SUNGATOR 6-Pack 1/2-Inch Push Fit Plumbing Tee, Push-to-Connect Plumbing Fittings, Brass Pipe Connector T Fittings for Copper, PEX, CPVC, Lead Free Certified - - Amazon.com
NTA M12 M Contour Press Jaw for 12 mm, Press Jaw Insert Suitable for HPZ Hand Crimping Pliers + Changeable Jaw WUP Copper Pipe, Stainless Steel Tube, C-Steel Pipe : Amazon.de: DIY
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VEVOR Crimping pliers 12 mm, 15 mm, 18 mm, 22 mm, 28 mm, crimping pliers steel pipe press pliers with ergonomic handle and 360° rotating head, crimping pliers portable, manual pressure clamp diameter 12-28 m : Amazon.de
Amazon.com: Little Giant CV-10 Check Valve for VCC, VCM, VCMA and VCL-14/24, 1/4" FNPT x 3/8" ID vinyl tubing - 89695 : Industrial & Scientific