Stainless steel manual gearbox Keystone transformer milk flange threaded butterfly valve

The stainless steel manual gearbox Keystone transformer milk flange threaded butterfly valve operates by using a hand-operated gearbox to rotate the valve shaft, which turns the central disc inside the valve body. When the disc rotates parallel to the flow, the valve opens, allowing milk or other fluids to pass smoothly with minimal pressure drop. Rotating the disc perpendicular to the flow closes the valve, pressing the disc tightly against the seat to form a reliable seal and prevent leakage. The gearbox amplifies manual torque, enabling easy operation of larger valves. Flanged or threaded connections ensure secure pipeline installation, while the stainless steel construction provides corrosion resistance and hygienic performance suitable for dairy and food-grade applications.

Valve parts

• Constructed from 316L stainless steel, providing excellent corrosion resistance, mechanical strength, and long-term durability for industrial and chemical applications.
• Lug-type body allows secure flange installation, enabling easy maintenance and partial pipeline disassembly without affecting the entire system.
• Gearbox operation amplifies manual torque, making it easier to operate large-diameter valves with minimal effort.
• Visual position indicator provides clear feedback on valve status, helping operators quickly confirm open or closed positions.
• The disc and seat design ensures reliable sealing, low leakage, and stable flow control under varying pressure and temperature conditions.
  

Sanitary Butterfly valve widely use in low and medium viscosity liquid for food and beverage, beer, dairy, pharmaceutical etc with high precision and purity requirements industries.