The stainless steel butterfly valve is a durable flow control valve for dairy pipelines, featuring manual gearbox operation, secure flange or threaded connections, hygienic design, and reliable sealing for precise on/off control.
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JONENG
The stainless steel butterfly valve is a durable flow control valve for dairy pipelines, featuring manual gearbox operation, secure flange or threaded connections, hygienic design, and reliable sealing for precise on/off control.
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.
Working Pressure | 10 Bar (Max. Pressure is 16bar for but welded connection in small sizes |
Working temperature | -10ºC TO + 120ºC |
Size | 1/2”-12”, DN15-DN300 |
Grade | AISI304 and AISI316L |
FDA approved gaskets in silicone, EPDM, viton, PTFE | |
Connection | Clamp, Weld, Thread,male threaded; female threaded; flange end;union connection |
Surface | Sanitary inside polish (Ra ≤ 0.8 μm) |
Sanitary outside polish (Ra ≤1.6 μm) | |
Standard | ISO, 3A, SMS, RJT, DIN and so on |
Butterfly valve disc and body is made from forging | |
Manual or pneumatic actuated or electric actuated are chosen as per the different applications. | |
Body | Stainless steel AISI316L or AISI 304 (1.4301/1.4404) |
Disc | AISI304 or AISI316L |
Pull-position handle | Stainless Steel Material, Round type or square type |
Multi-position Gripper Handle | ABS gripper handle, SS gripper handle, 2/3/4/12 positions to adjustment, Universal type |
Gasket | EPDM, VITON(FPM), Silicone, different color is available |
Bushing | EPDM or PTFE, other material request |
Nut | Stainless Steel 304 or 316 Material or other request |
Bolt | Stainless Steel 304 or 316 Material or other request |
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.
Working Principles
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.
Feature and Specification
Stainless Steel Butterfly Valve Specification Chart
Working Pressure | 10 Bar (Max. Pressure is 16bar for but welded connection in small sizes |
Working temperature | -10ºC TO + 120ºC |
Size | 1/2”-12”, DN15-DN300 |
Grade | AISI304 and AISI316L |
FDA approved gaskets in silicone, EPDM, viton, PTFE | |
Connection | Clamp, Weld, Thread,male threaded; female threaded; flange end;union connection |
Surface | Sanitary inside polish (Ra ≤ 0.8 μm) |
Sanitary outside polish (Ra ≤1.6 μm) | |
Standard | ISO, 3A, SMS, RJT, DIN and so on |
Butterfly valve disc and body is made from forging | |
Manual or pneumatic actuated or electric actuated are chosen as per the different applications. | |
Features
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.
Application
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.
