NiAlBr Nickel Aluminium Bronze Butterfly Valve Flanged Class 150
Butterfly Valves

NiAlBr Butterfly Valve - Flanged Class 150

Nickel Aluminium Bronze (NiAlBr) Butterfly Valve with Flat Face Flanged connections, Class 150# rating. Quarter-turn operation with resilient seated design for tight shut-off. Ideal for highly corrosive applications including Sodium Hypochlorite, Seawater, and dilute Hydrochloric Acid (HCl 5%). Available in wafer and lug configurations.

Process Fluids

Sodium Hypochlorite Seawater HCl 5% Chlorinated Water

Available Sizes: 2", 3", 4", 6", 8", 10", 12"

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Technical Specifications

Valve Type

Resilient Seated Butterfly Valve

Operation

Manual (Lever / Gearbox)

End Connection

Flanged (Flat Face) - Wafer/Lug

Pressure Rating

Class 150# (PN16/PN20)

Design Temperature

60°C (140°F) Max

Design Standard

API 609 / BS EN 593

Materials of Construction (MOC)

Component Material Specification
Body Nickel Aluminium Bronze ASTM B148 C95800 / UNS C95800
Disc Nickel Aluminium Bronze ASTM B148 C95800 / UNS C95800
Stem Monel 400 / NiAlBr ASTM B164 / B148 C95800
Seat / Liner EPDM / NBR / FKM Chemical Resistant Grade
Stem Seal EPDM O-Ring Double O-Ring Design
Bushings PTFE / Bronze Self-Lubricating
Bolting Stainless Steel ASTM A193 B8M / A194 8M
Operator Lever / Worm Gearbox Ductile Iron / Aluminium

Note: All wetted parts are suitable for process fluids (Sodium Hypochlorite, Seawater, HCl 5%)

Dimension Table - Class 150# Flanged (ASME B16.5 / API 609)

Size (inch) DN (mm) L (mm) D (mm) D1 (mm) n × d H1 Lever (mm) H2 Gear (mm) Weight (kg)
2" 50 43 152 92 4 × 19 180 - 4.5
3" 80 46 190 127 4 × 19 210 - 7.5
4" 100 52 229 157 8 × 19 240 - 12
6" 150 56 279 216 8 × 22 280 310 22
8" 200 60 343 270 8 × 22 - 350 38
10" 250 68 406 324 12 × 25 - 395 58
12" 300 78 483 381 12 × 25 - 450 85

Legend: L = Face-to-Face (Wafer) | D = Flange OD | D1 = Bore Diameter | n × d = Bolt Holes | H1 = Height with Lever | H2 = Height with Gearbox

Features & Benefits

Superior Corrosion Resistance

NiAlBr provides exceptional resistance to seawater, chlorides, and acidic environments, outperforming stainless steel in marine applications.

Quarter-Turn Operation

90° rotation from fully open to fully closed provides quick and easy operation with minimal operator effort.

Compact & Lightweight

Wafer design requires minimal installation space and reduces overall system weight compared to other valve types.

Complete Traceability

Full material traceability with Mill Test Certificates (MTCs) and compliance documentation as per international standards.

Test Pressure Requirements

Test Type Pressure (Class 150) Standard
Hydrostatic Shell Test 450 PSI (31 bar) API 598
Hydrostatic Seat Test 200 PSI (14 bar) API 598
Pneumatic Low Pressure Test 80 PSI (5.5 bar) API 598

Standards Compliance

API 609

Butterfly Valves

API 598

Valve Testing

BS EN 593

Butterfly Valves

ASME B16.5

Flange Dimensions

MSS SP-67

Butterfly Valves

ASTM B148

NiAlBr Material

Typical Applications

Marine & Offshore

Seawater cooling, ballast systems

Desalination Plants

Seawater intake, brine discharge

Chemical Processing

Sodium hypochlorite, chlorine

Water Treatment

Chlorination, large diameter lines

Technical Notes

  • All dimensions are in millimeters unless otherwise specified
  • Tolerance: ±3mm for standard dimensions
  • Complete material traceability provided with Mill Test Certificates (MTCs)
  • Valves tested as per API 598 and customer specifications
  • All wetted parts are suitable for process fluids
  • Lever operation for sizes up to 6", gearbox for larger sizes
  • Pneumatic and electric actuators available on request
  • Wafer and Lug type configurations available

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