1/2'' BSPT Male Female Thread to 20mm Plastic Quick Connector Straight Blue Black Caps Adapter PE Pipe Fittings for Irrigation - (Color: Black Cap, Size: 20mm, Thread Specification: Female Thread) - - Amazon.com
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Amazon.com: Nostalgie Pipe Fittings PE Pipe Fittings PE Pipe Quick Joint Pipe Fittings Tap Pipe 20/25/32/40/50/63mm Fast Joint Tube Fitting (Color : Blue, Size : 20mm) : Industrial & Scientific
SharkBite 1/2 Inch MNPT Adapter, Push to Connect Brass Fitting, Pack of 4, PEX Pipe, Copper, CPVC, PE-RT, HDPE, U120LFA4: Amazon.com: Tools & Home Improvement
Caplugs 99394680 Plastic Threaded Plug for Pipe Fittings. P-68V, PE-HD, to Plug Thread Size 3/4 NPT", Red (Pack of 40): Amazon.com: Industrial & Scientific