Homewerks 240-2-12-12 No-Lead Swing Check Valve, Female Thread x Female Thread, Brass, 1/2-Inch Size: 1/2-Inch Model: 240-2-12-12 (Hardware & Tools Store) Complies with 0.25 Percent weighted average lead content on wetted surfaces 200 PSI non-shock WOG Meets ANSI / NSF 61 low lead requirements