STAINLESS STEEL PTFE Seat Ring Keystone Transformer Butterfly Valve
The stainless steel butterfly valve is a hygienic flow control device designed for food, beverage, pharmaceutical, and biotech processing. It uses a rotating disc to regulate or isolate media with a simple quarter-turn operation. The double flange design ensures strong, secure pipeline connections and precise alignment. Manufactured from high-grade stainless steel, it offers excellent corrosion resistance, smooth internal surfaces, and easy cleaning, meeting strict sanitary standards while providing reliable, efficient performance.
Working Principles
The butterfly disk is installed in the diameter direction of the pipeline. When the butterfly valve in the pipeline, the disk rotates around the axis line, and the rotation angle range is between 0-90 degree. When the valve does not rotate at 0 degree, the valve disk is closed. When the valve rotates to 90 degree, the valve disk is opened absolutely.
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. |
Valve parts
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 |
Features
Features a PTFE seat ring that provides excellent chemical resistance, low friction sealing, and reliable performance under corrosive media and varying temperature conditions.
Designed with a Keystone transformer structure, allowing flexible actuator mounting, precise control, and easy conversion between manual, pneumatic, or electric operation.
Stainless steel body ensures high mechanical strength, corrosion resistance, and long service life in demanding industrial, sanitary, and chemical processing applications.
Smooth internal flow path minimizes pressure loss and prevents media buildup, supporting efficient flow control and easy cleaning during routine maintenance.
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.
