Wafer type Centerline double stem Square stem back-seated butterfly valve without pin

一、Technical specification:
Design:Centerline design, double stem without pin, back-seat (hard seat ) butterfly valve
End connection: wafer end
Medium: Water,
Temperature range: -20℃ to 120℃.
Design standard: API 609
Side flange: ANSI 125 , ANSI 150, DIN PN10, PN16 or customer need
Top flange standard: ISO 5211
Test standard: API 598
Operation: Handle, gearbox , electric actuator, pneumatic actuator or hydraulic actuator

二、Application: Petroleum industry, Shipbuilding industry, Urban water supply and drainage pipeline, etc.

三、Material
Body: Ductile cast iron, cast iron,
Disc: SS 304, SS316, Ductile cast iron, Aluminum-bronze
Stem: SS316, SS410, SS416, SS304, SS 17-4PH
Seat: NBR, EPDM, VITON, high temperature EPDM, Food grade EPDM

四、Surface: Epoxy resin coating both inside and outside the body

五、Advantages:
1. With centerline design, simple structure and easily operation
2. Double stem of square connection between stem and disc, more reliable performance.
3. Pinless design to save material .
4. Back-seat design is more easily to assembly and disassembly