Products Description
Need a reliable, hygienic butterfly valve with threaded connections for your sanitary piping system?
Guanjiang's Sanitary Threaded Butterfly Valve is a precision-engineered flow control device specifically designed for hygienic processing applications in food, beverage, pharmaceutical, and biotech industries. Featuring a threaded connection system (SMS, DIN, ISO, or NPT), it ensures secure, leak-proof installation while maintaining the highest sanitary standards. The quarter-turn disc-style closure provides rapid flow control — manufactured from 316L stainless steel with mirror-polished finishes (Ra ≤ 0.8 μm) and FDA-compliant EPDM, Silicone, or FKM seals.
Key Advantages
Superior Hygienic Performance
Mirror-polished surfaces (Ra ≤ 0.8 μm) prevent bacterial adhesion. Zero dead leg design eliminates product entrapment. CIP/SIP compatible for automated cleaning and sterilization.
Quarter-Turn Operation
Quarter-turn operation enables rapid opening and closing. Low torque requirement ensures smooth handle operation. Visual position indication for immediate status confirmation.
Bubble-Tight Sealing
Bubble-tight sealing prevents leakage and contamination. Precision-machined seat ensures consistent sealing performance. Resilient seals maintain integrity across temperature variations.
316L Stainless Steel
316L stainless steel construction withstands corrosive cleaning agents. Electropolished surfaces resist oxidation and chemical attack. Robust stem design ensures long-term reliability.
Easy Maintenance
Simple two-piece design allows quick disassembly. Easy seal replacement without special tools. Long service life reduces replacement frequency.
Threaded Connection Standards
SMS / DIN / ISO / NPT — compatible with existing threaded sanitary piping systems.
Size Range
1/2" to 6" (DN15 to DN150) — standard sanitary threaded connections.
Technical Specifications
| Parameter | Specification |
|---|---|
| Valve Body Material | 304 / 316L Stainless Steel |
| Disc Material | 316L Stainless Steel / PTFE Coated |
| Seat / Seal Material | EPDM / Silicone / FKM (Viton) — FDA compliant |
| Surface Finish | Mirror polished (Ra ≤ 0.8 μm) — inside and outside |
| Size Range | 1/2" ~ 6" (DN15 ~ DN150) |
| Thread Standards | SMS / DIN / ISO / NPT (BSPT / BSPP optional) |
| Operating Pressure | 0 ~ 1.0 MPa (10 bar / 145 PSI) |
| Operating Temperature | -20°C ~ 150°C (seat dependent) |
| Handle Options | Manual lever (standard) / Pneumatic actuator / Electric actuator |
| Standards Compliance | cGMP, FDA, 3-A, EHEDG |
Thread Standard Guide:
SMS (Svensk Maskin Standard): Most common for dairy and food processing — hygienic straight threads with O-ring seal.
DIN (Deutsches Institut für Normung): European standard — parallel threads with gasket seal.
ISO (International Organization for Standardization): International standard — compatible with SMS/DIN dimensions.
NPT (National Pipe Taper): Tapered thread (60° angle) — seals by thread deformation. Common in North America. BSPT/BSPP optional.
Always specify your thread standard when ordering — threads are not interchangeable between standards.
Applications
| Industry | Typical Applications |
|---|---|
| Pharmaceutical | Process piping, purified water (WFI) systems, CIP systems, utility lines |
| Food & Beverage | Product transfer lines, ingredient processing, filling systems, brewery lines |
| Dairy Processing | Milk and cream lines, yogurt processing, cheese production, CIP loops |
| Biotechnology | Fermentation systems, media preparation, buffer solutions, harvest lines |
| Cosmetics | Cream and lotion manufacturing, ingredient handling, filling systems |
Frequently Asked Questions
Q1: When should I choose a threaded butterfly valve over a clamp-type butterfly valve?
A: Threaded butterfly valves are ideal for permanent or semi-permanent installations where the piping system uses threaded connections. They offer lower initial cost than clamp-type valves and are more compact. Clamp-type (Tri-Clamp) valves are preferred when frequent disassembly is needed for cleaning or product changeovers. Choose threaded for fixed utility lines (water, CIP supply) and clamp-type for product contact lines requiring regular disassembly.
Q2: What thread standards are available?
A: We offer SMS (dairy standard), DIN (European), ISO (international), and NPT (North American tapered thread) connections. BSPT (British Standard Pipe Taper) and BSPP (British Standard Pipe Parallel) are also available. Specify your thread standard when ordering — threads are not interchangeable. The valve body is machined to match your piping system's thread specification.
Q3: How do you prevent leaks at the threaded connection?
A: For parallel threads (SMS, DIN, ISO), the seal is made by an integral O-ring or gasket — no thread sealant required. For tapered threads (NPT, BSPT), apply PTFE tape (2-3 wraps in thread direction) or liquid thread sealant. Do not over-tighten — follow torque specifications. All threaded butterfly valves are factory-tested for leak-free performance.
Q4: Can the valve be used for CIP and SIP processes?
A: Yes. The mirror-polished surfaces (Ra ≤ 0.8 μm) and zero dead leg design make it fully CIP (Clean-in-Place) and SIP (Steam-in-Place) compatible. The threaded connections are designed with hygienic principles — no exposed threads in the fluid path. Valve can withstand typical CIP chemicals and SIP steam temperatures (up to 150°C depending on seat material).
Q5: What documentation is provided for pharmaceutical applications?
A: For pharmaceutical applications, we provide mill certificates (EN 10204 3.1) with full material traceability, surface finish test reports (Ra measurements), seat material certificates (FDA compliance), and passivation certificates on request. Full cGMP documentation package available for validation-ready installations.
Need a sanitary threaded butterfly valve for your hygienic processing line?
Request a Quote → Download Datasheet (PDF)* Please provide your valve size (inches/mm), thread standard (SMS/DIN/ISO/NPT), seat material, and any FDA or cGMP requirements for a fast, accurate quotation.
