Best Adapter Compression Union Straights in 2026

Coupling for connecting two pipes with the same diameter in a straight run

Female National Pipe Taper (NPT) threads for connecting to male threaded pipes

Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability

Type:Push In Male Connector. Size:1/4” od tubing 1/4”NPT. Weight:18.5g od tubing air fitting quick release air line fittings

Fluid Admitted:Air, Vacuum, air fittings (No Freezing)

Working Pressure:0-1.0mpa | 0-150psi. Proof Pressure:1.5.Mpa | 150 psi push fittings tube coupler airline quick connect

★ 【Material】: Heavy Duty Brass,strong and durable. Size: 1/4" Tube OD x 1/4" inch NPT Male Adapter.

★ 【Firm And Durable】: Litorange Brass for corrosion resistance, high temperature ductility and low magnetic permeability.

★ 【Function】: Fitting connects to tubing on one end and has an NPT male connector on the other. Use with copper, brass, aluminum, or plastic tubing.

Made of high-quality plastics and brass for durable use

Type: Quick Connect Fitting Connector

Advantages: Easy installation and disassembly, good sealing performance

1/4"x1/4" Brass Pipe Hose Fitting with NPT Female Thread Straight Hex Nipple Fast Coupler

Good raw material brass, high corrosion resistance, low magnetic characteristics and high temperature ductility

Made with precision process, no leaking and durable, easy to connect and disconnect

Three piece construction - nut, sleeve and body with attached insert

Use with copper, brass, aluminum, or plastic tubing

Standard fittings use short nuts

【SIZE & NPT THREADS TYPE】: Size: 3/8" NPT x 3/8" NPT Male Threads, OD: 0.65 Inch, ID: 0.44 Inch, Length: 1.18 inch; Note: This hex nipple are NPT threads type, not compression threads, Compression and NPT are two different thread types, Please check if the size fits your needs before your purchase.

【FIRM】: Brass for corrosion resistance, hightemperature ductility and low magneticpermeability, solid brass can withstand up to 100 °C(212 °F); Note: Brass fittings are notallowed by federal law to be installed for potablewater use in the U.S.A. and its territories

【DURABLE】: SUNGATOR selects high quality solidbrass with a longer service life, firm and durable, thishex nipple is not a cast product, meets specifications ASTM B584 and ASME/ANSI B16 for quality assurance

1/4 Union Straight Push to connect fittings Fluid Admitted: Air, Water, Steam ;Pressure: 2MPa | 290psi/ Applicable: Pipe PU/NYLON/Soft PE; Working Temperature:-20°C—120°C | -4°F—248°F

1/4 Push connectors Nickel Plated Brass - corrosion resistance, ductility at high temperatures, and low magnetic permeability; Seal: O-ring FKM(Viton)

These 1/4 quick connect fittings work great ,available in various styles and models ,good to suit your pneumatic piping needs perfectly, easy to connect and disconnect, a quick fix to your leaking problems.

Designed To Withstand A Wide Range Of Temperatures, From -20°c To 120°c (-4°f To 248°f), Ensuring Durability And Reliability In Any Environment.Our Quick Connect Fittings Are Compatible With Various Types Of Tubing, Including Pu, Nylon,

Easy Installation: Featuring A 1/4 Quick Connect Fittings Size, These Fittings Ensure A Quick And Effortless Installation Process. No More Wasting Time On Complex Procedures; Simply Connect And Disconnect With Ease. Air Hose Quick Fittings:

Push Lock Fittings: For Added Security, Our Quick Connect Fittings Feature Push Lock Mechanisms, Ensuring A Tight And Reliable Seal. Quick Connect Tube Fittings: Designed Specifically For Tube Applications, Our Quick Connect Fittings Allow For Swift And Effortless Connections.

Three piece construction - nut, sleeve and body with attached insert Use with copper, brass, aluminum, or plastic tubing

Manufactured for low and medium pressure tubing connection work where excessive vibration or tube movement is not involved.

Use with copper,aluminum and thermoplastic tub-ing.Not recommended for steel tubing.

Union for connecting and disconnecting two tubes more easily than with a coupling

Compression tube connections on both ends

Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability

SIZE - 1/2" Tube OD x 1/2" Tube OD, Compression Tube Fitting mainly consists of a fitting body with a 24 degree tapered hole, a ferrule with a sharp inner edge, and a nut for compression.

MATERIAL - Made of high-quality brass, with strong wear and corrosion resistance, high compressive strength, durability, low magnetic permeability and high temperature ductility.

Use - Suitable for oil, gas, water and other non-corrosive or corrosive pipeline systems, temperature and pressure resistance, good sealing and repeatability, no need for welding and flaring tools, easy disassembly, installation and maintenance, etc.

SIZE - 1/4" Tube OD x 1/4" Tube OD x 1/4" Tube OD, Compression Tube Fitting mainly consists of a fitting body with a 24 degree tapered hole, a ferrule with a sharp inner edge, and a nut for compression.

MATERIAL - Made of high-quality brass, with strong wear and corrosion resistance, high compressive strength, durability, low magnetic permeability and high temperature ductility.

Use - Suitable for oil, gas, water and other non-corrosive or corrosive pipeline systems, temperature and pressure resistance, good sealing and repeatability, no need for welding and flaring tools, easy disassembly, installation and maintenance, etc.

5/16" Brass compression unions - Pack of 3

These compression unions are used on fuel, transmission, oil, return power steering line and coolant lines

Works with steel, copper, aluminum & nylon tubing material or combinations of these together

Type: Standard 3/8" Tube OD (Compression) male to 3/8" Tube OD (Compression) male.Compression nuts and ferrules included.5pcs

Reducing adapter for different size tube pipes or fittings,Both fitting connects to tubing end.

Tube OD Compression Straight Coupling Adapter for converting Aluminum, Plastic, and Copper straight compression thread pipe Tubing.

👉【PREMIUM MATERIAL】: Our dot air brake fitting assortment is made of high quality CA360 brass, meets D.O.T FMVSS 571.106 and Air Brake System Requirements. With corrosion resistance, high temperature ductility and low permeability. Long service use, dot air brake fitting type: 1/8" 1/4", 3/8", 1/2", 5/8" .

👉【EASY TO INSTALL】: Our dot air line kit quicks disconnect simply push tubing in, need to use tools to fix loose parts to handle in tight places, so that use will be more firm and not easy to fall off. And pieces that contain a threaded end already have sealant pre applied to provide a secure connection.

👉【TYPICAL APPLICATION】: Air brake fittings assortment kit can be used with air systems, copper tubing in air lines brake systems, which is perfect for automotive car or truck repair,air operated seats, operating gauges, air horns, industrial workshops, air brake connections,towing machine hose connection and air brake connections or lawn mower repair.

Made of brass material and conform to DIN 2353, ISO 8434-1, and DIN EN 3851 standards. Extensively used in high working pressure and temperature applications.

Consists of a fitting body, nut and sleeve. The sleeve provides extra sealing capability.

Ensure an excellent and reliable sealing in high-pressure applications with strong mechanical grip design. Easy to use, fewer leak paths, dampen vibrations, ease of use and installation, and high durability.

Material & Construction:High quality Aluminum and Brass and nitrile.Nickel plated brass fitting guards against corrosion.

Installation: Easy to install,no flaring tool required.Double O-ring compression style fitting,the tubing also can be removed if needed.

Temperature Range:-40℉ to 140℉,Ratings ASTM F1282 and ASTM F1974.