Water Hammer Arrester, Sub Brand: MiniRester™ , Pipe Size: 3/8 inch OD, Connection Type: Compression x Female Compression, Overall Height: 4 inch, Width: 2 inch, Material: 304 Stainless Steel Body, Polypropylene with (2) EPDM O-Rings Piston, Nickel-Plated Lead-Free Machined Brass Tee Body, Low Lead Compliant: Yes, Maximum Working Pressure: 350 psi, Maximum Working Temperature: 250 Deg F, Standards/Approvals: NSF 61, ASSE to the ANSI/ASSE 1010-2004 Standard, AA Size, cUPC Listed, UPC Certified