... replacement;3.30 "72 "eccentric structure, equipped with overflow valve disc way, can obtain higher intensity, light weight, the more ... disc seal face for stainless steel, can reduce the valve shut up torque and longer service life.5. Through ... valve, within the scope of reliable performance;8. Design pressure, completely sealed, leakage is zero AWWA C504 Flange Concentric Rubber Lined Butterfly Valve ...