Best Threaded Reducing Couplings

Dixon Valve & Coupling DCP17S Stainless Steel 303 Air Chief Industrial Interchange Quick-Connect Hose Fitting, Plug, 1/2\ Coupling x 1/2\ NPT Male

Air Chief industrial interchange quick connect plug for connecting directly to a hose with a male NPT end to connect with a female NPT threaded connection.
Air Chief industrial interchange quick connect plug with a male NPT threaded end.
Valveless construction allows flow when disconnected.
Stainless steel 303 for better machining characteristics than stainless steel 316.
Interchanges with MIL-C-4109F/A-A-59439 specifications for quick-disconnect couplings for hoses and portable pneumatic tools, but not water or fluids, at maximum working pressures up to 232 psi (16 bar).

Air Chief industrial interchange quick connect plug for connecting directly to a hose with a male NPT end to connect with a female NPT threaded connection.
Air Chief industrial interchange quick connect plug with a male NPT threaded end.
Valveless construction allows flow when disconnected.
Stainless steel 303 for better machining characteristics than stainless steel 316.
Interchanges with MIL-C-4109F/A-A-59439 specifications for quick-disconnect couplings for hoses and portable pneumatic tools, but not water or fluids, at maximum working pressures up to 232 psi (16 bar).

Air Chief industrial interchange quick connect plug for connecting directly with a hose with a male NPT end to connect with a female NPT threaded connection.
Air Chief Industrial interchange quick connect coupler with a male NPT threaded end.
Valved construction automatically shuts off flow when coupler is disconnected..
Stainless steel 303 for better machining characteristics than stainless steel 316.
Interchanges with MIL-C-4109F/A-A-59439 specifications for quick-disconnect couplings for hoses and portable pneumatic tools, but not water or fluids, at maximum working pressures up to 232 psi (16 bar).

For use with Martin Quadra-Flex series flexible couplings (sold separately).
Cast iron for non-corrosive applications where strength and heat dissipation are factors and weight is not.
Transfers shock and misalignment to the center element of the coupling assembly for reduced wear on the shaft assembly.
Teeth help to distribute torsional load across the flange and sleeve, reducing wear and extending service life.

Reducer Adapter: Premium solid brass with thicker wall, more durable than iron and iron galvanized pipe fittings, 1/4" NPT male pipe x 3/8" NPT female....
Reducing Hex Nipple: Reducing hex nipple for connecting two threaded pipes with different diameters. Male National Pipe Taper (NPT) threads for....
Hex Bushing: Has a 3/8” male NPT threaded on one end and a 1/4” female NPT threaded on the other for connecting a female and a male pipe or....
These fittings are not allowed to be installed for potable water,NPT thread size does not actual diameter, it is only nominal pipe size..

Ultra-lightweight & Accessible - A practical addition to your set of firefighter tools, our mini spanner weighs only 2.5 ounces each. It fits in your bunker gear pocket, making it easy to access any time, anywhere..
Heavy-duty - Our mini spanner wrench is made of 6061 T6 aluminum, a metal suitable for tough tasks while firefighting. Small yet sturdy and tough, it excels at getting the job done.Tightens Couplings - Use this firefighter spanner wrench to tighten and secure loose couplings. Whether it’s for a standpipe connection or for an attack line, the spanners work on all caps and couplings on the fireground..
Tightens Couplings - Use this firefighter spanner wrench to tighten and secure loose couplings. Whether it’s for a standpipe connection or for an attack line, the spanners work on all caps and couplings on the fireground..
Undoes Couplings - No need to run back to the truck to grab spanners. Keep these mini spanner wrenches in your bunker gear pockets..
Great Value Pack of 2 - This firefighter spanner wrench comes in pairs..

Reducing straight union for connecting and disconnecting two inline pipes of different diameters more easily than couplings.
Accepts nylon and polyurethane tube fittings.
Made of acetal copolymer plastic for low moisture absorption and high tensile and flexural strength.
Meets NSF/ANSI standards 14, 51, and 61 for quality assurance.

For use with Martin Quadra-Flex series flexible couplings (sold separately).
Cast iron for non-corrosive applications where strength and heat dissipation are factors and weight is not.
Transfers shock and misalignment to the center element of the coupling assembly for reduced wear on the shaft assembly.
Teeth help to distribute torsional load across the flange and sleeve, reducing wear and extending service life.

Reducing straight union for connecting and disconnecting two inline pipes of different diameters more easily than couplings.
Accepts nylon and polyurethane tube fittings.
Made of acetal copolymer plastic for low moisture absorption and high tensile and flexural strength.
Meets NSF/ANSI standards 14, 51, and 61 for quality assurance.