D342X-16 ductile iron double eccentric butterfly valve is chinese origin, which widely used in water source projects, urban water supply and drainage, sewage treatment, electric power, petroleum, petrochemical, heat supply, shipbuilding, medicine and metallurgy industries. This valve has been used for regulating or cutting off liquids for a lot of project in China.

Product characteristics

• Resilient seated 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 1092-2
• 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
• 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
• Blow-out proof shaft and shaft sealing
• With self-locking, fully enclosed, maintenance-free worm gear including mechanical position indicator

Main Materials

• Body: Ductile cast iron EN-JS 1030 (GGG-40)
• Disk: Ductile cast iron EN-JS 1030 (GGG-40)
• O-rings: EPDM
• Butterfly valve stem: Stainless steel 1.4462
• Shaft bearing: bronze, SF-1
• Seat: EPDM, NBR
Corrosion protection
• Body: Inside 3 mm hard rubber coating and outside epoxy coating
• Disk: 3 mm hard rubber coating

Operation opitions

• With handwheel
• With electric actuator
• With pneumatic actuator
• With hydraulic actuator
• Special designs and bigger sizes available on request