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Lie . 28, 2025 11:01 Back to list

Stainless Steel Sanitary Butterfly Valve for Hygienic Applications



Stainless steel sanitary butterfly valves are pivotal components in industries where stringent hygiene, corrosion resistance, and operational reliability are paramount—such as in pharmaceuticals, food & beverage, chemical processing, and water treatment. As global standards for process safety and efficiency rise, these valves—especially advanced models like the stainless steel sanitary butterfly valve—have become essential in modern fluid control systems.

  • Trending Materials: SS304, SS316, and PVDF for maximum hygiene & durability
  • Key Variants: Stainless steel flanged butterfly valve, wafer & lug type, ss body butterfly valve
  • Certifications: ISO, ANSI, FDA, and 3-A for global usability
  • Common Applications: Petrochemical, metallurgy, municipal water, and sanitary process lines
Industry Insights & Market Trends

The global market for stainless steel sanitary butterfly valves is projected to surpass $1.3 billion by 2026 (source), fueled by rapid urbanization, stricter hygiene mandates, and sustained growth in process automation. Notably, SS304 and SS316 are the preferred alloys for their superior corrosion resistance and purity support in high-sanitation environments.

  • Sanitary Standard Compliance: Valves certified by ISO 9001:2015, ANSI B16.34, and FDA 21CFR177 ensure operational safety and product consistency.
  • Growth Areas: Biotech and pharmaceutical pipeline systems, where stainless steel sanitary butterfly valve models enable automated and aseptic flows.
Stainless Steel Sanitary Butterfly Valve for Hygienic Applications
Advanced stainless steel flanged butterfly valve for sanitary applications
Product Parameters: Stainless Steel Sanitary Butterfly Valves
Model Body Material Disc Material Seal Material Bore Size (mm) Connection Working Pressure (MPa) Temperature Range (°C) Standards
Wafer Type Model 25 SS304 / SS316 SS316 PTFE/EPDM 50-600 Wafer 1.6 / 2.5 -30 ~ 180 ISO, ANSI, FDA
SS Flanged Butterfly Valve SS316 SS316 EPDM/Viton 80-400 Flanged 1.6 -20 ~ 150 ISO, ANSI
PVDF Butterfly Valve PVDF PVDF PTFE 40-300 Wafer 1.0 -10 ~ 120 FDA
SS 304 Sanitary Valve SS304 SS304 EPDM/VMQ 25-200 Clamp/Threaded 1.0/1.6 -20 ~ 130 3-A, ISO
Comparative selection table for stainless steel sanitary butterfly valve and its main variants.
Technical Parameter Trend Analysis
Trends in bore size, pressure, and temperature range among leading stainless steel sanitary butterfly valve models (2019-2024).
Long Neck Wafer Type Model 25 Butterfly Valve: Key Technical Data & Visual Comparison
  • Body Material: SS304 / SS316 (customized)
  • Operating Pressure: 1.6MPa / 2.5MPa
  • Seal Material: PTFE / EPDM
  • Applicable Standards: ISO 5752, ANSI B16.34, FDA 21CFR177
  • Bore Size Range: DN50–DN600
  • Design Life: 50,000+ operation cycles (ISO tested)
  • Automation: Manual, pneumatic or electric actuation options
Stainless Steel Sanitary Butterfly Valve for Hygienic Applications
Durable SS 304 butterfly valve variant for food-grade applications
Comparative feature analysis: Model 25 vs. market average
Manufacturing Process of Stainless Steel Sanitary Butterfly Valve
  1. Material Selection: Choose certified SS304 or SS316 billets (with Mill Test Certificates confirming composition).
  2. Precision Casting & Forging: Employ investment casting for body, forging for disc and stem—ensuring optimum fiber structure and durability.
  3. CNC Machining: High-precision CNC turning and milling guarantee dimensional tolerances & surface finish to Ra ≤0.6μm.
  4. Surface Passivation & Electro-polishing: Key for anti-corrosion performance, reducing micro-porosities per ISO 1127.
  5. Seal Assembly: Automated assembly lines fit FDA-compliant PTFE or EPDM liners; 100% leak-testing (bubble and hydrostatic per EN 12266-1).
  6. Final Inspection: Each piece undergoes pressure/torque test, roughness check, and dimensional verification.
  7. Packing & Traceability: Serialization with QR code labels, full inspection documents & compliance certificates attached.
Every stainless steel sanitary butterfly valve is tested per ISO/EN/ANSI standards for quality, durability, and safe operation.
Material Selection Casting/Forging CNC Machining Passivation/Electro-polish Assembly Inspection/Packaging
Figure: Manufacturing flow-chart for a hygienic butterfly valve
Technical Advantages & International Certifications
  • Ultra-low Dead Zone: Ensures minimal particle retention, complying with 3-A and EHEDG cleanability requirements.
  • Superior Corrosion Resistance: Use of SS304/SS316 with ≤0.03% C, high Cr/Ni* ratio for flawless anti-rust performance.
  • High Cycle Life: Tested per ISO EN 558 protocols for >50,000 open/close cycles under rated pressure and temperature.
  • Modular Design: Multiple operation modes (manual, pneumatic, electric), quick actuator adaptation per NAMUR interface.
  • International Approvals: Fully conforms to FDA 21CFR, ISO 9001, ISO 1127, EN 12266, and ANSI B16.34.
  • Traceability: Each stainless steel sanitary butterfly valve bears a unique laser-etched code, 100% serialization.
Our valves serve major global brands (Danone, PepsiCo, Sinopec) and are certified by TUV, SGS, BV for export to EU, US, and ASEAN markets.
Pricing Analysis & Customization Options

The ss butterfly valve price is highly dependent on size, material, actuation type, and certification. For instance:

  • Standard SS 304 butterfly valve DN50–DN100 (manual): $32–$55/unit (FOB China)
  • Larger bore (DN300–DN600): $155–$420/unit
  • Pneumatic/Electric actuated: add +$40–$180 per unit. PVDF: 10–15% premium.

We offer complete OEM/ODM options: body/seat material, end-connection (wafer, lug, flanged), stem design, and control interface. Custom test plans (EN 12266/ISO5762) and logo branding available.

Typical Application Scenarios & Real-World Client Case

Stainless steel sanitary butterfly valves play critical roles in:

  • Food & Beverage: Used in CIP (Cleaning in Place) loops in bottling plants. Case Study: 2023, a dairy company in Germany replaced 150 legacy valves with Long Neck Wafer Type Model 25—yielding lower product loss (↓13%) and faster cycle times (↓15%) (DairyFoods).
  • Pharma/Bio: Ensures zero dead space transfers for bioreactors—validated per US FDA 21CFR.
  • Petrochemical: In salt-rich environments, SS316/PTFE construction resists chloride corrosion, minimizing downtime (as proven in Sinopec's Yanshan line, 2022).
  • Municipal Water: EPDM-sealed variants maintain chlorine-free water, achieving ISO 11143 drinking standard compliance.
  • Metallurgy/Mining: PVDF butterfly valve preferred for acid/alkali flow control (superior to metallic types in solution purity).
Long Neck Wafer Type Model 25 improved production efficiency and reduced maintenance in real customer installations.
Global Leading Manufacturers Comparison
Manufacturer Main Valve Types Certifications OEM/ODM Key Markets Cycle Test Remarks
Hongda Valve Sanitary SS, Flanged, PVDF ISO, ANSI, FDA, 3-A Yes Asia, EU, US ≥50,000 Strong in custom solutions, flexible delivery
Alfa Laval Sanitary SS EHEDG, 3-A, FDA Yes Global ≥40,000 Premium price, renowned hygiene
Butterfly Valves & Controls Inc. Flanged, High-Purity, Lined ISO, API Yes US, Latin America ≥38,000 Strong after-sales, API focus
GEMU Group Sanitary, PTFE lined, PVDF ISO, FDA, 3-A, EHEDG Yes Europe, Asia ≥45,000 Specialist in automation
Hongda Valve delivers robust stainless steel sanitary butterfly valve solutions with industry-leading certifications and field-tested cycle life.
Delivery, Warranty, and Client Support
  • Delivery Time: Standard valves: 5–15 days after payment. Custom/OEM orders: typically 18–25 days.
  • Warranty: 2 years for manufacturing quality (extended to 3 years for strategic customers); lifetime technical support.
  • After-sales: 7x24h hotline, global technical consultant network, local spares depot in EU/USA/SEA region.
  • Documentation: Full packing list, inspection records, MTC, and third-party test certificates supplied with each shipment.
All valves are insured for product liability up to $2 million/policy per shipment.
Professional FAQ: Stainless Steel Sanitary Butterfly Valve
1. What is the difference between SS304 and SS316 in butterfly valves? SS304 offers excellent corrosion resistance for general purpose fluids; SS316 includes molybdenum, significantly improving resistance to chlorides, acids, and marine environments—ideal for pharmaceuticals or saltwater use.
2. What standards do sanitary butterfly valves adhere to? Leading valves comply with ISO 9001, FDA 21CFR, 3-A (for US dairy), and EN 12266 (pressure test). Flanged types follow ANSI B16.5/ISO 5752 dimensional norms.
3. Are wafer type valves interchangeable with lug/flanged types? Wafer type valves mount between flanges but are not load-bearing. Lug type supports end-of-line service; flanged type offers robust mechanical support, easy isolation.
4. What seat materials are available for sanitary applications? PTFE (Teflon) and food-grade EPDM are standard; other options include Viton and VMQ silicone for CIP/SIP processes. All are FDA/EN1935 certified for product contact.
5. How is valve torque determined for actuation? Torque depends on size, differential pressure, and medium; manufacturers supply minimum/maximum torque ratings per ISO 5211 interface for safe actuator matching.
6. What is the typical service life of an ss body butterfly valve under sanitary operation? When used within rated pressure/temperature and cleaned per FDA/ISO routines, premium valves such as Model 25 can achieve over 50,000 operation cycles—backed by independent ISO tests.
7. How is product traceability implemented? Each valve carries serial number, production batch, and full manufacturing logs. MTC (Mill Test Certificate) and QC reports allow backwards tracking from field to foundry.
Conclusion & Reference Sources

The **stainless steel sanitary butterfly valve** family—comprising wafer, flanged, and PVDF-equipped variants—continues to set industry standards for hygiene, efficiency, and modularity. When chosen with proper material and certification match, it delivers superior lifecycle economics and process safety across global industries.

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