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Quick Disconnect Fittings

Fast, Safe Hydraulic Connections from Union Hydraulics

When you’re working with hydraulic systems, time matters. So does safety. That’s exactly why quick disconnect fittings exist.

At Union Hydraulics, we supply high-quality quick disconnect fittings that allow you to connect and disconnect hydraulic lines quickly—without tools, without fluid loss, and without creating a mess on the shop floor or jobsite. Whether you’re running heavy equipment, servicing mobile machinery, or managing an industrial system, the right coupling can save you hours of downtime and prevent costly contamination.

If you're not sure which fitting you need, give us a call. We’ll walk you through it.

What Are Quick Disconnect Fittings?

Quick disconnect fittings—also called quick couplers or quick connects—are designed to join hydraulic lines quickly and securely. They typically consist of two halves:

Male (plug or nipple)
Female (socket or coupler body)

When connected, they allow hydraulic fluid to flow through the system. When disconnected, internal valves close automatically to prevent fluid loss and contamination.

That means:

No draining lines
No wrenching fittings apart
No unnecessary oil spills

If you've ever had to change out an attachment on a skid steer, swap a hydraulic tool, or isolate a section of a system for maintenance, you've probably relied on quick disconnects.

Why Quality Matters in Hydraulic Quick Disconnects

Not all quick disconnect fittings are built the same.

In hydraulic systems, you’re often dealing with high pressures—sometimes 3,000 to 5,000 PSI or more. A poorly manufactured coupling can lead to:

Leaks
Pressure drops
Premature wear
Seal failure
Costly downtime

At Union Hydraulics, we only supply fittings designed for real-world industrial use. Our quick disconnects are built for durability, pressure integrity, and long service life.

That’s critical in environments like:

Construction equipment
Forestry machinery
Agricultural equipment
Manufacturing facilities
Hydraulic test benches

When you’re running high-pressure hydraulics, you can’t afford guesswork.

Types of Quick Disconnect Fittings We Supply

Depending on your application, you may need a specific style of coupling. Here are the most common types we help customers select:

ISO 7241 Series A (Agricultural Style)
- Common in agricultural and mobile equipment
- Widely compatible
- Durable and cost-effective
ISO 7241 Series B (Industrial Style)
- Popular in industrial hydraulic systems
- Higher flow performance in many cases
- Frequently used in manufacturing
Flat Face (ISO 16028)
- Minimal fluid spillage during disconnect
- Easier to clean
- Ideal for environments where contamination control is critical
- Flat face couplings are especially popular in construction and rental equipment because they reduce oil loss and keep dirt out of the system.
High-Pressure Screw-to-Connect
- Designed for very high-pressure systems
- Secure threaded engagement
- Used in hydraulic jacking and specialty applications

If you're unsure which standard your equipment uses, that’s where we come in. Tell us the machine, pressure rating, and thread type—we’ll help you identify the right match.

Key Factors to Consider Before You Buy

Choosing the correct quick disconnect fitting isn’t just about size. Here’s what we typically walk customers through:

Pressure Rating

Always verify the maximum working pressure of your system. Installing an underrated fitting is one of the fastest ways to create a failure point.

Flow Requirements

A coupling that’s too small can restrict flow and reduce performance. We help you match coupling size to your system’s GPM requirements.

Thread Type

Common thread types include:

NPT
ORB
JIC
BSPP
Metric

Using the wrong thread can lead to leaks or damaged ports. If you're not sure what you have, send us a picture or measurements—we deal with this every day.

Material

Most couplings are carbon steel with zinc plating, but stainless steel and brass options are available for corrosive environments or specialty applications.

Environment

Are you working outdoors? Around dirt and debris? In food-grade or washdown areas? Those details matter.

Benefits of Using the Right Quick Disconnect Fitting

When properly selected and installed, quick disconnect fittings provide:

Faster equipment changeovers
Reduced downtime
Improved safety
Less fluid loss
Cleaner maintenance procedures

For example, if you operate multiple hydraulic attachments, the right couplers can turn a 20-minute hose swap into a 2-minute changeover. Over the course of a year, that adds up.

In industrial environments, minimizing fluid contamination can significantly extend pump and valve life. That’s real savings.

Installation & Maintenance Tips

Even the best-fitting won’t perform properly if they’re installed incorrectly. Here are a few practical guidelines:

Always depressurize the system before disconnecting
Inspect seals and O-rings regularly
Keep mating surfaces clean
Replace worn couplings before they begin leaking

If you’re experiencing difficulty connecting under pressure, you may need a specific style designed for residual pressure situations. Let us know what you’re running—we can guide you.

Why Buy Quick Disconnect Fittings from Union Hydraulics?

At Union Hydraulics, we don’t just sell parts—we solve hydraulic problems.

Our team works with contractors, maintenance managers, equipment operators, and plant supervisors every day. We understand real-world hydraulic challenges because we’ve seen them firsthand.

When you call us, you’re not talking to a generic order desk. You’re talking to someone who understands: