Sanitary vs Industrial Butterfly Valves
Sanitary Design Features
- Mirror-polished surfaces (Ra ≤ 0.8μm)
- No dead spaces or crevices
- Food-grade sealing materials (EPDM, silicone, PTFE)
- Easy disassembly for CIP/SIP cleaning
- Full material traceability (3.1 certificates)
Connection Options
- Tri-clamp / Tri-clover (most common)
- Weld end (ISO, DIN, SMS)
- Threaded (DIN 11851, SMS)
- Flanged (for larger sizes)
- Quick-connect configurations
Actuation Methods
- Manual handle with multi-position lock
- Pneumatic actuator (spring return/double acting)
- Electric actuator with position feedback
- Stainless steel actuators available
- Position indicators and limit switches
Technical Specifications
| Parameter | Range / Standard |
|---|---|
| Size Range | DN15 - DN300 (1/2" - 12") |
| Body Material | Stainless Steel 304 (1.4301), 316L (1.4404) |
| Disc Material | SS304, SS316L (mirror polished) |
| Seal Materials | EPDM, Silicone, PTFE, Viton (FDA compliant) |
| Surface Finish | Ra ≤ 0.8μm (inner surface); Ra ≤ 1.6μm (outer surface) |
| Pressure Rating | PN10 / PN16 (10 bar / 16 bar) |
| Temperature Range | -20°C to +135°C (EPDM); -20°C to +200°C (PTFE) |
| Connection Standards | 3A, DIN 11850, DIN 11851, SMS 3008, ISO 2852, BS 4825 |
| End Connections | Weld, Clamp, Thread, Flange |
| Actuation | Manual handle, Pneumatic, Electric |
| Certifications | FDA, 3A, EHEDG, CE, ISO 9001 |
Connection Types
Lianggu sanitary butterfly valves are available with multiple end connection configurations to suit different piping systems and installation requirements:
Weld Connection
Butt weld or socket weld ends for permanent, leak-free installation. Compliant with DIN 11850 and ISO standards.
Clamp / Tri-Clamp
Quick-disconnect clamp connections for easy disassembly and cleaning. Most popular for hygienic applications.
Threaded Connection
DIN 11851, SMS, or RJT threaded ends for systems requiring removable connections without welding.
Flange Connection
Single flange or flange-thread combinations for larger diameter applications and compatibility with existing flanged systems.
Three-Piece Design
Three-piece butterfly valve allows removal of the valve body from the pipeline without disturbing pipe connections.
Male Thread
External (male) threaded connections for direct installation into female-threaded fittings or equipment.
Industry Applications
- Food Processing: Dairy, juice, sauce, and edible oil production lines — Clamp and weld butterfly valves
- Brewery & Beverage: Beer, wine, soft drink production and filling — Stainless steel 316L with EPDM seals
- Pharmaceutical: API manufacturing, formulation, sterile processing — FDA/3A certified, full traceability
- Biotechnology: Fermentation, cell culture, protein purification — Electropolished surfaces, PTFE seals
- Dairy Industry: Milk collection, pasteurization, cheese making — CIP/SIP compatible designs
- Cosmetics: Cream, lotion, and personal care product manufacturing — Hygienic design for viscous media
- Water Treatment: RO systems, ultrafiltration, pure water distribution — Sanitary grade for pharmaceutical water
Why Choose Lianggu Sanitary Butterfly Valves?
Premium Materials
All valves manufactured from genuine stainless steel 304 and 316L with full material traceability certificates (3.1 / EN 10204).
Superior Surface Finish
Internal surfaces polished to Ra ≤ 0.8μm as standard. Electropolishing available upon request for enhanced corrosion resistance.
Multiple Standards Compliance
Compatible with 3A, DIN 11850/11851, SMS 3008, ISO 2852, and BS 4825 standards for global market compatibility.
Flexible Actuation Options
Manual, pneumatic (spring-return or double-acting), and electric actuators available. Stainless steel actuator housings for corrosive environments.
Custom Solutions
OEM/ODM services for special sizes, materials (duplex steel, titanium), and configurations. Custom packaging and labeling.
Quality Assurance
100% pressure testing, dimensional inspection, and surface roughness verification before shipment. ISO 9001 certified quality management.
Need a Sanitary Butterfly Valve Solution?
Our sanitary valve specialists can recommend the optimal valve type, seal material, and actuation method for your food, dairy, or pharmaceutical application. FDA and 3A certified products.
Email: info@chlgvalve.com Call: +86-15601794339