Zero offset butterfly valve

Feature:
Design standard: API, ASME, EN, ISO, JIS, DIN, BS, GB 
The disc and stem of zero offset butterfly valves are situated at the center of the valve seat which is centered in the valve body
Material: Carbon Steel,Stainless Steel,Nickel Aluminum Bronze,alloy steel,etc
Use in oil-gas, power generation HVAC, water and wastewater treatment, ship building, metal-mineral processing, chemical processing, pharmaceutical and food-beverage industries