![1/2" NPT Female to 3/8" NPT Female Brass Pipe Reducing/Reducer Coupling: Industrial Pipe Fittings: Amazon.com: Industrial & Scientific 1/2" NPT Female to 3/8" NPT Female Brass Pipe Reducing/Reducer Coupling: Industrial Pipe Fittings: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/61pVI-6Yo8L.jpg)
1/2" NPT Female to 3/8" NPT Female Brass Pipe Reducing/Reducer Coupling: Industrial Pipe Fittings: Amazon.com: Industrial & Scientific
![1/8 1/4 3/8 1/2 3/4 1 inch Reducing coupler reducer union thread pipe joint stainless steel tube connector changeable joint 1/8 1/4 3/8 1/2 3/4 1 inch Reducing coupler reducer union thread pipe joint stainless steel tube connector changeable joint](https://ae01.alicdn.com/kf/HTB1tdyCSAvoK1RjSZFwq6AiCFXad/1-8-1-4-3-8-1-2-3-4-1-inch-Reducing-coupler-reducer-union.jpg)
1/8 1/4 3/8 1/2 3/4 1 inch Reducing coupler reducer union thread pipe joint stainless steel tube connector changeable joint
![Southland 1/2 in. x 3/8 in. Black Malleable Iron FPT x FPT Reducing Coupling FItting 521-332HN - The Home Depot Southland 1/2 in. x 3/8 in. Black Malleable Iron FPT x FPT Reducing Coupling FItting 521-332HN - The Home Depot](https://images.thdstatic.com/productImages/b5a69c27-cdac-4545-b6d1-12ae9049e31f/svn/black-southland-black-pipe-fittings-521-332hn-64_600.jpg)
Southland 1/2 in. x 3/8 in. Black Malleable Iron FPT x FPT Reducing Coupling FItting 521-332HN - The Home Depot
![Amazon.com: Legines Brass Reducing Coupling 1/2" NPT Female x 3/8" NPT Female, Hex Reducer Coupler Adapter Pipe Fitting 1200psi (Pack of 2) : Industrial & Scientific Amazon.com: Legines Brass Reducing Coupling 1/2" NPT Female x 3/8" NPT Female, Hex Reducer Coupler Adapter Pipe Fitting 1200psi (Pack of 2) : Industrial & Scientific](https://m.media-amazon.com/images/I/518odF4YDBL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Legines Brass Reducing Coupling 1/2" NPT Female x 3/8" NPT Female, Hex Reducer Coupler Adapter Pipe Fitting 1200psi (Pack of 2) : Industrial & Scientific
![Merit Brass - Pipe Reducer: 1/2 x 3/8″ Fitting, 304 Stainless Steel - 36900439 - MSC Industrial Supply Merit Brass - Pipe Reducer: 1/2 x 3/8″ Fitting, 304 Stainless Steel - 36900439 - MSC Industrial Supply](https://cdn.mscdirect.com/global/images/ProductImages/3690043-24.jpg)
Merit Brass - Pipe Reducer: 1/2 x 3/8″ Fitting, 304 Stainless Steel - 36900439 - MSC Industrial Supply
![RELIABILT 1/2-in x 3/8-in Galvanized Reducing Coupling in the Galvanized Pipe & Fittings department at Lowes.com RELIABILT 1/2-in x 3/8-in Galvanized Reducing Coupling in the Galvanized Pipe & Fittings department at Lowes.com](https://mobileimages.lowes.com/productimages/f79dd89b-33fd-464c-8590-86f34884d9f0/62943314.jpg?size=pdhism)
RELIABILT 1/2-in x 3/8-in Galvanized Reducing Coupling in the Galvanized Pipe & Fittings department at Lowes.com
![SharkBite Reducing Coupling, 3/8 Inch by 1/2 Inch, Push-to-Connect, PEX, Copper, CPVC, PE-RT, HDPE - Walmart.com SharkBite Reducing Coupling, 3/8 Inch by 1/2 Inch, Push-to-Connect, PEX, Copper, CPVC, PE-RT, HDPE - Walmart.com](https://i5.walmartimages.com/asr/816e6669-a51b-484c-b6f7-f05911b53c49_1.18ff314d228162eb7098e2e9c029c611.jpeg)
SharkBite Reducing Coupling, 3/8 Inch by 1/2 Inch, Push-to-Connect, PEX, Copper, CPVC, PE-RT, HDPE - Walmart.com
![Amazon.com: FasParts 1/2" Female NPT to 3/8" Female NPT FIP FPT Reducing Coupling Brass Pipe Fitting Fuel/Air/Water/Boat/Gas/Oil WOG : Industrial & Scientific Amazon.com: FasParts 1/2" Female NPT to 3/8" Female NPT FIP FPT Reducing Coupling Brass Pipe Fitting Fuel/Air/Water/Boat/Gas/Oil WOG : Industrial & Scientific](https://m.media-amazon.com/images/I/61wK7PS9nhL.jpg)
Amazon.com: FasParts 1/2" Female NPT to 3/8" Female NPT FIP FPT Reducing Coupling Brass Pipe Fitting Fuel/Air/Water/Boat/Gas/Oil WOG : Industrial & Scientific
![SharkBite 1/2-inx 3/8-in (1/2-in O.D.) PEX Crimp Brass Reducing Coupling in the PEX Pipe, Fittings & Specialty Tools department at Lowes.com SharkBite 1/2-inx 3/8-in (1/2-in O.D.) PEX Crimp Brass Reducing Coupling in the PEX Pipe, Fittings & Specialty Tools department at Lowes.com](https://mobileimages.lowes.com/productimages/29175e03-0c6b-4445-ba3a-2c6ca6d8eede/07825487.jpg?size=pdhism)
SharkBite 1/2-inx 3/8-in (1/2-in O.D.) PEX Crimp Brass Reducing Coupling in the PEX Pipe, Fittings & Specialty Tools department at Lowes.com
![914573-3 Reducing Coupling: Brass, 1/2" x 1/8" Pipe Size, Female NPT x Male NPT, 1 1/4" Overall Lg | Imperial Supplies 914573-3 Reducing Coupling: Brass, 1/2" x 1/8" Pipe Size, Female NPT x Male NPT, 1 1/4" Overall Lg | Imperial Supplies](https://www.imperialsupplies.com/ProductImageThumbs400/42/46/PI_Asset_1204246.jpg)
914573-3 Reducing Coupling: Brass, 1/2" x 1/8" Pipe Size, Female NPT x Male NPT, 1 1/4" Overall Lg | Imperial Supplies
![1/2" NPT Female x 3/8" NPT Female Coupling Brass Reducing Fip Coupler Pipe Fitting, 5pcs - Amazon.com 1/2" NPT Female x 3/8" NPT Female Coupling Brass Reducing Fip Coupler Pipe Fitting, 5pcs - Amazon.com](https://m.media-amazon.com/images/I/61NHrtlWg7L.jpg)