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Gas Fittings

When dealing with gas piping systems, every connection must perform. Our Gas Fittings collection brings you the trusted adapters, unions, reducers, transitions and accessory components that tie your system together—whether you’re working with CSST, black steel, appliance hook-ups or retrofit installs.

What you’ll find in this collection:

  • CSST-to-threaded adapters, unions and couplings built for corrugated stainless steel tubing systems commonly used in modern gas supply. 

  • Appliance connection fittings and kits—brass male/female adapters, unions, reducing fittings—to hook up stoves, grills, boilers and other fuel-gas appliances cleanly and code-compliantly.

  • Transition fittings that adapt between piping types (CSST to NPT, CSST to steel pipe) and accessory parts to support installation (termination plates, unions, reducers).

  • Fittings rated for natural gas and propane applications, certified to industry standards and ready for residential or commercial systems.

Why Big Frog Supply? Because we understand that “just a fitting” can be the difference between safe system performance and trouble. We offer clear spec choices, trusted brands, and installation-smart advice so you build it right the first time.

  • Titan Press TPXL0100G 1 inch extended no-stop coupling for HNBR gas carbon steel systems
    Agotado

    Titan Press TPXL0100G 1 in. P x P Extended No-Stop Coupling, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 48.18
    $ 48.18 - $ 48.18
    $ 48.18

    Titan Press TPXL0100G 1 in. P x P Extended No-Stop Coupling Brand: Everflow Supplies | SKU: TPXL0100G Product Overview Extended carbon steel no...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 48.18
    $ 48.18 - $ 48.18
    $ 48.18
    Agotado
  • Titan Press TPXL0034G 3/4 inch extended no-stop coupling for HNBR gas carbon steel systems
    Agotado

    Titan Press TPXL0034G 3/4 in. P x P Extended No-Stop Coupling, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 41.10
    $ 41.10 - $ 41.10
    $ 41.10

    Titan Press TPXL0034G 3/4 in. P x P Extended No-Stop Coupling Brand: Everflow Supplies | SKU: TPXL0034G Product Overview Extended carbon steel ...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 41.10
    $ 41.10 - $ 41.10
    $ 41.10
    Agotado
  • Titan Press TPXL0012G 1/2 inch extended no-stop coupling for HNBR gas carbon steel systems
    Agotado

    Titan Press TPXL0012G 1/2 in. P x P Extended No-Stop Coupling, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 38.23
    $ 38.23 - $ 38.23
    $ 38.23

    Titan Press TPXL0012G 1/2 in. P x P Extended No-Stop Coupling Brand: Everflow Supplies | SKU: TPXL0012G Product Overview Extended carbon steel ...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 38.23
    $ 38.23 - $ 38.23
    $ 38.23
    Agotado
  • Titan Press TPUN0114G 1-1/4 inch union for HNBR gas carbon steel press systems
    Agotado

    Titan Press TPUN0114G 1-1/4 in. P x P Union, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 102.61
    $ 102.61 - $ 102.61
    $ 102.61

    Titan Press TPUN0114G 1-1/4 in. P x P Union Brand: Everflow Supplies | SKU: TPUN0114G Product Overview Carbon steel press union with HNBR seali...

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    $ 0.00 - $ 0.00
    $ 0.00
    $ 102.61
    $ 102.61 - $ 102.61
    $ 102.61
    Agotado
  • Titan Press TPUN0100G 1 inch union for HNBR gas carbon steel press systems
    Agotado

    Titan Press TPUN0100G 1 in. P x P Union, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 79.57
    $ 79.57 - $ 79.57
    $ 79.57

    Titan Press TPUN0100G 1 in. P x P Union Brand: Everflow Supplies | SKU: TPUN0100G Product Overview Carbon steel press union with HNBR sealing f...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 79.57
    $ 79.57 - $ 79.57
    $ 79.57
    Agotado
  • Titan Press TPUN0034G 3/4 inch union for HNBR gas carbon steel press systems
    Agotado

    Titan Press TPUN0034G 3/4 in. P x P Union, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 64.84
    $ 64.84 - $ 64.84
    $ 64.84

    Titan Press TPUN0034G 3/4 in. P x P Union Brand: Everflow Supplies | SKU: TPUN0034G Product Overview Carbon steel press union with HNBR sealing...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 64.84
    $ 64.84 - $ 64.84
    $ 64.84
    Agotado
  • Titan Press TPUN0012G 1/2 inch union for HNBR gas carbon steel press systems
    Agotado

    Titan Press TPUN0012G 1/2 in. P x P Union, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 65.94
    $ 65.94 - $ 65.94
    $ 65.94

    Titan Press TPUN0012G 1/2 in. P x P Union Brand: Everflow Supplies | SKU: TPUN0012G Product Overview Carbon steel press union with HNBR sealing...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 65.94
    $ 65.94 - $ 65.94
    $ 65.94
    Agotado
  • Titan Press TPTE0114G 1-1/4 inch tee for HNBR gas carbon steel press systems
    Agotado

    Titan Press TPTE0114G 1-1/4 in. P x P x P Tee, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 44.72
    $ 44.72 - $ 44.72
    $ 44.72

    Titan Press TPTE0114G 1-1/4 in. P x P x P Tee Brand: Everflow Supplies | SKU: TPTE0114G Product Overview Carbon steel press tee with HNBR seali...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 44.72
    $ 44.72 - $ 44.72
    $ 44.72
    Agotado
  • Titan Press TPTE0100G 1 inch tee for HNBR gas carbon steel press systems
    Agotado

    Titan Press TPTE0100G 1 in. P x P x P Tee, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 26.05
    $ 26.05 - $ 26.05
    $ 26.05

    Titan Press TPTE0100G 1 in. P x P x P Tee Brand: Everflow Supplies | SKU: TPTE0100G Product Overview Carbon steel press tee with HNBR sealing f...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 26.05
    $ 26.05 - $ 26.05
    $ 26.05
    Agotado
  • Titan Press TPTE0034G 3/4 inch tee for HNBR gas carbon steel press systems
    Agotado

    Titan Press TPTE0034G 3/4 in. P x P x P Tee, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 21.95
    $ 21.95 - $ 21.95
    $ 21.95

    Titan Press TPTE0034G 3/4 in. P x P x P Tee Brand: Everflow Supplies | SKU: TPTE0034G Product Overview Carbon steel press tee with HNBR sealing...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 21.95
    $ 21.95 - $ 21.95
    $ 21.95
    Agotado
  • Titan Press TPTE0012G 1/2 inch tee for HNBR gas carbon steel press systems
    Agotado

    Titan Press TPTE0012G 1/2 in. P x P x P Tee, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 19.90
    $ 19.90 - $ 19.90
    $ 19.90

    Titan Press TPTE0012G 1/2 in. P x P x P Tee Brand: Everflow Supplies | SKU: TPTE0012G Product Overview Carbon steel press tee with HNBR sealing...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 19.90
    $ 19.90 - $ 19.90
    $ 19.90
    Agotado
  • Titan Press TPRT3412G 3/4 inch x 3/4 inch x 1/2 inch reducing tee for HNBR gas carbon steel systems
    Agotado

    Titan Press TPRT3412G 3/4 in. x 3/4 in. x 1/2 in. Reducing Tee, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 23.86
    $ 23.86 - $ 23.86
    $ 23.86

    Titan Press TPRT3412G 3/4 in. x 3/4 in. x 1/2 in. Reducing Tee Brand: Everflow Supplies | SKU: TPRT3412G Product Overview Carbon steel reducing...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 23.86
    $ 23.86 - $ 23.86
    $ 23.86
    Agotado
  • Titan Press TPRT1434G 1-1/4 inch x 1-1/4 inch x 3/4 inch reducing tee for HNBR gas carbon steel systems
    Agotado

    Titan Press TPRT1434G 1-1/4 in. x 1-1/4 in. x 3/4 in. Reducing Tee, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 47.76
    $ 47.76 - $ 47.76
    $ 47.76

    Titan Press TPRT1434G 1-1/4 in. x 1-1/4 in. x 3/4 in. Reducing Tee Brand: Everflow Supplies | SKU: TPRT1434G Product Overview Carbon steel redu...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 47.76
    $ 47.76 - $ 47.76
    $ 47.76
    Agotado
  • Titan Press TPRT1412G 1-1/4 inch x 1-1/4 inch x 1/2 inch reducing tee for HNBR gas carbon steel systems
    Agotado

    Titan Press TPRT1412G 1-1/4 in. x 1-1/4 in. x 1/2 in. Reducing Tee, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 48.12
    $ 48.12 - $ 48.12
    $ 48.12

    Titan Press TPRT1412G 1-1/4 in. x 1-1/4 in. x 1/2 in. Reducing Tee Brand: Everflow Supplies | SKU: TPRT1412G Product Overview Carbon steel redu...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 48.12
    $ 48.12 - $ 48.12
    $ 48.12
    Agotado
  • Titan Press TPRT1410G 1-1/4 inch x 1-1/4 inch x 1 inch reducing tee for HNBR gas carbon steel systems
    Agotado

    Titan Press TPRT1410G 1-1/4 in. x 1-1/4 in. x 1 in. Reducing Tee, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 46.84
    $ 46.84 - $ 46.84
    $ 46.84

    Titan Press TPRT1410G 1-1/4 in. x 1-1/4 in. x 1 in. Reducing Tee Brand: Everflow Supplies | SKU: TPRT1410G Product Overview Carbon steel reduci...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 46.84
    $ 46.84 - $ 46.84
    $ 46.84
    Agotado
  • Titan Press TPRT1134G 1 inch x 1 inch x 3/4 inch reducing tee for HNBR gas carbon steel systems
    Agotado

    Titan Press TPRT1134G 1 in. x 1 in. x 3/4 in. Reducing Tee, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 29.14
    $ 29.14 - $ 29.14
    $ 29.14

    Titan Press TPRT1134G 1 in. x 1 in. x 3/4 in. Reducing Tee Brand: Everflow Supplies | SKU: TPRT1134G Product Overview Carbon steel reducing pre...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 29.14
    $ 29.14 - $ 29.14
    $ 29.14
    Agotado
  • Titan Press TPRT1112G 1 inch x 1 inch x 1/2 inch reducing tee for HNBR gas carbon steel systems
    Agotado

    Titan Press TPRT1112G 1 in. x 1 in. x 1/2 in. Reducing Tee, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 29.79
    $ 29.79 - $ 29.79
    $ 29.79

    Titan Press TPRT1112G 1 in. x 1 in. x 1/2 in. Reducing Tee Brand: Everflow Supplies | SKU: TPRT1112G Product Overview Carbon steel reducing pre...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 29.79
    $ 29.79 - $ 29.79
    $ 29.79
    Agotado
  • Titan Press TPRC3412G 3/4 inch x 1/2 inch reducing coupling for HNBR gas carbon steel systems
    Agotado

    Titan Press TPRC3412G 3/4 in. x 1/2 in. P x P Reducing Coupling, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 14.16
    $ 14.16 - $ 14.16
    $ 14.16

    Titan Press TPRC3412G 3/4 in. x 1/2 in. Reducing Coupling Brand: Everflow Supplies | SKU: TPRC3412G Product Overview Carbon steel reducing pres...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 14.16
    $ 14.16 - $ 14.16
    $ 14.16
    Agotado
  • Titan Press TPRC1134G 1-1/4 inch x 3/4 inch reducing coupling for HNBR gas carbon steel systems
    Agotado

    Titan Press TPRC1134G 1-1/4 in. x 3/4 in. P x P Reducing Coupling, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 26.45
    $ 26.45 - $ 26.45
    $ 26.45

    Titan Press TPRC1134G 1-1/4 in. x 3/4 in. Reducing Coupling Brand: Everflow Supplies | SKU: TPRC1134G Product Overview Carbon steel reducing pr...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 26.45
    $ 26.45 - $ 26.45
    $ 26.45
    Agotado
  • Titan Press TPRC1034G 1 inch x 3/4 inch reducing coupling for HNBR gas carbon steel systems
    Agotado

    Titan Press TPRC1034G 1 in. x 3/4 in. P x P Reducing Coupling, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 16.99
    $ 16.99 - $ 16.99
    $ 16.99

    Titan Press TPRC1034G 1 in. x 3/4 in. Reducing Coupling Brand: Everflow Supplies | SKU: TPRC1034G Product Overview Carbon steel reducing press ...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 16.99
    $ 16.99 - $ 16.99
    $ 16.99
    Agotado
  • Titan Press TPRC1012G 1 inch x 1/2 inch reducing coupling for HNBR gas carbon steel systems
    Agotado

    Titan Press TPRC1012G 1 in. x 1/2 in. P x P Reducing Coupling, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 16.96
    $ 16.96 - $ 16.96
    $ 16.96

    Titan Press TPRC1012G 1 in. x 1/2 in. Reducing Coupling Brand: Everflow Supplies | SKU: TPRC1012G Product Overview Carbon steel reducing press ...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 16.96
    $ 16.96 - $ 16.96
    $ 16.96
    Agotado
  • Titan Press TPMA0114G 1-1/4 inch press x MPT male adapter for HNBR gas carbon steel systems
    Agotado

    Titan Press TPMA0114G 1-1/4 in. P x MPT Male Adapter, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 25.65
    $ 25.65 - $ 25.65
    $ 25.65

    Titan Press TPMA0114G 1-1/4 in. P x MPT Male Adapter Brand: Everflow Supplies | SKU: TPMA0114G Product Overview Carbon steel male adapter with ...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 25.65
    $ 25.65 - $ 25.65
    $ 25.65
    Agotado
  • Titan Press TPMA0100G 1 inch press x MPT male adapter for HNBR gas carbon steel systems
    Agotado

    Titan Press TPMA0100G 1 in. P x MPT Male Adapter, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 21.23
    $ 21.23 - $ 21.23
    $ 21.23

    Titan Press TPMA0100G 1 in. P x MPT Male Adapter Brand: Everflow Supplies | SKU: TPMA0100G Product Overview Carbon steel male adapter with HNBR...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 21.23
    $ 21.23 - $ 21.23
    $ 21.23
    Agotado
  • Titan Press TPMA0012G 1/2 inch press x MPT male adapter for HNBR gas carbon steel systems
    Agotado

    Titan Press TPMA0012G 1/2 in. P x MPT Male Adapter, HNBR Gas, Carbon Steel

    Everflow Supplies
    $ 0.00 - $ 0.00
    $ 0.00
    $ 15.59
    $ 15.59 - $ 15.59
    $ 15.59

    Titan Press TPMA0012G 1/2 in. P x MPT Male Adapter Brand: Everflow Supplies | SKU: TPMA0012G Product Overview Carbon steel male adapter with HN...

    Ver todos los detalles
    $ 0.00 - $ 0.00
    $ 0.00
    $ 15.59
    $ 15.59 - $ 15.59
    $ 15.59
    Agotado

Pro tip: Before you purchase, identify the type of gas piping you’re connecting to (CSST, black iron, soft stainless), confirm fuel type (natural or LP), ensure certification for the fitting, and check for bonding/grounding requirements on CSST runs. Using matched system components helps reduce leak-risk and keeps installs code-compliant.

Browse the collection, select the correct fitting for your system, and install with confidence.

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