Best Adapter Compression Union Straights in 2026

Size: The thread size of 6AN is 9/16-18UNF. OD of brab: 5/16 inch.

Material: Made of aluminum alloy 6061-T6.

Seal: The AN side of the flare is sealed by a 37 degree angle.

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

【Product Name】Straight Push-in Connect Fittings

【Material】Copper and Plastic

【Size】1/4" Tube OD x 1/8" NPT Thread，Notice - NPT Thread Size is a Nominal Pipe Size, and it Does Not represent the actual diameter

★WATER&FOOD USE MATERIALS: Our RO Fittings are made from safe,non-toxic materials.They are widely used for Countertop/Undersink RODI system,plumbing or drip irrigation System etc

★SIZE&TUBE COMPATIBLE WITH:1/4" Quick Connect fitting Size;Fits standard 1/4 RO Tubing used on most Water purification systems ( check your tube size carefully before order)

★EASY INSTALLATION: New generation Non-Locking Clip technology offers an easy DIY installation without tools required, Just Push in to Connect.

1/4" x 1/4" Tube push fit straight quick connect

Tube Quick Connect Push Fit Water Filters

Union Elbow Quick Connect

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.

Quick installation, simple and flexible, space-saving.

The tube fitting comes in a wide variety of models to meet all your needs in pneumatic piping.

Even after installation, the direction of tubing can be changed freely.

【Product Name】Direct push reducing hose fittings

【Material】Plastic

【Size】5/16" (8mm)Tube OD x 1/4" (6.35)Tube OD

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

No tools required,Push fit fittings

Easy to use,Mini quick connect push tee 1/4-Inch OD

Push fit fittings,Quick Connect Fitting 1/4" RO Water System

Quick connector 3/8" x 1/4" Tube push fit Reducing Straight Union,pack of 10.

Connect and disconnect quick and easy without any other tools,100% leak free, 100% Re-useable

Material: POM(Polyoxymethylene), Polyethylene Plastic Water Tube Fitting

【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

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

Type: Straight Union Same Diameter

Designed for Polyurethane or Nylon tubing Quick and Reliable connections

Reusable: Multiple connections/disconnections

Type:Push in fitting/Push to connect /Size:4mm Straight Union Connector

Fluid Admitted:Air Vacuum Water (no freezing)

Working Pressure:0-1.0MPa | 0-150psi/Applicable Tube:PU / PA / PE / PVC

Product Type —— Adapter(3/8"Male NPTx 1/2"Female NPT) with protective case,for industry connecting pipes or fittings with different end types, diameters, or materials,NPT thread size does not actual diameter, it is only nominal pipe size.

Product Material —— Forging of 304 stainless steel strength and resistance to corrosion.

Working Temperature —— Temperature range from -868 to 1472 degrees F/-500 to 800 degrees c.

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.

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.

Made of stainless steel 304, heavy duty, durable and corrosion resistant.

1/4" outer diameter tube

Fittings for connecting and extending stainless steel, copper, rigid and semi-rigid plastic tubing

Thru-Bulk Bulkhead Fittings is connect with 1/4" ID hose with the same size.Barbed fitting for a tight seal on hoses.

TIPS:The plastic bulkhead hose barb fittings can hold -9 °F to 175 °F temperature, but it's not resistant to oil.

Made of PP Polypropylene plastic, no toxic and crack.

✅[EXCELLENT MATERIAL]: Made of quality PU & plastic.High pressure resistance,can withstand strong pressure without tripping out

✅[PUSH TO CONNECT FITTING TYPE]: 1/2",3/8'',5/16'',1/4'', 5/32", fit for 12mm 10mm 8mm 6mm 4mm OD polyethylene pipe, PU/ PA/ PE/ PVC and nylon tube

✅[QUICK CONNECTION AND REMOVE]: Simple push in design for connecting to the tube and provide secure connection. It can be easily removed by pressing the release ring

The product is manufactured in China

The product is highly durable and easy to use

Easy installation and easy handling

304 Stainless Steel

Coupler Ferrule Mini Inner Dia : 10 mm

Adapter for connecting pipes or fittings of different types.

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.

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.

Union for connecting and disconnecting two pipes more easily than couplings

Push-to-connect fitting connects to pipes or tubing on both ends

Made of stainless steel for resistance to scaling and corrosion

👉【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.