Product characteristics and benefits

• Elastic sealing in accordance with EN 593
• Face-to-face length acc. to EN 558-1, basic series 14 (DIN 3202, F4)
• With flange ends on both sides acc. to EN 1092-1
• Double-offset disk bearing mounted in maintenance-free bushing
• Wear-resistant, corrosion-resistant and undermining-resistant seat
• Possible to replace profile sealing ring without disassembling the disk
• Sealing system consisting of profile sealing ring PTFE compound, with inside flat spiral spring
• Tight in both flow directions
• Blow-out proof shaft and shaft sealing
• With self-locking, fully enclosed, maintenance-free worm gear including mechanical position indicator

Materials

• Body: Welded steel S235JRG2
• Disk: Welded steel 1.0038
• Valve sealing: PTFE compound
• O-rings: High-temperature resistant
• Butterfly valve stem: Stainless steel 1.4021
• Shaft bearing: Zincfree bronze
• Seat: Stainless steel, microfinished

Corrosion protection

• Body: Inside and outside aluminium-bronze coating
• Disk: Aluminium-bronze coating

Versions

• Standard version as described
• With handwheel Note
• With electric actuator
• With pneumatic actuator
• With hydraulic actuator
• Special designs available on request
• With butt welding ends
• With mechanical blocking of the disk (UVV locking)
• Sealing of bearing with graphite packing rings
• With water seal proof connection
• Disk made of ductile cast iron EN-JS 1030 (GGG-40)