Sanitary 3-Piece Butterfly Valve

The Sanitary 3-Piece Butterfly Valve features a classic split three-piece structure, consisting of a central valve body, two connecting flanges or clamps on both sides, and internal valve disc, stem, and seals. Compared to integrated butterfly valves, its biggest advantage is complete disassembly. Maintenance and cleaning do not require disassembling the entire pipeline; simply loosening the clamps or bolts at both ends allows for thorough cleaning, disinfection, and replacement of vulnerable parts, significantly reducing downtime and maintenance costs.

Precision Manufacturing and Hygiene Standards

The Sanitary 3-Piece Butterfly Valve employs high-precision CNC machining technology, using premium SUS304 (1.4301) or SUS316L (1.4404) stainless steel, with machining tolerances controlled within ±0.01mm. Both inner and outer surfaces are mirror-polished, with an inner wall roughness of Ra≤0.4μm (precision can be increased as needed), eliminating sanitary dead corners. It meets GMP and EHEDG standards and supports CIP online cleaning and SIP high-temperature steam sterilization.

Superior Materials and Sealing Performance

1. Valve Body/Disc Material: SUS304 or SUS316L stainless steel, corrosion-resistant and durable.

2. Sealing Material: FDA-certified food-grade EPDM, silicone (SI), or PTFE, precision-machined for a perfect seal.

3. Sealing Rating: Class VI, bidirectional zero leakage, eliminating media leakage and cross-contamination.

4. Surface treatment: Electrolytic polishing or mechanical polishing, Ra≤0.8μm (up to Ra≤0.4μm), easy to clean and residue-free.

Technical Parameters and Customization Services

1. Nominal Diameter: DN10～DN150 (1/2"～6")

2. Nominal Pressure: PN10/16 (1.0/1.6MPa)

3. Operating Temperature: -30℃～+150℃ (depending on sealing material)

4. Operation Method: Manual multi-position handle (90° rotation for opening and closing, adjustable flow); optional pneumatic/electric actuator for automatic control

5. Connection Method: Clamp, flange, thread (customizable)

6. Standards: Compliant with 3A, DIN, SMS, ISO, IDF, GB/T 2238

Quality Assurance

As a trusted Sanitary 3-Piece Butterfly Valve manufacturer in China, DIYE VALVE strictly controls the entire production process: raw materials undergo spectral analysis upon arrival, and finished products undergo pressure testing, sealing testing, and cleanliness testing before leaving the warehouse to ensure stable and reliable product performance.

Customized Solutions

We offer customized services covering non-standard sizes, special polishing precision, and custom connection methods. Our engineering team will combine customer needs to provide personalized solutions that meet international standards.

Technical Parameters