... , AIR REL- EASING VAL VALVE TYPE: BUTTERFLY VALVE,GATE VALVE, CHECK VALVE,SQU-ARE/ROUND PENSTOCK, AIR REL-EASING VALVE, GLOBE VALVE, FOOT VALVE, "Y"TYPE STRAINER ... , WELDING, SOCKET&SPIGOT.MAIN MATERIAL: CAST IRON, DUCTILE CAST IRON, FORGED CARBON STEEL, CAST STEEL, ST-AINLESS STEEL. BRASSSEALING TYPE: NON ...