The Non-Sparking Connector for Natural Gas and Burner Testing

The FasTest GasMate G60V is an external, sleeve-actuated connector that seals onto male NPT threads for natural gas and burner testing at up to 30 psi (2.1 bar). It is built for gas-fired appliance and furnace production testing, where connections have to be made and broken hundreds of times a shift on lines handling combustible gas.

The brass collets are the most important thing about this connector, and the reason is safety rather than performance. Testing gas-fired appliances means working where combustible gas may be present, and brass is non-sparking — it does not throw sparks on impact the way ferrous metals can. That makes the material choice a threshold requirement for the application, not a refinement: it is part of what determines whether a connector belongs on a natural gas test line at all.

The FasTest GasMate G60V seals externally on the outside of the NPT male thread rather than threading into it, so no thread tape or sealant is applied and nothing is introduced into the gas path. A floating piston ensures the seal reaches its proper face and ID sealing position on every connection — which matters on a tapered NPT thread, where how far a conventional fitting threads in varies from part to part and operator to operator.

The connector is available with the SureConnect™ sleeve, giving the operator visual confirmation that the connection is secure before the test begins. Within the GasMate line, the G60V handles external NPT connections at 30 psi; its counterpart, the GasMate® GZNV, makes internal connections for natural gas and burner testing at 5 psi (0.345 bar).

The Problem the FasTest GasMate G60V Solves

Leak testing gas-fired appliances places demands on the connection that ordinary test fittings do not address:

• The atmosphere may be combustible: Natural gas testing means connections are made and broken where gas can be present. Tooling that can generate a spark is a hazard in that environment, which rules out a great many otherwise capable connectors.

• Thread sealant contaminates the gas path: A threaded NPT test fitting seals on tape or pipe dope. Both can shred or migrate into the appliance being tested — an unwanted addition to a gas train, and a consumable applied fresh at every connection.

• Seal position on a tapered thread varies: NPT is a tapered thread, so how far a fitting seats depends on torque and technique. Inconsistent seating means inconsistent sealing, and on a gas connection that shows up as a leak or a false test result.

• Operators cannot see whether the seal is made: On a low-pressure gas connection there is little tactile feedback to confirm a good connection, so a marginal seal can go unnoticed until the test fails — or worse, passes when it should not have.

The FasTest GasMate G60V answers each of these: brass collets for non-sparking operation, external sealing that introduces no tape or sealant, a floating piston that puts the seal in the proper face/ID position every time, and the optional SureConnect™ sleeve for visual confirmation that the connection is secure.

Key Features 

Ideally Suited for Gas-Fired Appliance and Furnace Testing

The FasTest GasMate G60V is purpose-built for the gas appliance industry rather than adapted to it. Gas-fired appliance and furnace production lines test at low pressure, in high volume, on NPT connections, in an environment where combustible gas is part of the process — and every design choice in this connector, from the collet material to the sleeve actuation, follows from that combination.

Brass Collets for Non-Sparking Operation

The collets on the FasTest GasMate G60V are brass because brass is non-sparking. In a test environment where natural gas may be present, a connector that can generate a spark on impact introduces an ignition risk that no amount of speed or sealing performance offsets. Choosing brass removes that risk at the point where the tool contacts the part, which is exactly where repeated connection and disconnection makes contact most likely.

External Sealing of NPT Male Threads to 30 psi

Rather than threading into the port, the FasTest GasMate G60V seals externally against the outside of the male NPT thread at pressures up to 30 psi (2.1 bar). Because the seal is made on the connector’s own seal element, no thread tape or pipe dope is applied — nothing enters the gas path, nothing needs reapplying between parts, and the thread on the appliance is not worn down by repeated wrenching.

Floating Piston Ensures Proper Face / ID Sealing Position

NPT is a tapered thread, which means a conventional fitting seats at a slightly different depth every time depending on torque and technique. The FasTest GasMate G60V’s floating piston compensates: it allows the seal to find its proper face and ID sealing position on each connection, so the sealing geometry is consistent from part to part regardless of small variations in the thread or the operator.

SureConnect™ Sleeve — Visual Confirmation of a Secure Connection

The FasTest GasMate G60V is available with the SureConnect™ sleeve, which gives the operator a visual indication that the connection is fully and securely made. On a low-pressure gas connection, where there is little tactile feedback to go on, being able to see that the connection is right before starting the test removes guesswork and reduces the chance of a marginal seal producing a misleading result.

Technical Specifications

Where the FasTest GasMate G60V Is Used

Gas-Fired Appliance Production Testing

Gas-fired appliances are leak tested at the end of assembly, in volume, on NPT gas connections. The FasTest GasMate G60V makes that connection in seconds without tape or sealant, and its brass collets keep the tooling non-sparking in an environment where gas is part of the test.

Furnace and Burner Assembly Testing

Furnace and burner assemblies present male NPT connections that need leak testing before the unit ships. The G60V seals externally on those threads at up to 30 psi, with the floating piston keeping the sealing position consistent across a production run.

NPT Gas Connection Leak Testing

Anywhere a male NPT gas connection has to be leak tested repeatedly, the FasTest GasMate G60V replaces the threaded test fitting — removing the sealant, the wrenching, and the thread wear that comes with hundreds of test cycles on the same tooling.

Test Environments Requiring Non-Sparking Tooling

Where the test environment calls for non-sparking tooling, the G60V’s brass collets make it appropriate for the application in a way that a comparable steel-collet connector would not be. Confirm the specific requirements of your facility and application with FasTest when specifying.

FasTest GasMate G60V vs. a Threaded NPT Test Fitting

Frequently Asked Questions

Q: What is the FasTest GasMate G60V?

A: The FasTest GasMate G60V is an external, sleeve-actuated connector that seals onto male NPT threads for natural gas and burner testing at up to 30 psi (2.1 bar). It is designed for gas-fired appliance and furnace production testing, and uses brass collets for non-sparking operation.

Q: Why does the GasMate G60V use brass collets?

A: Because brass is non-sparking. Gas appliance testing takes place where combustible gas may be present, and a connector that can generate a spark on impact introduces an ignition risk. Brass collets remove that risk at the point where the tool repeatedly contacts the part.

Q: What does the GasMate G60V connect to?

A: External male NPT threads. It seals on the outside of the thread rather than threading into the port.

Q: What is the maximum pressure rating of the GasMate G60V?

A: Vacuum to 30 psi (2.1 bar) — the range used for natural gas appliance, furnace, and burner leak testing.

Q: Does the GasMate G60V need thread tape or sealant?

A: No. It seals externally on its own seal element rather than relying on tape or pipe dope, so nothing is introduced into the gas path and there is no consumable to reapply between parts.

Q: What does the floating piston do?

A: NPT is a tapered thread, so a conventional fitting seats at a slightly different depth each time depending on torque and technique. The floating piston lets the seal find its proper face and ID sealing position on every connection, keeping the sealing geometry consistent across a production run.

Q: What is the SureConnect™ sleeve?

A: An available option that gives the operator visual confirmation that the connection is fully and securely made — useful on low-pressure gas connections, where there is little tactile feedback to confirm a good seal before the test starts.

Q: What is the difference between the GasMate G60V and the GasMate GZNV?

A: The G60V makes external connections — sealing on the outside of a male NPT thread — at up to 30 psi (2.1 bar). The GZNV makes internal connections for natural gas and burner testing at up to 5 psi (0.345 bar). Choose the G60V for external NPT threads and the GZNV for internal connections.

Q: How is the GasMate G60V actuated?

A: By sleeve. The operator engages the sleeve to make the connection, which takes seconds and delivers consistent actuation from operator to operator.

Q: What industries use the GasMate G60V?

A: Appliance manufacturing — specifically gas-fired appliance, furnace, and burner production, where NPT gas connections are leak tested in volume and non-sparking tooling is required.