A sanitary butterfly valve controls flow in your hygienic piping system by rotating a disc through 90 degrees — fully open to fully closed in a quarter turn. That mechanical simplicity is why the hygienic butterfly valve dominates food, dairy, beverage, and pharmaceutical processing lines: fewer moving parts mean fewer failure points, faster actuation, and easier cleaning compared to multi-turn valve designs.
Sanitary Butterfly Valves
A sanitary butterfly valve controls flow in your hygienic piping system by rotating a disc through 90 degrees — fully open to fully closed in a quarter turn. That mechanical simplicity is why the hygienic butterfly valve dominates food, dairy, beverage, and pharmaceutical processing lines: fewer moving parts mean fewer failure points, faster actuation, and easier cleaning compared to multi-turn valve designs.
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What Brings Buyers to Sanitary Butterfly Valves
Valve seat cracking or leaking after 3-6 months
Silicone seats degrade quickly in lines that run hot CIP followed by cold product. Thermal cycling causes micro-cracking at the disc edge, replacing seats every few months is a cost and downtime problem.
Solution: Specify EPDM for steam-CIP lines rated to 140C, FKM for high-temperature continuous service, PTFE where the media attacks rubber.Existing pneumatic valves fail open when air supply drops
A double-acting pneumatic butterfly valve stays in its last position if compressed air is lost, potentially leaving a line open during a shutdown or emergency.
Solution: Spring-return fail-safe closed actuator closes automatically on air failure. Specify when air loss represents a process or safety risk.Need to replace an existing valve without re-piping
Changing valve brands often means changing the ferrule or flange dimensions, forcing costly pipe modifications.
Solution: HEYI butterfly valves follow 3A/ISO 2852 tri-clamp dimensions and DIN/SMS standards, direct drop-in for any standard sanitary connection.Acid or solvent media is corroding the disc and seat
Standard EPDM and 316L stainless are not resistant to concentrated acids, chlorinated solvents, or aggressive chemical media, leading to early failure and product contamination.
Solution: Teflon-lined butterfly valve eliminates all metal-to-fluid contact with a full PTFE disc and body lining.All Sanitary Butterfly Valve Models
| Model | Connection | Actuation | Max Press. | Seal Options | Best For |
|---|---|---|---|---|---|
| Tri Clamp Butterfly Valve | Tri-Clamp 3A/ISO | Manual | 10 bar | EPDM / Silicone / PTFE / FKM | FoodDairyPharma |
| Pneumatic Actuated Butterfly Valve | Clamp / Weld / Thread | Pneumatic DA/SR | 10 bar | EPDM / Silicone / PTFE / FKM | AutomatedCIP/SIP |
| Electric Actuated Butterfly Valve | Clamp / Weld / Thread | Electric on/off or modulating | 10 bar | EPDM / Silicone / PTFE / FKM | SCADAModulating |
| Butt Weld Butterfly Valve | Butt Weld | Manual / Actuated | 10 bar | EPDM / Silicone / PTFE | Permanent piping |
| Teflon Lined Butterfly Valve | Tri-Clamp | Manual / Actuated | 10 bar | PTFE lined disc and seat | Corrosive mediaAcids |
| Powder Butterfly Valve | Clamp / Flange | Manual / Pneumatic | 10 bar | Silicone / PTFE powder-grade | Dry powderHopper |
| Sanitary Vacuum Butterfly Valve | Clamp / Weld | Manual / Actuated | Vacuum rated | EPDM / Silicone / FKM | VacuumFreeze-dry |
| Metering Butterfly Valve | Clamp / Thread | Manual graduated handle | 10 bar | EPDM / Silicone | Flow control |
All models: SS304 / SS316L / SS2205 duplex available. Standards: DIN, SMS, ISO, 3A, FDA compliant.
Where Sanitary Butterfly Valves Are Installed
| Brewing, Beverage and Dairy | Tank outlet isolation, CIP return lines, bright tank transfer, pasteuriser flow control. The most common valve in food and beverage processing worldwide, low torque, fast operation, compact. |
| Food Processing and Condiment | Sauce, edible oil, condiment, and syrup filling lines. Full-bore disc prevents viscous product hold-up. FDA-compliant EPDM and silicone seals. Widely used in Southeast Asian food export manufacturing. |
| Pharmaceutical and Biotech | WFI utility circuits, clean steam supply, CIP chemical distribution. SS316L body plus Ra 0.4 um electropolish on request. Pneumatic actuated butterfly valves in sterile filling room automation. |
| Water Treatment and Cleanroom | RO permeate, deionised water, ultrapure water distribution in semiconductor and lithium battery manufacturing. Increasingly specified for liquid cooling circuits in data centre infrastructure. |
Frequently Asked Questions
What is the difference between a sanitary butterfly valve and a standard industrial butterfly valve?
A sanitary butterfly valve uses polished interior surfaces (Ra 0.8 um), FDA-compliant elastomer seals, and crevice-free body geometry that permits complete CIP cleaning. A standard industrial butterfly valve has internal crevices and non-food-grade seals that disqualify it from hygienic applications. The HEYI range meets 3A, DIN, SMS, and ISO sanitary standards.
Pneumatic vs electric actuated butterfly valve - which should I choose?
Choose pneumatic for fast cycle times under 1 second, high frequency switching, or ATEX-rated environments where compressed air is available. Choose electric for modulating control, SCADA integration via 4-20 mA, or remote skid installations without air supply infrastructure.
What seal material should I specify - EPDM, Silicone, PTFE, or FKM?
EPDM suits water-based media and CIP chemicals up to 140C. Silicone is preferred for taste-sensitive beverages. PTFE is required for acids and solvents. FKM handles high temperatures where EPDM fails but PTFE flexibility is insufficient. Share your media and temperature range and we will confirm the correct seal grade.
Are HEYI butterfly valves CIP and SIP compatible?
Yes. Full-bore disc profile leaves no product-retention pockets. Seal materials are rated for standard CIP chemicals and SIP steam to 140C. Ra 0.4 um pharma-grade surface option available on request.
Why Buyers Order Direct From HEYI Factory
12Butterfly valve models
10 barMax pressure
DA + SRActuator options
SS316LStandard material
FDA Compliant 3A / DIN / SMS ATEX Available CE Actuators
HEYI (Hyflowtech) is an OEM manufacturer, not a trading company. Every unit is fabricated, tested, and shipped from our own facility. Factory audit visits welcome.
Get a Quote on Sanitary Butterfly Valves
Specify your pipe size, connection standard, actuation type, seal material, and quantity. Engineering reply within 24 hours.
SS316L available | FDA / 3A / DIN | Pneumatic and Electric | Custom OEM from 1 pc
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