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Enjoy fast and free shipping on all orders over $89! Contact us (855) 424-4376

Gas Connection

When it comes to gas piping systems, every joint, adapter and connector matters. The Gas Connection collection at Big Frog Supply brings you fittings and kits designed for secure, code-compliant installations—whether you’re working with CSST, flexible stainless connectors or transitioning between piping types.

In this collection you’ll find:

  • Stainless-steel appliance connectors and flexible gas lines for cooktops, boilers, grills and outdoor fire-pits—packaged and ready for hook-up.

  • Transition and termination fittings (e.g., CSST to black steel pipe, flare to NPT) plus installation kits that include seals, gaskets and required parts.

Why shop with Big Frog Supply? We live in the trenches of plumbing, irrigation and lighting. We know gas-system installs require precision, compliance and durability. You’re not just buying a part—you’re specifying a system that must perform safely for years.

  •

    Home Flex - 18-440-007 - 3/4" IPS Poly to 3/4" MIP Underground Meter Riser Bent

    Home Flex
    $ 104.98 - $ 104.98
    $ 104.98
    $ 104.98 - $ 104.98
    $ 104.98

    The HOME-FLEX underground in. Meter Riser allows to safely and easily transition from polyethylene pipe to a gas meter. MIP on the metal side for d...

    View full details
    $ 104.98 - $ 104.98
    $ 104.98
    $ 104.98 - $ 104.98
    $ 104.98
  • Crown - Flex Gas Connector 3/4" x 36" (Male x Female) - - Gas Connectors - Big Frog Supply

    Crown Industries - GC07536MF - Flex Gas Connector 3/4" x 36" (Male x Female)

    Crown Industries
    $ 16.75 - $ 16.75
    $ 16.75
    $ 16.75 - $ 16.75
    $ 16.75

    Stainless steel flexible gas line connector for use with water heaters, dryers, stoves, and heaters. Specifications: Length: 36" Inlets: 3/4" Stai...

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    $ 16.75 - $ 16.75
    $ 16.75
    $ 16.75 - $ 16.75
    $ 16.75
  • Crown - Flex Gas Connector 1/2" x 36" MIPxFIP (Male x Female) - - Gas Connectors - Big Frog Supply
    Sold out

    Crown Industries - GC05036MF - Flex Gas Connector 1/2" x 36" MIPxFIP (Male x Female)

    Crown Industries
    $ 16.50 - $ 16.50
    $ 16.50
    $ 16.50 - $ 16.50
    $ 16.50

    Stainless steel flexible gas line connector for use with water heaters, dryers, stoves, and heaters. Specifications: Length: 36" Inlets: 1/2" Stai...

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    $ 16.50 - $ 16.50
    $ 16.50
    $ 16.50 - $ 16.50
    $ 16.50
    Sold out
  • Easy - Flex Gas Connector Hi BTU 1" x 24" F.I.P. x M.I.P (Male x Female) - - Gas Connectors - Big Frog Supply

    Easy - GC10024MF - Flex Gas Connector Hi BTU 1" x 24" F.I.P. x M.I.P (Male x Female)

    Easy
    $ 26.00 - $ 26.00
    $ 26.00
    $ 26.00 - $ 26.00
    $ 26.00

    Stainless steel flexible gas line connector for use with applications that use a lot more BTUs. Specifications: Length: 24" Inlets: 1" Stainless s...

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    $ 26.00 - $ 26.00
    $ 26.00
    $ 26.00 - $ 26.00
    $ 26.00
  • Easy - Flex Gas Connector 3/4" x 18" MIPxFIP (Male x Female) - - Gas Connectors - Big Frog Supply

    Easy - GC07518MF - Flex Gas Connector 3/4" x 18" MIPxFIP (Male x Female)

    Easy
    $ 18.50 - $ 18.50
    $ 18.50
    $ 18.50 - $ 18.50
    $ 18.50

    Stainless steel flexible gas line connector for use with water heaters, dryers, stoves, and heaters. Specifications: Length: 18" Inlets: 3/4" Stai...

    View full details
    $ 18.50 - $ 18.50
    $ 18.50
    $ 18.50 - $ 18.50
    $ 18.50
  • Easy - Flex Gas Connector Hi BTU 1" x 18" F.I.P. x M.I.P (Male x Female) - - Gas Connectors - Big Frog Supply

    Easy - GC10018MF - Flex Gas Connector Hi BTU 1" x 18" F.I.P. x M.I.P (Male x Female)

    Easy
    $ 19.50 - $ 19.50
    $ 19.50
    $ 19.50 - $ 19.50
    $ 19.50

    Stainless steel flexible gas line connector for use with applications that use a lot more BTUs. Specifications: Length: 18" Outside Diameter 1" St...

    View full details
    $ 19.50 - $ 19.50
    $ 19.50
    $ 19.50 - $ 19.50
    $ 19.50
  • Crown - Flex Gas Connector Hi BTU 1" x 36" F.I.P. x M.I.P (Male x Female) - - Gas Connectors - Big Frog Supply

    Crown Industries - GC10036MF - Flex Gas Connector Hi BTU 3/4" x 36" F.I.P. x M.I.P (Male x Female)

    Crown Industries
    $ 34.00 - $ 34.00
    $ 34.00
    $ 34.00 - $ 34.00
    $ 34.00

    Stainless steel flexible gas line connector for use with applications that use a lot more BTUs. Specifications: Length: 36" Inlets: 3/4" Stainless...

    View full details
    $ 34.00 - $ 34.00
    $ 34.00
    $ 34.00 - $ 34.00
    $ 34.00
  • Easy - Flex Gas Connector 3/4" x 24" MIPxFIP (Male x Female) - - Gas Connectors - Big Frog Supply

    Easy - GC07524MF - Flex Gas Connector 3/4" x 24" MIPxFIP (Male x Female)

    Easy
    $ 16.50 - $ 16.50
    $ 16.50
    $ 16.50 - $ 16.50
    $ 16.50

    Stainless steel flexible gas line connector for use with water heaters, dryers, stoves, and heaters. Specifications: Length: 24" Inlets: 3/4" Stai...

    View full details
    $ 16.50 - $ 16.50
    $ 16.50
    $ 16.50 - $ 16.50
    $ 16.50
  • Crown - Flex Gas Connector 1/2" x 24" MIPxFIP (Male x Female) - - Gas Connectors - Big Frog Supply

    Crown Industries - GC05024MF - Flex Gas Connector 1/2" x 24" MIPxFIP (Male x Female)

    Crown Industries
    $ 12.47 - $ 12.47
    $ 12.47
    $ 12.47 - $ 12.47
    $ 12.47

    Stainless steel flexible gas line connector for use with water heaters, dryers, stoves, and heaters. Specifications: Length: 24" Inlets: 1/2" Stai...

    View full details
    $ 12.47 - $ 12.47
    $ 12.47
    $ 12.47 - $ 12.47
    $ 12.47
  • Crown - Flex Gas Connector 1/2" x 48" (Male x Female) - - Gas Connectors - Big Frog Supply

    Crown Industries - GC05048MF - Flex Gas Connector 1/2" x 48" (Male x Female)

    Crown Industries
    $ 19.00 - $ 19.00
    $ 19.00
    $ 19.00 - $ 19.00
    $ 19.00

    Stainless steel flexible gas line connector for use with water heaters, dryers, stoves, and heaters. Specifications: Length: 48" Inlets: 1/2" Stai...

    View full details
    $ 19.00 - $ 19.00
    $ 19.00
    $ 19.00 - $ 19.00
    $ 19.00
  • Crown Industries - CrownFLEX-CG8 Series Coated Stainless Steel Connector - - Mechanical - Big Frog Supply
    Sold out

    Crown Industries - CG836D - FLEX-CG8 Series Coated Stainless Steel Connector

    Crown Industries
    $ 14.99 - $ 14.99
    $ 14.99
    $ 14.99 - $ 14.99
    $ 14.99

    Industry Standard Yellow Polymer Coated - Provides protection against accidental contact with common household cleaning products, ammonia, chlorine...

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    $ 14.99 - $ 14.99
    $ 14.99
    $ 14.99 - $ 14.99
    $ 14.99
    Sold out
  • Crown - Flex Gas Connector 1/2" x 24" F.I.P. x M.I.P (Female x Female) - - Gas Connectors - Big Frog Supply

    Crown Industries - GC05024FF - Flex Gas Connector 1/2" x 24" F.I.P. x F.I.P (Female x Female)

    Crown Industries
    $ 19.99 - $ 19.99
    $ 19.99
    $ 19.99 - $ 19.99
    $ 19.99

    Stainless steel flexible gas line connector for use with water heaters, dryers, stoves, and heaters. Specifications: Length: 24" Inlets: 1/2" Stai...

    View full details
    $ 19.99 - $ 19.99
    $ 19.99
    $ 19.99 - $ 19.99
    $ 19.99

  • Home Flex - 18-445-010 - 1" IPS Poly to 1" MIP Underground Yellow Poly Gas Transition

    Home Flex
    $ 0.00 - $ 0.00
    $ 0.00
    $ 45.55
    $ 45.55 - $ 45.55
    $ 45.55

    The IPS size Yellow Poly Gas Pipe Transition Fitting allows you to transition from MDPE Yellow Poly Gas Pipe to metal pipe. One end of this Transit...

    View full details
    $ 0.00 - $ 0.00
    $ 0.00
    $ 45.55
    $ 45.55 - $ 45.55
    $ 45.55

  • Home Flex - 18-445-007 - 3/4" IPS Poly to 3/4" MIP Underground Yellow Poly Gas Transition

    Home Flex
    $ 0.00 - $ 0.00
    $ 0.00
    $ 37.95
    $ 37.95 - $ 37.95
    $ 37.95

    The IPS size Yellow Poly Gas Pipe Transition Fitting allows you to transition from MDPE Yellow Poly Gas Pipe to metal pipe. One end of this Transit...

    View full details
    $ 0.00 - $ 0.00
    $ 0.00
    $ 37.95
    $ 37.95 - $ 37.95
    $ 37.95
  • Sold out

    Home Flex - 18-445-005 - 1/2" IPS Poly to 1/2" MIP Underground Yellow Poly Gas Transition

    Home Flex
    $ 0.00 - $ 0.00
    $ 0.00
    $ 32.45
    $ 32.45 - $ 32.45
    $ 32.45

    The IPS size Yellow Poly Gas Pipe Transition Fitting allows you to transition from MDPE Yellow Poly Gas Pipe to metal pipe. One end of this Transit...

    View full details
    $ 0.00 - $ 0.00
    $ 0.00
    $ 32.45
    $ 32.45 - $ 32.45
    $ 32.45
    Sold out

  • Home Flex - 18-440-012 - 1-1/4" IPS Poly to 1-1/4" MIP Underground Meter Riser Bent

    Home Flex
    $ 0.00 - $ 0.00
    $ 0.00
    $ 104.72
    $ 104.72 - $ 104.72
    $ 104.72

    The HOME-FLEX underground in. Meter Riser allows to safely and easily transition from polyethylene pipe to a gas meter. MIP on the metal side for d...

    View full details
    $ 0.00 - $ 0.00
    $ 0.00
    $ 104.72
    $ 104.72 - $ 104.72
    $ 104.72

  • Home Flex - 18-440-010 - 1" IPS Poly to 1" MIP Underground Meter Riser Bent

    Home Flex
    $ 112.99 - $ 112.99
    $ 112.99
    $ 112.99 - $ 112.99
    $ 112.99

    The HOME-FLEX underground in. Meter Riser allows to safely and easily transition from polyethylene pipe to a gas meter. MIP on the metal side for d...

    View full details
    $ 112.99 - $ 112.99
    $ 112.99
    $ 112.99 - $ 112.99
    $ 112.99

Pro tip: Before you buy—identify your pipe type (CSST, black iron, flexible stainless), verify the connection size and end-type, ensure your fitting is listed for the correct fuel (NG or LP), and follow bonding/grounding requirements for CSST. Always terminate with the correct seal and torque specification per Manufacturer’s Instructions. Using the wrong adapter or skipping a seal can lead to leaks or code failure.

Browse the collection, choose the right fitting or kit for your system, and install with confidence.

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