The butterfly valve 2.5 inch and its size derivatives—including butterfly valve 2 1 2 inch, butterfly valve 1.5 inch, butterfly valve 1 1 2 inch, 1.5 tri clamp butterfly valve, 1.5 butterfly valve—are essential components in precision fluid control across multiple industries. With the increasing demand for efficient, durable, and cost-effective valve solutions, the Long Neck Lug Type Model 30 Butterfly Valve has emerged as a top choice, combining advanced manufacturing, stringent quality standards (such as ISO and ANSI), and versatile applications from petrochemicals to water treatment.
Industry Trends: The Evolving Market of Butterfly Valves
- Global market size for butterfly valves was valued at USD 10.5 Billion (2023) and is projected to grow at a CAGR of 5.9% (2024–2029). (Source: MarketsandMarkets)
- Stainless steel and epoxy-coated ductile iron dominate material preferences due to excellent corrosion resistance.
- Compact and Lug Type configurations such as Long Neck Lug have gained popularity for high pressure and quick maintenance needs.
- Automation (electric/pneumatic actuators) integration is rising for Industry 4.0–ready process control systems.
- Sanitary applications such as tri-clamp butterfly valves (1.5 tri clamp butterfly valve) are increasingly vital in food, pharma, and biotech sectors.
- Compliance with international standards such as ISO 9001, ANSI, API, and FDA has become mandatory for global supply contracts.
Technical Parameter Table: Butterfly Valve 2.5 Inch vs Other Standard Sizes
Parameter | Butterfly Valve 2.5 Inch | Butterfly Valve 2 1 2 Inch | Butterfly Valve 1.5 Inch | Butterfly Valve 1 1 2 Inch | 1.5 Tri Clamp Butterfly Valve | 1.5 Butterfly Valve |
---|---|---|---|---|---|---|
Nominal Diameter | 2.5" (DN65) | 2.5" (DN65) | 1.5" (DN40) | 1.5" (DN40) | 1.5" (DN40) | 1.5" (DN40) |
Pressure Rating | PN16/ANSI 150 | PN16/ANSI 150 | PN16 | PN16 | PN16 | PN16 |
Temperature Range | -20°C to +120°C | -20°C to +120°C | -20°C to +110°C | -20°C to +110°C | -20°C to +110°C | -20°C to +110°C |
Body Material | WCB/CF8M/Ductile Iron | WCB/CF8M/Ductile Iron | CF8M/304SS | CF8M/304SS | 316SS | 304SS/316SS |
Disc Material | SS316/SS304 | SS316/SS304 | SS316 | SS316 | SS316 | SS304/SS316 |
Seat Material | EPDM/PTFE/NBR | EPDM/PTFE/NBR | EPDM/PTFE/Silicone | EPDM/PTFE/Silicone | EPDM/PTFE | EPDM/PTFE |
Connection | Lug Type/Flanged | Lug Type/Flanged | Tri-Clamp, Wafer | Tri-Clamp, Wafer | Tri-Clamp | Wafer |
Applicable Industry | Petrochemical, Water, HVAC | Petrochemical, Water, HVAC | Pharma, Beverage, Food | Pharma, Beverage, Food | Sanitary Processing | General Services |

Manufacturing Process Breakdown: Butterfly Valve 2.5 Inch
Certified SS316/WCB
Lost Wax | Sand Casting | Drop Forging
Normalization;
Stress Relieving
High-precision Lathe, Milling
Anti-corrosive Coating/Electropolishing
100% ISO/ANSI Tests: Pressure, Leakage, Torque, Cycle
Each butterfly valve 2.5 inch unit undergoes rigorous material traceability checks, CNC tolerance inspection (±0.01mm), hydraulic testing under 1.5x full-rated pressure (EN 12266), torque and anti-blowout stem validation, and certified packing for international supply. This end-to-end process ensures exceptional product life (tested for >50,000 cycles) and trusted operation in demanding settings.
Featured Product: Long Neck Lug Type Model 30 Butterfly Valve
Visit Product Page- Design: Long Neck, Lug Type, Full-Bore, Bidirectional Shut-Off
- Size Range: DN50 (2 inch) - DN300 (12 inch), focus: 2.5 inch (DN65)
- Body/Disc Materials: Ductile Iron, WCB, CF8 (304SS), CF8M (316SS)
- Seat: EPDM, NBR, PTFE, VITON, FKM (FDA-compliant options)
- Bearing/Stem: High-strength alloy, Anti-blowout design
- Working Pressure: PN16/150LB (others optional)
- Testing Standard: EN12266, MSS-SP-67, API609, ISO 9001
- End Connection: Lug (ANSI/ISO/DIN compatible)
- Temperature Range: -20°C to +120°C
- Actuation: Lever, Gear, Pneumatic, Electric
- Coating: FBE Epoxy or Custom Surface
- Certifications: CE, ISO, WRAS, FDA (seat options)
Key Technical Performance Visualization

Technical Advantages and Compliance Overview
- Cycle Life: Exceeds 50,000 full cycles (test data: retention >85% at 50k cycles; see line chart)
- Pressure Resistance: Model 30 tested at 17 Bar (vs. 11–15 Bar industry average); zero leakage per EN12266
- Corrosion Protection: FBE Epoxy coating or full SS316/304 construction as per application and ISO 12944
- Sealing Technology: Molded EPDM/PTFE seat, triple offset disc option, FDA food-grade on request
- Tight Installation Tolerances: CNC Cellular Machining for low torque, smooth actuation (avg. shaft wobble ≤ 0.03mm)
- Compliance: Follows ISO 9001, EN 593, API 609, MSS-SP-67; FDA & WRAS for sanitary lines
- Traceability & Inspection: Every batch laser-marked and traceable to raw material certificates
- Smart Integration: Direct-mount pad for ISO 5211 actuators (electric/pneumatic)
- Longevity: Laboratory and field data: avg. service >12 years in water, >8 years in saline/chemical environments
Manufacturer Comparison: Model 30 vs Global Leading Brands
Feature / Brand | Model 30 Long Neck Lug | Kitz (Japan) | Bray (US) | ABZ (US) | Johnson Controls |
---|---|---|---|---|---|
Cycle Test (EN12266) | 50,000+ | 32,000 | 45,000 | 39,000 | 48,000 |
Corrosion Coating | Epoxy/Full SS | Epoxy | Epoxy/Fusion | Epoxy | Electrocoat |
Seat Type | EPDM/PTFE | EPDM | PTFE/EPDM | EPDM | NBR |
Certifications | ISO, FDA, WRAS | JIS, ISO | UL, FM, ISO | ISO | UL, ISO |
Pressure Rating (Bar) | 17 | 15 | 16 | 15 | 16 |
ISO 5211 Mount | Yes | Optional | Yes | Yes | Optional |
Sanitary Compliance (FDA) | Yes (opt.) | Limited | Yes (opt.) | No | No |
Tailored Solutions: Customization Options
- Custom actuator mounting: Electric, pneumatic, gear or lever all supported
- Material selection: Full SS316, duplex 2205, Hastelloy for corrosive service
- Coating customizations: WRAS/FDA certified for potable/food lines, marine-grade
- Connection compatibility: Lug, wafer, tri-clamp, ANSI/DIN/ISO flanges
- Optional accessories: Limit switch, positioner feedback, epoxy color matching
- Extreme temperature/pressure specs on request (-45°C, 25Bar pressure)
Application Case Studies: Butterfly Valve 2.5 Inch in the Field
Petrochemical Industry: High-Pressure Steam Line
In a leading Middle East refinery upgrade (2023), more than 160 sets of Long Neck Lug Type Model 30 valves (2.5" and 3") replaced conventional wafer type valves in critical steam distribution. Lab data and plant SCADA logs show a 13% reduction in leak incidents and an average valve maintenance interval extended by 36 months.
Water Treatment — Municipal Supply
A European utility installed 2.5" Model 30 valves for feedwater and backwash zones. Real-time pressure testing showed zero seat leakage after 3 years (tested under 14 Bar daily cycles), outperforming local standard valves. Operators cited easier maintenance due to the long-neck design and positive shutoff.
Food Processing / Brewery: Clean-In-Place (CIP)
When a US craft brewery transitioned to 1.5 tri clamp butterfly valves and Model 30 (2.5") for its new sterile process line, qualification runs validated less than 0.03% product hold-up, perfect weldless sanitation, and swift seat replacement versus previous models. Operator survey gave a 4.8/5 rating on reliability.
FAQ: Technical Terms & Application Insights
Delivery, Lead Time & Support Services
- Standard lead time: 7–20 days (depending on QTY & configuration); samples in 5 days
- Support: Online & on-site technical support, documentation (CAD, 2D, 3D, certificates)
- Warranty: 2 years with documented claims process; extended service agreement optional
- Customer References: Available upon request; hundreds of global installations
- Aftermarket Care: Fast spare parts, valve retrofits, actuator upgrades
For more about the full range of precision sanitary or industrial butterfly valves, visit our product resource: Long Neck Lug Type Model 30 Butterfly Valve.
References & Further Reading
- MarketsandMarkets. (2024). "Butterfly Valves Market Size, Share & Trends" – Link
- Valve World Magazine – "Trends in Butterfly Valve Technologies" – valve-world.net
- Forum: Valve Engineering – Field issues & maintenance eng-tips.com/threadminder.cfm?pid=341
- "Butterfly Valves: Standards and Selection" – ISA Journal, Vol. 51(2), 2023
- FDA. "Standards for Sanitary Valves" – FDA Food Code
- International Water Association: Valve Asset Management Casebook, 2022