The Under-Pressure Connector for Refrigerant Process Tips

The FasTest RQD is an HVAC-R processing connector that makes instant external connections to ISO 7241-1 Series B Quick Disconnect (“QD”) Tips/Plugs, .e.g. Hansen® , PCU® (other brands too) when   charging, and leak testing up to 750 psi (51.7 bar). Instead of struggling to connect a pressurized QD Coupler to the Tip, with the RQD the operator simply slides the connector onto the Tip, then locks in place with the sleeve, then actuates the lever handle to open the connection. The whole sequence takes seconds and requires no tools.

What sets the FasTest RQD apart is that it connects and vents even under pressure. The sleeve locks the connection onto the process tip before pressure is applied. That eliminates the force required to connect against a pressurized line — a common struggle when system pressure pushes back against the connector. The lever handle then controls the refrigerant charging and venting.  Internal refrigerant is safely directed away from the operator rather than toward them when disconnecting.

That “under-pressure” capability is what makes the FasTest RQD ideally/uniquely suited to real refrigerant processing work, where lines are rarely conveniently empty. Its range runs from deep vacuum — 10 mtorr (micron) — up to 750 psi (51.7 bar), covering evacuation, high-pressure refrigerant processing, leak testing, and pressure testing applications with a single tool.

For “Zero Emission Processing” applications, a “Recovery Port” option is available, allowing vented refrigerant to be routed to a recovery system rather than escaping at the connection point. Because the RQD is offered in several configurations, FasTest maintains a dedicated RQD Options page to help you match the right version to your process tips and application.

The Problem the FasTest RQD Solves

Connecting to a refrigerant process tip on a pressurized system creates problems that “ISO B” Couplers handle poorly:

• The line is usually under pressure: Refrigerant systems are rarely empty when they need to be processed or tested. A QD Coupler that can only be easily attached to a depressurized line forces extra steps, or requires a special “Vice Grip Tool” to make a connection — or simply can’t be used at that point in the process.
• Pressure fights the connection: When a line is pressurized, system pressure pushes back against the connector as it is installed, making the connection physically hard to complete and inconsistent from operator to operator.
• Refrigerant exposure at the connection point: Venting a pressurized refrigerant line to atmosphere releases refrigerant into the environment, unhealthy for both the operator and the Ozone layer — an avoidable exposure and a real safety concern in service and production environments.
• Vented refrigerant is lost: Without a recovery path, refrigerant released during connection or venting escapes at the connection point instead of being captured and reused.

The FasTest RQD addresses all of this: the sleeve locks the connection before pressure is applied to minimize connect force, the lever handle connects and vents under pressure while directing refrigerant away from the operator, and an optional Recovery Port routes vented refrigerant to a recovery system.

Key Features 

Instant Connections to Refrigerant Lines

The FasTest RQD connects to a refrigerant process tip in seconds — slide on, lock the sleeve, actuate the lever. No potential for injury, no special Vice-Grip tools, and no thread tape. For service technicians and production operators making the same connection repeatedly, this removes the connection step as a time sink and delivers a consistent result on every connection.

Built to Process High-Pressure Refrigerants

The FasTest RQD is designed specifically to make processing high-pressure refrigerants straightforward. Its sealing and actuation are engineered around the pressures these systems run at, so the connector handles high-pressure refrigerant work as a matter of course rather than as an edge case.

Deep Vacuum to 750 psi in One Tool

The FasTest RQD covers a range from 10 mtorr (micron) of vacuum up to 750 psi (51.7 bar). That single span handles system evacuation at one end and high-pressure refrigerant processing, leak testing, and pressure testing at the other — so one connector serves the full processing sequence instead of swapping tools between steps.

Sleeve Lock Minimizes Force to Connect

The sleeve locks the FasTest RQD onto the process tip before pressure is applied to the connection. Because the mechanical lock is established first, the operator isn’t fighting system pressure while trying to seat the connector — which makes the connection easier to complete, less fatiguing across a shift, and more consistent from one operator to the next.

Connects and Vents Under Pressure — Away From the Operator

The lever handle lets the FasTest RQD connect and vent even while the line is under pressure, and it directs refrigerant away from the operator as it does so. This is the RQD’s defining safety advantage: the work can be done on a live system without putting the person making the connection in the path of the refrigerant.

Recovery Port Option

An optional Recovery Port allows refrigerant vented during the connection process to be routed into a recovery system rather than escaping at the tip. For operations that capture refrigerant as a matter of policy or practice, this option keeps the RQD’s fast under-pressure connection without giving up the recovery path.

Technical Specifications

Where the FasTest RQD Is Used

Refrigerant System Evacuation & Charging

The FasTest RQD connects to Hansen® and PCU® process tips to evacuate and charge refrigeration and air-conditioning systems. Because its range starts at 10 mtorr of vacuum and runs to 750 psi, the same connector handles the evacuation and the charging portions of the process without a tool change.

High-Pressure Refrigerant Processing

For systems running high-pressure refrigerants, the FasTest RQD is designed to make processing straightforward at pressure. The sleeve-lock-then-lever sequence lets operators connect to a pressurized line quickly and consistently rather than working around the pressure.

Leak & Pressure Testing of Refrigeration Systems

The FasTest RQD is used for leak testing and high-pressure testing of refrigeration and air-conditioning assemblies. Connecting at the process tip gives a fast, repeatable test connection at the point the system already provides — no additional access fitting required.

Service & Recovery Operations

In service work, systems are live and refrigerant handling matters. The FasTest RQD’s ability to connect and vent under pressure while directing refrigerant away from the operator — combined with the optional Recovery Port — makes it well suited to field and shop service operations where refrigerant is captured rather than released.

FasTest RQD vs. a ISO B Coupler

Frequently Asked Questions

Q: What is the FasTest RQD?

A: The FasTest RQD is an HVAC-R processing connector that makes instant external connections to refrigerant process tips — Hansen® and PCU® tips — from 10 mTorr of vacuum up to 750 psi (51.7 bar). It connects and vents even under pressure, using a sleeve lock and lever handle.

Q: What does the FasTest RQD connect to?

A: ISO 7241-1 Series B Quick Disconnect (“QD”) Tips/Plugs, .e.g. Hansen® , PCU® (other brands too) — the refrigerant process tips typically  found on refrigeration and air-conditioning systems. The connector seals externally onto the tip rather than threading onto it.

Q: Can the FasTest RQD connect to a line that is under pressure?

A: Yes — this is one of its defining features. The sleeve locks the connection onto the process tip before pressure is applied, and the lever handle then connects and vents even while the line is under pressure.

Q: How does the FasTest RQD protect the operator?

A: The RQD directs refrigerant away from the operator when disconnecting/venting, so the person making the connection is not in the refrigerant’s path when working on a live, pressurized system.

Q: Why does the sleeve lock reduce the force needed to connect?

A: The sleeve establishes the mechanical connection to the process tip before pressure is applied. Because the lock comes first, the operator is not pushing the connector against system pressure — which makes the connection easier, more consistent, safer, and less fatiguing over a shift.

Q: What is the pressure range of the FasTest RQD?

A: Vacuum 10 mTorr (micron) up to 750 psi (51.7 bar) — a range that covers system evacuation at one end and high-pressure refrigerant processing, leak testing, and pressure testing at the other.

Q: What is the Recovery Port option and what does it accomplish?

A: The Recovery Port is an available option that allows the RQD to be connected to a recovery system.  It recovers refrigerant trapped in the connector before disconnecting, rather than letting it escape to the atmosphere thus enabling a Zero Emission Process.

Q: What is the FasTest RQD used for?

A: Primarily used for the charging process but can be used to simplify any connection to a QD Tip/Plug where either side of the connection is under pressure, e.g. leak testing, high-pressure testing, and related refrigerant processing.

Q: Which RQD option should I choose?

A: The RQD is offered in several configurations. FasTest maintains a dedicated RQD Options page that walks through the differences so you can match the right version to your process tips and application; FasTest technical support can also make a recommendation.

Q: What maintenance parts are available for the FasTest RQD?

A: Main seal replacement, poppet seal replacement, and rebuild/repair instructions are available for download, along with the datasheet and operating instructions. Maintenance parts for the RQD series can be ordered through the FasTest maintenance parts catalog.