The Lever-Actuated Tube Connector That Grips Without Distorting

The FasTest JXL is a lever-actuated external connector for straight, swaged, and expanded tubes in copper, steel, and aluminum. One pull of the lever makes a leak-tight connection to the outside of the tube — no threading, no fitting to install, and no tools — across a range that runs from 10 millitorr of vacuum up to 1,000 psi (69 bar).

The engineering problem the FasTest JXL solves is the tension between grip and distortion. Refrigeration tube is soft, and holding a connection at 1,000 psi takes real gripping force — but too much force ovals or crushes the tube and ruins the part being tested. The JXL’s stainless steel collets are built for exactly that trade-off, providing maximum grip with minimum distortion of the test piece, so the connection holds at pressure without deforming the tube.

Because the FasTest JXL connects to straight, swaged, and expanded tube features, one tool covers a mixed tube population rather than requiring a separate connector for each end type. That matters on lines where tube geometry varies by product or by supplier, and it reduces both the tooling count and the chance of an operator reaching for the wrong tool.

Seal replacement on the FasTest JXL is quick and straightforward, which minimises downtime and maintenance — and reduces the need to stock spare complete tools, since a worn seal can be changed rather than swapping the whole connector out of service.

The Problem the FasTest JXL Solves

Making a repeatable test connection to soft tube at high pressure puts several requirements in direct conflict:

• Grip and distortion pull against each other: A connection rated to 1,000 psi needs substantial gripping force, but copper and aluminum refrigeration tube deform easily. A connector that grips hard enough to hold can oval or crush the very part it is testing.

• Tube populations are rarely uniform: A single line may see straight, swaged, and expanded tube ends depending on the product or the supplier. Matching a dedicated connector to each end type multiplies tooling and creates opportunities to grab the wrong one.

• Seal service becomes downtime: Seals are consumables. If servicing one is slow, or means pulling a spare tool from inventory, the cost shows up as both downtime and carrying cost across a fleet of connectors.

• Deep vacuum and high pressure in one process: Refrigeration and industrial tube processing spans evacuation at deep vacuum through to high-pressure testing. Connectors that only cover one end of that range force a tool change mid-process.

The FasTest JXL addresses all four: stainless steel collets deliver maximum grip with minimum distortion, one tool covers straight, swaged, and expanded tube, seals replace quickly to keep tools in service, and the range runs from 10 millitorr to 1,000 psi.

Key Features 

Instant Connections to Copper, Steel, and Aluminum Tubes

The FasTest JXL connects to the copper, steel, and aluminum tube used throughout refrigeration and industrial applications. The connection is made externally, on the tube as it comes off the line, with no fitting to install and no tube preparation — so operators move from part to part at production speed.

Stainless Steel Collets — Maximum Grip, Minimum Distortion

This is the FasTest JXL’s defining feature. Stainless steel collets are engineered to provide maximum grip with minimum distortion of the test piece, resolving the central conflict in tube testing: the connection has to hold at up to 1,000 psi without ovaling, crushing, or marking soft tube. Stainless construction also stands up to the repeated cycling of a production environment without losing its grip characteristics.

Lever Handle Actuation

A lever handle makes the connection in one deliberate motion, giving consistent actuation force from operator to operator and cycle to cycle. Unlike a threaded fitting, there is no torque judgement involved — the lever either engages or it does not, which is what makes results repeatable across a shift.

Straight, Swaged, and Expanded Tube Coverage

The FasTest JXL connects to straight, swaged, and expanded tube features. On lines where tube geometry varies, one connector covers the full range instead of requiring a dedicated tool for each end type — reducing both tooling inventory and the risk of the wrong tool being used on a part.

Quick and Easy Seal Replacement

Seals on the FasTest JXL replace quickly and easily, which minimises downtime and maintenance effort. It also reduces tool inventory: because a worn seal can be changed rather than swapping the whole connector out of service, fewer spare tools need to be held to keep a line running.

Deep Vacuum to 1,000 psi in a Single Tool

The FasTest JXL spans from 10 millitorr (micron) of vacuum up to 1,000 psi (69 bar). That single range covers system evacuation at one end and leak and pressure testing at the other, so one connector serves the whole processing sequence without a tool change between steps.

Technical Specifications

Where the FasTest JXL Is Used

Refrigeration Tube Leak & Pressure Testing

The FasTest JXL connects directly to the copper, steel, and aluminum tube used throughout refrigeration assemblies for leak and pressure testing. The stainless steel collets hold at test pressure while keeping distortion of the tube to a minimum — which matters when the tube being tested is the finished product.

Evacuation and Charging

With vacuum capability down to 10 millitorr (micron), the FasTest JXL handles system evacuation as well as pressure work. One connector covers evacuation and charging alongside testing, rather than requiring separate tooling for the vacuum end of the process.

Mixed Tube-Feature Production Lines

Lines that see straight, swaged, and expanded tube ends benefit most from the JXL’s coverage. Instead of matching a dedicated connector to each tube geometry, one lever-actuated tool handles the full range — simplifying the station and reducing tooling inventory.

Industrial Tube Testing

Beyond refrigeration, the FasTest JXL is used across general industrial tube applications where an external connection needs to be fast, repeatable, and gentle on the tube — anywhere a soft or thin-wall tube has to be held at pressure without being deformed.

FasTest JXL vs. a Clamped or Compression Tube Connection

Frequently Asked Questions

Q: What is the FasTest JXL?

A: The FasTest JXL is a lever-actuated external connector for straight, swaged, and expanded tubes in copper, steel, and aluminum. It connects to the outside of the tube from 10 millitorr of vacuum up to 1,000 psi (69 bar), using stainless steel collets that grip firmly without distorting the tube.

Q: What does the FasTest JXL connect to?

A: Straight tube, swaged tube, and expanded tube — externally, with no fitting to install and no tube preparation required.

Q: What tube materials can the FasTest JXL be used with?

A: Copper, steel, and aluminum tubes of the kind used in refrigeration and industrial applications.

Q: How do the stainless steel collets prevent tube distortion?

A: The collets are engineered to deliver maximum grip with minimum distortion of the test piece. That balance is the point: a connection rated to 1,000 psi needs substantial gripping force, but soft copper or aluminum tube ovals or crushes if that force is applied poorly. The JXL’s collet design holds the tube securely while keeping deformation to a minimum.

Q: What is the pressure and vacuum range of the FasTest JXL?

A: Vacuum 10 mtorr (micron) up to 1,000 psi (69 bar) — a span covering deep-vacuum evacuation at one end and leak and pressure testing at the other.

Q: How is the FasTest JXL actuated?

A: By lever handle. One motion makes the connection, giving consistent actuation from operator to operator with no torque judgement involved.

Q: How are the seals replaced on the FasTest JXL?

A: Seal replacement is quick and easy, and is designed to minimise downtime and maintenance. Because a seal can be changed rather than swapping the whole tool out of service, fewer spare connectors need to be held in inventory. Main seal replacement and rebuild/repair instructions are available for download.

Q: What is the difference between the FasTest JXL and the ST?

A: Both are rated to 1,000 psi (69 bar) and both connect externally to tube. The JXL is lever-actuated and covers straight, swaged, and expanded tube features; the ST is sleeve-actuated and is built specifically for smooth straight tube. Choose the JXL when the tube population includes swaged or expanded ends, or when lever actuation suits the station better.

Q: What is the difference between the FasTest JXL and the XT?

A: The XT is purpose-built for expanded tubes and is rated to 750 psi (51.7 bar). The JXL covers straight, swaged, and expanded tube at up to 1,000 psi. Which suits depends on your tube geometry and test pressure — compare the datasheets or contact FasTest to confirm the right choice for your application.

Q: What is the FasTest JXL used for?

A: Leak testing, pressure testing, evacuation, and charging of tube assemblies — primarily in refrigeration and HVAC-R manufacturing, and in general industrial tube applications where connections need to be fast, repeatable, and gentle on the tube.