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Product features and benefits
- Butterfly valve for gas according to EN 13774
- Face-to-face length acc. to EN 558-1, basic series 14 (DIN 3202, F4)
- With flange ends on both sides acc. to EN 1092-2
- Double-offset disk bearing mounted in maintenance-free bushing
- Medium free bearing (dry shaft) in body by means of double O-ring sealing and closed disk eyes
- Wear-resistant, corrosion-resistant and undermining-resistant seat
- Possible to replace profile sealing ring without disassembling the disk
- Automatic sealing system with enclosed and pressure-supported profile sealing ring
- Vacuum tight up to 1 Torr
- Tight in both flow directions acc. EN 12266
- With self-locking, fully enclosed, maintenance-free worm gear including mechanical position indicator
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Material
- Body: Ductile iron EN-GJS-400-15 (GGG-40)
- Disk: Ductile iron EN-GJS-400-15 (GGG-40) (exception: DN 100 / DN 125 stainless steel 1.4408)
- Valve sealing: NBR
- O-rings: NBR
- Butterfly valve stem: Stainless steel 1.4021
- Seat: High-alloy weld overlay, microfinished
Corrosion protection
- Body: Internally and externally epoxy coated acc. to GSK guidelines
- Disk: Epoxy coated according to GSK guidelines (exception: DN 100 / DN 125 stainless steel)
Version
- With electric actuator
- With handwheel
- With pneumatic actuator
- With hydraulic actuator
- Special designs and bigger sizes available on request
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