Gas Fittings

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How to determine Pipe Thread Size
Pipe thread sizes do not refer to any physical dimensions. The outside diameter of each pipe fitting
must be measured and compared to the table for size identification.
For example: a 1/4" NPT has an outside dimension of 0.54".
This is especially important when looking for Regulator fittings.

NPT SIZE
THREAD DIAMETER

THREAD DIAMETER (O.D. of MPT or I.D.
of FPT)

1/8" NPT

0.405

1/4" NPT

0.54

3/8" NPT

0.675

1/2" NPT

0.84

3/4" NPT

1.05

1" NPT 1

1.315

1-1/4" NPT

1.66

1-1/2" NPT

1.9

2" NPT

2.375

2-1/2" NPT

2.875

3" NPT

3.5

4" NPT

4.5






Model Product Image Item Name Price
Brass Cap - 03G07237ih Brass Cap - 1/4" Female Flare Thread

Brass Cap - 1/4" Female Flare Thread

1/4" BRASS MANIFOLD CAP Terminate a port or male Flare threaded fitting/hose. Comes with sealing gasket.
$0.79

Add:

CO2 WasherComp - 02C03188ih CO2 Regulator Washer - Composite

CO2 Regulator Washer - Composite

CO2 WASHER - COMPOSITE Used to seal between Gas tank and Regulator. It is always good to have some extra ones when you need them - You beer...
$0.25

Add:

CO2 WasherNylon - 02H06294ih CO2 Regulator Washer - Nylon

CO2 Regulator Washer - Nylon

CO2 WASHER - NYLON Used to seal between Gas tank and Regulator. It is always good to have some extra ones when you need them - You beer...
$0.25

Add:

AirDistFttg-HexNpple -03G07241ih Hex Nipple - Right Hand Thread

Hex Nipple - Right Hand Thread

HEX NIPPLE - RHT This fitting allows you to connect two right hand threaded pieces, such as regulator bodies. 1/4" MPT x 1/4" MPT - right hand thread...
$3.46

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AirDistFttg-HexNpple-03C07245ih Hex Nipple - Left Hand Thread

Hex Nipple - Left Hand Thread

HEX NIPPLE - LHT This fitting allows you to connect two left hand threaded pieces, such as regulator bodies. 1/4" Male Pipe Thread x 1/4" Male...
$3.36

Add:

AirDistFttg-HoseStem-05B01106ih Hose Stem

Hose Stem

HOSE STEM 5/16" Barb x 1/4" Male Pipe Thread (MPT)
$1.49

Add:

AirDistFttg-Adapter-05B01183ih MFL Adapter to MPT - Right Hand Thread

MFL Adapter to MPT - Right Hand Thread

MFL ADAPTER TO PIPE THREAD - RIGHT HAND THREAD Allows you to attach a 1/4" Female Flare Nut to a Female Pipe thread 1/4" MFL x 1/4" MPT This fitting...
$1.25

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AirDistFttg-Adapter-03C03122ih MFL Adapter to MPT - Left Hand Thread

MFL Adapter to MPT - Left Hand Thread

MFL ADAPTER TO PIPE THREAD - LEFT HAND THREAD Allows you to attach a 1/4" Female Flare Nut to a Female Pipe left hand thread 1/4" MFL x 1/4" MPT This...
$2.36

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AirDistFttg-Adapter-05B01345ih MFL Adapter to MPT w/ Check Valve

MFL Adapter to MPT w/ Check Valve

MFL ADAPTER TO PIPE THREAD w/ CHECK VALVE Allows you to attach a 1/4" Female Flare Nut to a Female Pipe thread. Has internal Check valve to prevent...
$2.59

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AirDistFttg-PipePlug-05B01135 Pipe Plug - 1/4" MPT

Pipe Plug - 1/4" MPT

PIPE PLUG 1/4" Male Pipe Thread. Allows you to seal off / terminate an opening.
$0.86

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AirDistFttg-HexPlug-05B01154IH Hex Plug - 1/4" Right Hand Thread

Hex Plug - 1/4" Right Hand Thread

HEX PLUG - 1/4" RHT Hex Plug. 1/4" MPT Right Hand Threaded. Allows you to close / terminate a male pipe threaded opening.
$0.99

Add:

AirDistFttg - HexPlug-03S07101ih Hex Plug - Left Hand Thread

Hex Plug - Left Hand Thread

HEX PLUG - LHT Hex Plug. 1/4" MPT Left Hand Threaded. Allows you to close / terminate a male pipe threaded opening.
$1.74

Add:

AirDistFttg - Reducer-05B01166 Pipe Reducer

Pipe Reducer

PIPE REDUCER Allows you to reduce from 3/8" MPT to 1/4" FPT 3/8" FPT x 1/4" MPT Brass
$1.99

Add:

AirDistFttg - WYE - 03A03121ih Y Splitter (WYE)

Y Splitter (WYE)

Y SPLITTER - (WYE) Allows you to branch off from a 1/4" FPT to two 1/4" MPT 1/4" MPT x 1/4" FPT x 1/4" FPT  Brass
$8.08

Add:

Check&ReliefValve - 03G07136 Check & Relief Valve

Check & Relief Valve

CHECK & RELIEF VALVE This piece allows you to have both a Check valve and pressure relief valve in one unit. Perfect for Gas Regulators where...
$35.85

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Pressure Relief Valve Pressure Relief Valves

Pressure Relief Valves

Pressure Relief Valves For gas regulators, pressure lines/fittings and other uses. Don't throw away an otherwise good part just because of a weak...
$8.15

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