Features: 1) Size: 40mm (1-1/2"), 50mm (2"), 65mm (2-1/2") 2) Material: aluminum alloy Features: Size: 40mm (1-1/2"), 50mm (2"), 65mm (2-1/2") Material: aluminum alloy1.aluminium alloy material.2.Casting productss.3.Different orifice orifice size4.Normal pressure: 1.6Mpa5.The surface is oxide treatment, anti-corrosion.6.Reasonable structure, easy connection tightly and with high sealablity.7. ...