Fire Fighting Valve butterfly type and grooved

UL/FM high quality worm gear fire fighting grooved butterfly valve DN250 Product Description 1. Brief Introduction Grooved butterfly valve, casting iron Grooved butterfly valve UL certificate from ISO factory is my company under current domestic FGD system design products. To meet the limestone and gypsum slurry grout corrosion, and the calve stem plate using a special corrosion-resistant alloys, high-valve seat wear rubber meet the large number of suspended particles in the