NIAGARA Butterfly Valve – Models FSDG50 & FSDG50G

High-performance semi-lugged ductile iron butterfly valve designed for durable service, compact installation, and superior corrosion resistance.

Technical Data
End Connections Sizes DN50 to DN300 are suitable for use with flanges conforming to BS EN 1092-2 PN10 or PN16 and ANSI B16.1 Class 125
Material: Ductile Iron
Pressure Rating: PN16
Size: Fig. 951: 50mm to 200mm, Fig. 951G: 50mm to 300mm
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Description

NIAGARA Butterfly Valve – Models FSDG50 & FSDG50G
The FSDG50 and FSDG50G are semi-lugged ductile iron butterfly valves built for long-lasting reliability and smooth operation in water, HVAC, and industrial applications.
Their semi-lugged body design allows compatibility with PN10, PN16, or Class 125 flanges, while the integrated notch plate provides a compact and efficient setup.
An anti-blowout stem ensures safe operation, and the fully bonded epoxy coating delivers outstanding protection against corrosion, ideal for C3 (medium) corrosion environments.

Technical Specifications:

  • Size:

    • Fig. 951: 50mm to 200mm

    • Fig. 951G: 50mm to 300mm

  • Pressure Rating: PN16

  • Material: Ductile Iron

  • End Connections:
    Sizes DN50 to DN300 are suitable for use with flanges conforming to BS EN 1092-2 PN10 or PN16 and ANSI B16.1 Class 125

Features:

  • Robust ductile iron valve body for long life service

  • Valve body semi-lugged to fit PN10, PN16, or Class 125 flanges

  • Integrated notch plate for a more compact design

  • The anti-blow out stem design provides a safe and secure operation

  • Fully bonded epoxy paint system for superior corrosion resistance

  • Suitable for applications where Level 3 C3 (Medium) corrosion protection is required

  • Maintenance free valve design, reducing downtime

Applications:
Ideal for water distribution, HVAC systems, industrial processing, and general flow control.

Additional information

Size:

Fig. 951: 50mm to 200mm, Fig. 951G: 50mm to 300mm

Pressure Rating:

PN16

End Connections

Sizes DN50 to DN300 are suitable for use with flanges conforming to BS EN 1092-2 PN10 or PN16 and ANSI B16.1 Class 125

Material:

Ductile Iron

Overview

NIAGARA Butterfly Valve – Models FSDG50 & FSDG50G
The FSDG50 and FSDG50G are semi-lugged ductile iron butterfly valves built for long-lasting reliability and smooth operation in water, HVAC, and industrial applications.
Their semi-lugged body design allows compatibility with PN10, PN16, or Class 125 flanges, while the integrated notch plate provides a compact and efficient setup.
An anti-blowout stem ensures safe operation, and the fully bonded epoxy coating delivers outstanding protection against corrosion, ideal for C3 (medium) corrosion environments.

Technical Specifications:

  • Size:

    • Fig. 951: 50mm to 200mm

    • Fig. 951G: 50mm to 300mm

  • Pressure Rating: PN16

  • Material: Ductile Iron

  • End Connections:
    Sizes DN50 to DN300 are suitable for use with flanges conforming to BS EN 1092-2 PN10 or PN16 and ANSI B16.1 Class 125

Features:

  • Robust ductile iron valve body for long life service

  • Valve body semi-lugged to fit PN10, PN16, or Class 125 flanges

  • Integrated notch plate for a more compact design

  • The anti-blow out stem design provides a safe and secure operation

  • Fully bonded epoxy paint system for superior corrosion resistance

  • Suitable for applications where Level 3 C3 (Medium) corrosion protection is required

  • Maintenance free valve design, reducing downtime

Applications:
Ideal for water distribution, HVAC systems, industrial processing, and general flow control.

Details

specifications
End Connections Sizes DN50 to DN300 are suitable for use with flanges conforming to BS EN 1092-2 PN10 or PN16 and ANSI B16.1 Class 125
Material: Ductile Iron
Pressure Rating: PN16
Size: Fig. 951: 50mm to 200mm, Fig. 951G: 50mm to 300mm

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