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JONENG
STAINLESS STEEL Triple Offset PTFE Seat Ring Butterfly Valve
Stainless steel triple offset PTFE seat ring butterfly valves are available in manual, electric, and pneumatic types, sizes DN50–DN600, materials 304/316L, featuring triple-offset design, PTFE sealing, corrosion resistance, high-pressure tolerance, and long service life.
Working Principles
The stainless steel triple offset PTFE seat ring butterfly valve operates by rotating the disc around three offset axes, which separates the disc from the seat during opening and closing. When the actuator—manual, electric, or pneumatic—rotates the disc parallel to the flow, the valve opens, allowing fluid to pass with minimal pressure loss. During closing, the disc moves along the offsets and presses against the PTFE seat ring, creating a tight, uniform seal that prevents leakage. The triple-offset design reduces friction and wear, enhancing durability and reliability, while the stainless steel body ensures corrosion resistance, making it suitable for chemical, water, and industrial piping systems.
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
Triple-offset design minimizes friction between disc and seat, ensuring tight sealing and extended service life even under high pressure and temperature conditions.
PTFE seat ring provides excellent chemical resistance, preventing leakage and ensuring reliable performance with corrosive or aggressive media.
Stainless steel body (304/316L) offers superior corrosion resistance, mechanical strength, and durability for industrial and chemical applications.
Suitable for on/off and throttling operations, allowing precise flow control with minimal pressure drop across the valve.
Compact and robust construction simplifies installation, maintenance, and integration into various piping systems, ensuring efficient and safe operation
Application
The stainless steel sanitary three-piece manual butterfly valve with lever handle is mainly used in industries with high requirements for hygiene standards. The following are several typical industries. Food processing: control fluid flow to ensure that the production environment meets hygiene standards. Beverage production: regulate beverage flow to prevent contamination and ensure cleanliness and hygiene. Dairy products: control emulsion flow to ensure that pipes and valves are clean and free of residue. Pharmaceutical industry: regulate liquid delivery to meet strict hygiene requirements. Biopharmaceuticals: control the flow of raw materials to ensure no pollution and ensure stable production. Chemical industry: used for fluid control to ensure high standards of cleanliness and safety requirements.
Working Principles
The stainless steel triple offset PTFE seat ring butterfly valve operates by rotating the disc around three offset axes, which separates the disc from the seat during opening and closing. When the actuator—manual, electric, or pneumatic—rotates the disc parallel to the flow, the valve opens, allowing fluid to pass with minimal pressure loss. During closing, the disc moves along the offsets and presses against the PTFE seat ring, creating a tight, uniform seal that prevents leakage. The triple-offset design reduces friction and wear, enhancing durability and reliability, while the stainless steel body ensures corrosion resistance, making it suitable for chemical, water, and industrial piping systems.
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
Triple-offset design minimizes friction between disc and seat, ensuring tight sealing and extended service life even under high pressure and temperature conditions.
PTFE seat ring provides excellent chemical resistance, preventing leakage and ensuring reliable performance with corrosive or aggressive media.
Stainless steel body (304/316L) offers superior corrosion resistance, mechanical strength, and durability for industrial and chemical applications.
Suitable for on/off and throttling operations, allowing precise flow control with minimal pressure drop across the valve.
Compact and robust construction simplifies installation, maintenance, and integration into various piping systems, ensuring efficient and safe operation
Application
The stainless steel sanitary three-piece manual butterfly valve with lever handle is mainly used in industries with high requirements for hygiene standards. The following are several typical industries. Food processing: control fluid flow to ensure that the production environment meets hygiene standards. Beverage production: regulate beverage flow to prevent contamination and ensure cleanliness and hygiene. Dairy products: control emulsion flow to ensure that pipes and valves are clean and free of residue. Pharmaceutical industry: regulate liquid delivery to meet strict hygiene requirements. Biopharmaceuticals: control the flow of raw materials to ensure no pollution and ensure stable production. Chemical industry: used for fluid control to ensure high standards of cleanliness and safety requirements.
