Model Flanged Type - Butterfly Valves
From Butterfly Valves
Structural design complies with BS 5155. Flange drilling acc. BS4504, Section 3.2, ANSI B16.1, Class125/100 and DIN2501 PN10, PN16 and JIS B221010K, JISG55277.5K. Operating system can be worm gear, pneumatic actuator and electric actuator. Actuator connection acc.ISO5211. Eccentric disc, dual parallel joist structure, Min. flow obstruction, vibration-free even under high flow rate, save energy. Stainless steel seat. Unique sealing ring, with saw-tooth sides, embedded directly into disc, bolt-free connection, easy on-line replacement, uniform & tight sealing effect, aspiratory rubber sealing ring, prolonged service life. Unique taper pin, US patent design pin, bolt free & clearance free connection, eccentric pin maintains strength of shaft, large contact area, tight for long service, good exchangeability. Excellent sealing effect, leakage free even under ±1 degree offset between sealing ring and seat. Self-lubrication type shaft bearing, small operation friction and no requirement for oil.