Description:Water Drain Valve, air tank drain cocks, drain valve; Thread size:1/8", 1/4", NPT or BSP thread; ... Description:Water Drain Cocks, air tank drain cocks, drain valve; Thread size:1/8", 1/4", NPT or BSP thread ... ; Material:Brass body, steel handle; Function:Designed to provide high flow capacity, leak-proof shutoff and non-freezing operation; Please kindly ...