Product Type: Butterfly ValveProduct Name: Multi-layer Hard Sealing Butterfly ValveProduct Details:Place of Origin: ChinaCertification: ISO9001-CETechnical Characteristics1. This hard seal butterfly valve is simple in structure and light in weight. It is quite flexible to open and close.2. We adopt stainless steel for secondary seal ensuring its long service life.3. The metal hard sealing butterfly valve owns low flow resistance coefficient and high flow capacity.4. This hard seal butterfly valve has anti-aging, radiation-proof, sturdy and durable functions.5. Nominal diameter of our butterfly valves varies from 100 to 3000 mm. Nominal pressure ranges from 0.6 to 2.5MPa.