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Stainless Steel Sanitary Polished Welded Duckbill Butterfly Valve
The stainless steel sanitary welded duckbill butterfly valve is designed for high-hygienic standard industries such as food, pharmaceuticals, and bioengineering, aiming to achieve aseptic sealing, corrosion resistance, and efficient fluid control. Its duckbill valve seat fits tightly with the butterfly plate to avoid medium residue and ensure dead-angle flow, meeting GMP, FDA and other certification requirements. The valve body is made of 316L stainless steel, with a polished surface, corrosion-resistant and easy to clean, and supports CIP/SIP online sterilization. The butterfly valve has a simple structure, can be quickly opened and closed by rotating 90°, reducing pressure loss, and is suitable for high-purity media transportation. Welding connections (such as TIG welding) ensure pipeline sealing and avoid the risk of contamination of flanges or threaded interfaces. This design improves fluid control efficiency while ensuring hygiene and safety, and is a key component of high-clean process systems.
Working Principles
The working principle of the stainless steel sanitary welded duckbill butterfly valve is to control the on-off or flow regulation of pipeline media by rotating the valve plate. The specific steps are as follows: When the valve is closed, the valve plate (butterfly plate) rotates 90° under the drive of the drive device (manual, pneumatic or electric), and fits tightly with the duckbill elastic valve seat to form a dead angle seal and block the flow of the medium; when the valve is opened, the valve plate rotates with the valve stem to a position parallel to the pipeline, allowing the medium to pass smoothly. Its specially designed duckbill valve seat can adaptively deform when under pressure to enhance sealing, which is especially suitable for fluid control with high cleanliness requirements.
Stainless steel sanitary welded duckbill butterfly valve options:
Drive mode: manual, pneumatic, electric
Seal material: EPDM, PTFE, silicone (FDA compliant)
Connection method: welding, quick-release, flange
Control method: switch type, regulating type
Surface treatment: polishing, sandblasting
Special customization: add positioner, anti-mixing function, etc.
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
● The stainless steel sanitary welded duckbill butterfly valve adopts a unique self-cleaning design. The contact surface of the valve plate and the valve seat is designed as a self-cleaning structure, which reduces the problem of fouling.
● The stainless steel sanitary welded duckbill butterfly valve adopts a low pressure difference design, which allows it to open stably under low flow and low pressure conditions.
● The special leak-proof structure of the stainless steel sanitary welded duckbill butterfly valve body and valve stem effectively reduces the risk of valve leakage under high pressure, and is suitable for occasions requiring high sealing and leak-proof properties.
● The stainless steel sanitary welded duckbill butterfly valve seat can be fine-tuned according to working conditions to optimize the sealing performance.
● The inner and outer surfaces of the stainless steel sanitary welded duckbill butterfly valve adopt a highly polished process to reduce the contact friction between the fluid and the valve body and prevent the growth of bacteria and impurities.
● The stainless steel sanitary welded duckbill butterfly valve adopts a quick-disassembly structure design, allowing users to quickly disassemble and clean it.
Application
Stainless steel sanitary welded duckbill butterfly valve is widely used in the following industries, food and beverage industry: used for aseptic filling, CIP cleaning system, to ensure sanitation and safety. Pharmaceutical industry: suitable for purified water and liquid medicine delivery, in line with GMP standards. Bioengineering: used for fermentation and cell culture pipelines to prevent contamination. Dairy industry: milk and yogurt production lines, corrosion-resistant and easy to clean. Cosmetics industry: high-purity raw material transportation to avoid chemical residues. Semiconductor industry: ultrapure water system to meet dust-free and clean requirements.
Working Principles
The working principle of the stainless steel sanitary welded duckbill butterfly valve is to control the on-off or flow regulation of pipeline media by rotating the valve plate. The specific steps are as follows: When the valve is closed, the valve plate (butterfly plate) rotates 90° under the drive of the drive device (manual, pneumatic or electric), and fits tightly with the duckbill elastic valve seat to form a dead angle seal and block the flow of the medium; when the valve is opened, the valve plate rotates with the valve stem to a position parallel to the pipeline, allowing the medium to pass smoothly. Its specially designed duckbill valve seat can adaptively deform when under pressure to enhance sealing, which is especially suitable for fluid control with high cleanliness requirements.
Stainless steel sanitary welded duckbill butterfly valve options:
Drive mode: manual, pneumatic, electric
Seal material: EPDM, PTFE, silicone (FDA compliant)
Connection method: welding, quick-release, flange
Control method: switch type, regulating type
Surface treatment: polishing, sandblasting
Special customization: add positioner, anti-mixing function, etc.
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
● The stainless steel sanitary welded duckbill butterfly valve adopts a unique self-cleaning design. The contact surface of the valve plate and the valve seat is designed as a self-cleaning structure, which reduces the problem of fouling.
● The stainless steel sanitary welded duckbill butterfly valve adopts a low pressure difference design, which allows it to open stably under low flow and low pressure conditions.
● The special leak-proof structure of the stainless steel sanitary welded duckbill butterfly valve body and valve stem effectively reduces the risk of valve leakage under high pressure, and is suitable for occasions requiring high sealing and leak-proof properties.
● The stainless steel sanitary welded duckbill butterfly valve seat can be fine-tuned according to working conditions to optimize the sealing performance.
● The inner and outer surfaces of the stainless steel sanitary welded duckbill butterfly valve adopt a highly polished process to reduce the contact friction between the fluid and the valve body and prevent the growth of bacteria and impurities.
● The stainless steel sanitary welded duckbill butterfly valve adopts a quick-disassembly structure design, allowing users to quickly disassemble and clean it.
Application
Stainless steel sanitary welded duckbill butterfly valve is widely used in the following industries, food and beverage industry: used for aseptic filling, CIP cleaning system, to ensure sanitation and safety. Pharmaceutical industry: suitable for purified water and liquid medicine delivery, in line with GMP standards. Bioengineering: used for fermentation and cell culture pipelines to prevent contamination. Dairy industry: milk and yogurt production lines, corrosion-resistant and easy to clean. Cosmetics industry: high-purity raw material transportation to avoid chemical residues. Semiconductor industry: ultrapure water system to meet dust-free and clean requirements.
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