Best Tee Threaded Tube Fittings in 2026

For use in connecting NPT pipe to schedule 40 PE flexible tubing in a straight run

Barbed fitting creates a tight seal on flexible tubing when used with a hose clamp (sold separately)

Maximum working temperature of 140 degrees F

Material - This 1/8" BSPP female thread quick disconnect plug is made of high-quality Stainless steel, Size: 26mm / 1.02 inch Length, male quick disconnect plug, 1/8 inch BSPP inner female thread on the other end, Rated to 4000 PSI, Max Pressure: 5000 PSI, Temperature Resistance: 1000 ℃.

Accuracy - Use NC machining, accurately, accurately, suitable for 8mm converter plug and 1/8" BSPP male thread, supplied with sealing ring washer, reliable and no leakage.

Easy to Operation - Simply connect each fill adapter to the quick disconnect air tool fittings, It can withstand 3000-5000 psi pressure, this is one of the needed items to have in your parts kit.

Hex bushing for connecting two pipes with different diameters

Size: Standard 3/8 inch NPT male to 1/4 inch NPT female.

Heavy-duty brass construction with rust proof, Easy to connect.

Straight adapter connects pipes or fittings of different types in a straight line

Push-to-connect fitting connects to pipes or tubing on one end and has an NPTF male connector on the other

Made of acetal copolymer plastic for low moisture absorption and high tensile and flexural strength

✔Tee Union Adapter: 3/8” male and female compression fittings x 1/4" tube quick connect, and two 1/2" NPT converter fittings.

✔Two Extra Converter Fittings: Fitting A : 1/2" male NPT and 3/8" female NPT threaded connections; Fitting B: 3/8" male NPT and1/2" female NPT threaded connections.Allows to connect both 1/2" and 3/8" water supply.

✔Rough Brass Constructions: Full copper material to prevent leakage, strong and long lasting life time

Thru-Bulk Bulkhead Fittings is connect with 3/8" 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.

WATER&FOOD USE: Products are made from safe,non-toxic materials tested by SGS. Our quick fittings are widely used in water purification,food/beverage system.

Tube OD 3/8" ，Female Thread 1/2" quick connector

No special tools required, easy to install

⚒【PREMIUM MATERIAL】- Made of brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability. The Fire Equipment Hexagonal Nipple Fitting offer long-term service

⚒【CONNECTION SIZE】- Hex nipple fitting 1-1/2" NH/NST to 1-1/2" NPT double male fire hose adapter. Male 1-1/2 inch NH / NST will only connect to a female 1 1/2 inch NH / NST; Male 1-1/2 inch NPT will only connect to a female 1-1/2 inch NPT/NPSH

⚒【UNIQUE DESIGN】- With hexagonal section in the middle for an increased bearing surface when adjusting the fitting with a wrench. Hex tube fitting as a short length of pipe with threaded ends for connecting threaded pipes

Heavy Duty Threaded Lock Design Securely Clamps Your Line to the Fitting

Adapts 3/8" Factory Fuel Rail to -6AN Male Fitting

Compatible With All Fuels such as Gasoline, Methanol, Ethanol, Etc

Note the thread size: flare connector threads are UNF threads, which are straight threads, not taper NPT threads.flare thread size is a Nominal Pipe size,does not actual diameter,1/4" flare actual thread diameter is 7/16 inch,1/4" NPT actual thread diameter is 0.54 inch.please confirm the size before purchase

Uses: One end is male flare thread, the other end is male NPT thread.flare coupler can be used in natural gas, refrigeration, hydraulic, etc., can be used with copper, aluminum, plastic pipes

Easy to install: flare accessories are easy to connect without soldering.

Heavy Duty Threaded Lock Design Securely Clamps Your Line to the Fitting

Adapts 5/16" Factory Fuel Rail to -6AN Male Fitting

Black Anodized Finish

Hose Line Fitting Adapter

Used To Easily Customize New Lines And Connect Flexible Hoses

Zinc Plated Tubing

Type: Standard 3/8" Tube OD (Compression) male to 1/4" inch NPT national pipe thread male.Compression nuts and ferrules included.5pcs

Reducing adapter for different size tube pipes or fittings,Fitting connects to tubing end and NPT male connects to Standard National Pipe Thread.

Tube OD Compression to NPT tube adapter for converting Standard National Pipe Thread (NPT) pipe to Aluminum, Plastic, and Copper straight compression thread pipe Tubing.

PREMIUM MATERIAL: Made of brass for corrosion resistance,the Fire Equipment Hexagonal Nipple Fitting has rust resistance, low magnetic permeability, and can offer long-term service.

ABOUT CONNECTION SIZE: Side 1 - Male 1 1/2 inch NH / NST will only connect to a female 1 1/2 inch NH / NST, Side 2 - Male 1 1/2 inch NPT will only connect to a female 1 1/2 inch NPT or 1 1/2 inch NPSH

UNIQUE DESIGN: Hex tube fitting as a short length of pipe with threaded ends for connecting threaded pipes, With a hexagonal section in the middle for an increased bearing surface when adjusting the fitting with a wrench, Hex nipple fitting 1-1/2" female National Pipe Taper (NPT) threaded connection on one end and a 1-1/2" male National Standard Thread (NST) or National Hose (NH) connection on the other

SUPREME QUALITY Durable, corrosion-resistant and lead-free brass female compressed adapter equipped with a gasket to create a tight seal for leak free connections.

VERSATILE APPLICATIONS Unique and revolutionary 1/4” quick connect to 1/4” female threaded compression adapter makes it a handy and versatile choice for connecting different tubing materials together, such as: copper, PEX, PE, plastic, and water filtration tubing.

COMPATIBILITY Suitable for both hot and cold water applications, this adapter is compatible with most 1/4" standard water filtrations systems and other applications that require a water supply connection such as: water filtration systems, ice maker lines, drinking fountains, water dispensers, ice machines, coffee machines, aquariums, etc. Adapter may be used in potable and non-potable water distribution systems.

SUPREME QUALITY Durable, corrosion-resistant and lead-free brass female compressed adapter equipped with a gasket to create a tight seal for leak free connections.

VERSATILE APPLICATIONS Unique and revolutionary 1/4” quick connect to 3/8” female threaded compression reducing adapter makes it a handy and versatile choice for connecting different tubing materials together, such as: copper, PEX, PE, plastic, and water filtration tubing.

COMPATIBILITY Suitable for both hot and cold water applications, this adapter is compatible with most 1/4" and 3/8” standard water filtrations systems and other applications that require a water supply connection such as: water filtration systems, ice maker lines, drinking fountains, water dispensers, ice machines, coffee machines, aquariums, etc. Adapter may be used in potable and non-potable water distribution systems.

Material: Brass; External Thread: M14; Internal Thread: M12; Thread Pitch: 1mm; Height: 10mm / 0.39 inch; Packing List: 5 x Brass Thread Adapter

Advantage: The product is made of brass material, providing good durability and stability. Convenient to use, it can convert two different thread.

Instruction: All threads body is very easy to use, just thread it into a nut or thread pipe.

Plastic push in fitting

3/8-inch OD tube x 1/2-inch female pipe thread

Quick connection

★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"od 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.

Color: Golden; Material: Brass; Thread: G1/2 Male x M14*1.5 Male; Hole Dia: 8mmx14mm/0.31x0.55inch(ID*OD), suitable for connecting 8mm(OD) copper pipe; Total Size: 39x30x21mm/1.54x1.18x0.83inch(L*W); Packing List: 2 x Brass Pipe Tube Adapter

Advantage:The tube coupler is made of brass, it is durable and reusable.; tube fitting comes with brass connector, brass sleeve, and nuts in one set, which allows you to connect pipe easily.

Instruction:1. Insert the copper pipe with the corresponding diameter into the brass nut, and slide the brass sleeve up to the nut on its threaded side. ; 2. Put the tubing into the connector, and install and fix the pipe to the brass connector with a spanner.

Color: Golden; Material: Brass; Thread: G1/2 Male x M18*1.5 Male; Hole Dia: 12mmx18mm/0.47x0.71inch(ID*OD), suitable for connecting 12mm(OD) copper pipe; Total Size: 41x35.5x22mm/1.61x1.4x0.87inch(L*W); Packing List: 1 x Brass Pipe Tube Adapter

Advantage:The tube coupler is made of brass, it is durable and reusable.; tube fitting comes with brass connector, brass sleeve, and nuts in one set, which allows you to connect pipe easily.

Instruction:1. Insert the copper pipe with the corresponding diameter into the brass nut, and slide the brass sleeve up to the nut on its threaded side. ; 2. Put the tubing into the connector, and install and fix the pipe to the brass connector with a spanner.

Color: Golden; Material: Brass; Thread: G3/8 Male x M12*1.25 Male; Hole Dia: 6mmx12mm/0.24x0.47inch(ID*OD), suitable for connecting 6mm(OD) copper pipe; Total Size: 35.5x29x17mm/1.4x1.14x0.67inch(L*W); Packing List: 2 x Brass Pipe Tube Adapter

Advantage:The tube coupler is made of brass, it is durable and reusable.; tube fitting comes with brass connector, brass sleeve, and nuts in one set, which allows you to connect pipe easily.

Instruction:1. Insert the copper pipe with the corresponding diameter into the brass nut, and slide the brass sleeve up to the nut on its threaded side. ; 2. Put the tubing into the connector, and install and fix the pipe to the brass connector with a spanner.