Product Name: Air Valve for Sewer Water Model NO.: ST-AVSW01 Size: Dn50-200 Trademark: SITG Transport Package: Plywood Cases Specification: DN50-DN200 Origin: Hebei, China HS Code: 8481804090 Product Description Air release valve professional producerMaterials: Cast iron/Ductile iron/Stainless steel/Carbon steel/PlasticDesign: simple two function Triplefunction combine Fluid: for clean water and sewer water, chemical liquidSize: 1/2"-2" threaded DN40- DN300 flangedWorking pressure: PN6/10/16/25/40.Working Temperature: 0-80 centigradeCurrent size:Materials: GGG40 BODY,EPOXY COATING 250 MICRONSS/ABS BALL, GALVANIZED BOLTINGSFULL BOREDNDouble ball auto releaseSingle ballunit WT.unit WT.5016.514.06517.014.58017.515.010032.029.5REDUCING BORE15034.031.520038.035.5FULL BORE, CARBON STEEL WELDED BODY15038.536.020060.057.025087.084.0300120.0117.0Special requests available upon request