... & CCC certified 5. quick delivery fire hydrant, fire hydrant valve,indoor fire hydrant, 1.conventional type: a)SN50, DN50; b)SN65, DN652 ... .pressure reducing&stablizing type: SNW65-I, DN653.revolving type: SNZ65, ... 4MPa.7.ISO & CCC certified8.quick deliveryThe indoor fire hydrant is a fixed indoor fire-fighting equipment in factories, ...