Double eccentric butterfly valve to EN 593 w. integral seat and IP67 gearbox w. handwheel for drinking water and neutral liquids to max. 70°C

Detailed:

Roland double eccentric butterfly valves are designed with tilted and fixated disc for extended service life and easy operation. The disc seal is made of Roland ’s drinking water approved EPDM rubber featuring an excellent compression set and thus ability to regain its original shape. The GSK/WRAS approved epoxy coating and fully encapsulated shaft/disc connection ensure high durability. The valves are suitable for bi-directional application.        

Features

•The tilted disc releases the compression of the disc sealing after a few degrees of opening, which extends the durability and gives low operating torques

•The disc is fixated to prevent wear and fluttering

•The disc seal profile and rubber quality ensure low closing torques

•Seal retainer ring of stainless steel

•The threaded bolt holes in the disc are corrosion protected with O-rings

•Machined and epoxy coated ductile iron seat integrated in the body

•Shaft of stainless steel with self-lubricating bearings

•The shaft ends are fully encapsulated in the disc and are fixed with dowels corrosion protected with O-rings and a stainless steel security plate. Key and keyway as backup.

•Replaceable shaft sealing with two EPDM O-rings on each side of a bronze bushing, and a flat NBR gasket

•Optional locking device

•Body and disc of ductile iron with fusion bonded epoxy to DIN 30677-2, GSK approved, RAL 5017, according to WRAS-DVGW/W270/UBA