Description

TECHNICAL DATA SHEET

Full Lugged High Performance Butterfly Valve

Stainless Steel Material

1. GENERAL DESCRIPTION

The Full Lugged High Performance Butterfly Valve features a robust Stainless Steel body and disc construction, designed to provide bi-directional tight shut-off and reliable flow control in demanding industrial applications. The full lugged design allows for dead-end service (downstream pipe removal) and secure installation between flanges, eliminating the need for through-bolts and nuts. The valve is available in lever-operated, gear-operated, or bare stem configurations for actuator mounting.

Key Features:

Full lugged body suitable for end-of-line (dead-end) service at full pressure rating
Stainless Steel (CF8M / 316) body, disc, and stem for superior corrosion resistance
Blowout-proof stem design for enhanced operational safety
Bi-directional sealing (zero leakage per relevant standards)
ISO 5211 top mounting flange for direct actuator installation
High-performance PTFE / RPTFE seat with wide chemical compatibility
Maintenance-free design with extended service life
2. TECHNICAL SPECIFICATIONS

Parameter Specification
Valve Type High Performance Butterfly Valve (Double Offset Design)
Body Style Full Lug (Fully Lugged)
Nominal Size Range DN50 – DN600 (2″ – 24″); extended sizes available on request
Pressure Rating ANSI Class 150 / PN10 – PN25
Maximum Working Pressure 285 PSI (19.6 bar) at ambient temperature
Temperature Range -29°C to +230°C (-20°F to 482°F), seat-dependent
Shut-Off Classification Tight Shut-Off (Zero Leakage) per API 598 / EN 12266-1 Rate A
Flow Characteristic Approximate Equal Percentage
Face-to-Face Dimension EN 558 Series 20 / ISO 5752 Series 20 / API 609 Table 2
Flange Accommodation ASME/ANSI B16.5 Class 150; EN 1092 PN10/PN16
Top Flange ISO 5211 (for direct mounting of pneumatic, electric, or gear actuators)
Operation Lever (up to DN200); Gear Operator (DN200 and above); Bare Stem (on request)
3. MATERIALS OF CONSTRUCTION

No. Component Material Material Standard
1 Body Stainless Steel CF8M (316) ASTM A351
2 Disc Stainless Steel CF8M (316) ASTM A351
3 Stem (Shaft) Stainless Steel 316 (or 17-4PH) ASTM A276 / A564
4 Seat / Seal Ring Glass-Reinforced PTFE (RPTFE) – Standard —
(Optional) PTFE, UHMWPE —
5 Upper Bushing PTFE / Bronze —
6 Lower Bushing PTFE / Bronze —
7 O-Ring / Secondary Seal FKM (Viton) or NBR —
8 Stem Packing PTFE / Graphite —
9 Taper Pin (Disc-Stem) Stainless Steel —
10 Handle / Lever Stainless Steel or Malleable Iron with Epoxy Coating —
11 Gear Operator Housing Cast Iron / Ductile Iron (for gear-operated models) —
(Materials may be customized based on service media requirements.)

4. APPLICABLE STANDARDS & CERTIFICATIONS

Category Standard
Design & Manufacture API 609, MSS SP-68, ASME B16.34, EN 593
Face-to-Face EN 558 Series 20, ISO 5752 Series 20, API 609
Flange Dimensions ASME/ANSI B16.5 (Class 150), EN 1092-1 (PN10/PN16)
Pressure-Temperature Rating ASME B16.34
Inspection & Testing API 598, EN 12266-1 (Rate A – Tight Shut-Off)
Top Flange (Actuator Mounting) ISO 5211
Marking MSS SP-25
Fire-Safe (Optional) API 607 / ISO 10497
SIL Capability (Optional) IEC 61508 (SIL 2 / SIL 3)
Pressure Equipment Directive 2014/68/EU (PED)
5. PERFORMANCE DATA

Nominal Size Cv (Kv) Value (Fully Open, Approx.) Breakaway Torque (Dry, Approx.)
DN50 (2″) 98 18 N·m
DN65 (2½”) 160 25 N·m
DN80 (3″) 247 35 N·m
DN100 (4″) 420 50 N·m
DN125 (5″) 700 80 N·m
DN150 (6″) 1,050 120 N·m
DN200 (8″) 1,900 220 N·m
DN250 (10″) 3,100 370 N·m
DN300 (12″) 4,600 550 N·m
*(Cv/Kv values are indicative and measured with water at 5°C – 30°C. Torque values are breakaway torques with dry media; actual values may vary with pressure, medium, and temperature.)*

6. PRESSURE-TEMPERATURE RATING (Class 150, RPTFE Seat)

Temperature Maximum Working Pressure
-29°C to +38°C (-20°F to +100°F) 285 PSI (19.6 bar)
+50°C (+122°F) 275 PSI (19.0 bar)
+100°C (+212°F) 240 PSI (16.5 bar)
+150°C (+302°F) 210 PSI (14.5 bar)
+200°C (+392°F) 185 PSI (12.8 bar)
+230°C (+482°F) 150 PSI (10.3 bar)
*(Pressure-temperature ratings conform to ASME B16.34. For steam service above 150 PSI, consult factory.)*

7. DIMENSIONAL DATA (Lug Type, Class 150)

Nominal Size A (Face-to-Face, mm) B (Valve Height – Open, mm) C (Lever Length, mm) ISO 5211 Top Flange Approx. Weight (kg)
DN50 (2″) 43 246 210 F05 3.6
DN65 (2½”) 46 260 210 F05 4.5
DN80 (3″) 46 275 210 F05 5.5
DN100 (4″) 52 310 280 F07 8.0
DN125 (5″) 56 335 280 F07 10.5
DN150 (6″) 56 360 280 F07 13.0
DN200 (8″) 60 420 Gear Operated F10 22.0
DN250 (10″) 68 500 Gear Operated F10 35.0
DN300 (12″) 78 570 Gear Operated F14 52.0
(Full dimensional details including flange drilling (PCD, N-M) and gearbox dimensions available in the detailed engineering datasheet.)

8. APPLICATIONS

Chemical and Petrochemical Processing
Oil & Gas (upstream and midstream)
Heating, Ventilation, and Air Conditioning (HVAC)
Water and Wastewater Treatment
Power Generation (cooling water and auxiliary systems)
Marine and Shipbuilding
Food and Beverage Processing
Pharmaceutical and Clean Utility Systems
Compressed Air and Gas Systems
9. OPTIONS & ACCESSORIES

Seat Materials: Virgin PTFE, UHMWPE, Metal-Seated (for high-temperature / abrasive service)
Body/Disc Materials: CF8M (316), CF8 (304), Duplex Stainless Steel, Alloy 20, Hastelloy
Elastomer Seals: EPDM, NBR, FKM (Viton), FFKM (e.g., Kalrez / Chemraz)
Actuation: Bare Stem with ISO 5211 top flange; Manual Gear Operator; Pneumatic Actuator (single-acting / double-acting); Electric Actuator (on-off / modulating)
Accessories: Limit Switch Box, Solenoid Valve, Positioner, Manual Override, Chain Wheel Operator
Special Coatings: Electropolished finish (for hygienic applications), Epoxy coating (for buried / aggressive environments)
Fire-Safe Certification: API 607 / ISO 10497
SIL Certification: IEC 61508 SIL 2 / SIL 3
NACE Compliance: NACE MR0175 / MR0103 (sour service)
Bare Stem Configuration: For direct actuator mounting
10. ORDERING INFORMATION

To specify or order, please provide the following information:

Valve Type: Full Lug High Performance Butterfly Valve
Body Material: [e.g., CF8M / 316 SS]
Size: [e.g., DN100 / 4″]
Pressure Class: [e.g., Class 150 / PN16]
Seat Material: [e.g., RPTFE / PTFE / UHMWPE]
Operation: [Lever / Gear / Bare Stem / Actuated]
End Connection Standard: [ASME B16.5 Class 150 / EN 1092 PN16]
Service Medium & Temperature: [e.g., Acetic Acid, +80°C]
Optional Requirements: [Fire-Safe / NACE / SIL / Special Coatings, etc.]
Example Order Description:

Full Lug High Performance Butterfly Valve, Body CF8M (316 SS), Disc CF8M, Stem 316, RPTFE Seat, DN150 (6″), Class 150, Lever Operated, ISO 5211 Top Flange, Fire-Safe per API 607.
DISCLAIMER:
The information contained in this Technical Data Sheet is for general reference purposes only. Specifications, dimensions, and performance data are subject to change without notice. For critical applications, please contact the manufacturer or supplier for certified engineering documentation and material test certificates (e.g., EN 10204 Type 3.1 / 3.2). The user is responsible for verifying the suitability of the valve for the intended service conditions.