Keystone Hard Rubber Butterfly Valve 2"

Keystone Hard Rubber Butterfly Valve 2"
 
Features• Factory testing of every valve at full rating ensures 100% bubble-tight shut-off.• Standard actuator flange to facilitate the exchange operator and mount directlyKeystone various actuators.• One-piece wafer-thin disc-stem provides high strength and control discs really positive and very minimum obstruction to flow. gap-free surface which makes it ideal for hygienic duty.• Primary seal formed by contact seat / shaft / hub exceed the pressure rating of the valve. The body is completely isolated from the media flow.• Secondary shaft seal is suitable for pressure and vacuum is self adjusting.• Patented seat dove tail require bonding. Creating seat replacement simple and fast. The edge of the extra weight against tearing.• Hub seal is provided by the contact between the surface of the seat preloaded flatted and rounded polished disc-hub area for positive sealing at all disc positions.• Molded-in O-ring provides a positive lead sealing and eliminates the need for gaskets.• Heavy duty top bushing absorbs side thrust loads. Adjusting sealing for bothdirection is also suitable for vacuum.