuring efficient fluid transfer. They are available in various materials, typically brass, to meet diverse industry needs.

stainless steel reducing unions

Stainless Steel Reducing Unions

We offer a wide selection of stainless steel reducing unions, engineered for reliable and corrosion-resistant connections in diverse fluid systems. These fittings, often made from 316 stainless steel, provide a durable solution for joining tubes of differing sizes, ensuring leak-free performance in high-pressure and temperature applications across various industries.

Reducing Union FAQs

What Is reducing union?

A reducing union is a type of pipe or tube fitting that connects two tubes or pipes of different sizes. Essentially, it allows for a transition between a larger diameter tube and a smaller diameter tube within a piping system. This is a crucial function in many fluid handling systems where varying flow rates or pressure requirements necessitate changes in pipe or tube size.

A reducing union is a type of pipe or tube fitting that connects two tubes or pipes of different sizes. Essentially, it allows for a transition between a larger diameter tube and a smaller diameter tube within a piping system. This is a crucial function in many fluid handling systems where varying flow rates or pressure requirements necessitate changes in pipe or tube size.

What Is reducing union made of?

Reducing unions, like many other pipe and tube fittings, are manufactured from a variety of materials to suit different application requirements.

Here are some of the most common materials:

  • Stainless Steel:
    • This is a very popular choice due to its excellent corrosion resistance, high strength, and ability to withstand high temperatures. 316 stainless steel is particularly common.   
  • Brass:
    • Brass is often used in applications where corrosion resistance is needed, but not to the same extreme as with stainless steel. It is also more cost-effective.
  • Carbon Steel:
    • Carbon steel is a strong and durable material, often used in high-pressure applications.   
  • Other Materials:
    • Depending on the specific application, other materials like Monel (a nickel alloy) may also be used for enhanced corrosion resistance in very demanding environments   

What Is reducing union used for?

Reducing unions are essential components in fluid systems, serving a very specific and important purpose. Here’s a breakdown of their primary uses:

Connecting Dissimilar Tube Sizes:

The core function of a reducing union is to join two tubes or pipes that have different diameters. This allows for transitions within a system where flow rates or pressure requirements necessitate changes in pipe size.   

Applications Across Industries:

These fittings are widely utilized in various industries where fluid or gas transfer is crucial. Some key areas include:

Instrumentation: For precise control and measurement of fluids.   

Chemical Processing: Handling corrosive or hazardous materials.   

Oil and Gas: In pipelines and processing facilities.

Hydraulic and Pneumatic Systems: Where varying pressures and flow are common.

Essentially, any system that requires a change in pipe diameter will likely use a reducing union.

Facilitating System Design:

They provide flexibility in system design, allowing engineers to incorporate different sized components as needed.

They can also be vital in situations where space is limited, providing a compact solution for transitioning between pipe sizes.   

Does reducing pipe size reduce flow?

Yes, reducing pipe size generally reduces flow. Here are some reasons why the reducer pipe size can reduce the flow.

1. Increased Friction:

When the diameter of a pipe decreases, the fluid flowing through it experiences increased friction against the pipe walls. This friction slows down the fluid’s velocity.

This increased friction results in a loss of pressure, which in turn reduces the overall flow rate.

2. Flow Rate and Area:

The flow rate of a fluid is directly related to the cross-sectional area of the pipe. A smaller pipe has a smaller cross-sectional area, meaning less fluid can pass through it in a given amount of time.

3. Velocity and Pressure:

While the velocity of the fluid may increase in a narrowed section of pipe (to maintain continuity), this increase in velocity is often accompanied by a decrease in pressure. This pressure drop contributes to the reduction in flow.

In essence, while the fluid may speed up in a smaller pipe, the overall volume of fluid that can pass through is reduced due to increased friction and a smaller cross-sectional area.

How to Tighten a Union Fitting?

Tightening a union fitting correctly is crucial to prevent leaks. Here’s a step-by-step guide about how you can tighten union fittings:

1. Preparation:

  • Inspect the Fitting:
    • Before tightening, carefully examine the union fitting for any damage, such as cracks, dents, or worn-out seals (like O-rings).
    • Ensure the mating surfaces are clean and free of debris.
  • Check the Seal:
    • If the union uses an O-ring or gasket, make sure it’s in good condition and properly seated.
    • If needed, apply a suitable lubricant (like silicone grease) to the O-ring to aid in sealing and prevent damage.
  • Alignment:
    • Ensure the pipes or tubes connected to the union are properly aligned. Misalignment can prevent a proper seal and lead to leaks.

2. Hand Tightening:

  • Start by Hand:
    • Begin by hand-tightening the union nut as far as you can. This ensures the threads are properly engaged and prevents cross-threading.
  • Even Pressure:
    • Apply even pressure while hand-tightening to ensure the union nut is threading straight.

3. Wrench Tightening:

  • Use the Correct Tools:
    • If necessary, use wrenches to further tighten the union nut. Use the correct size wrenches to avoid damaging the fitting.
    • When using wrenches, it is best practice to use two wrenches, one to hold the fitting in place, and the other to tighten the nut.
  • Avoid Over-Tightening:
    • Over-tightening can damage the fitting or the seal, leading to leaks.
    • Generally, a slight turn past hand-tight is sufficient.
    • For unions with O-rings, excessive force is rarely needed.
  • Test for Leaks:
    • After tightening, carefully test the connection for leaks by applying pressure to the system.
    • If a leak is detected, slightly tighten the union nut further. If the leak persists, disassemble the union and inspect the seal and mating surfaces.

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