NIAGARA Butterfly Valve – Models FB20 / FB21 / FSD30 / FSD31 / FS40 / FS41

Description

NIAGARA Butterfly Valve – Models FB20 / FB21 / FSD30 / FSD31 / FS40 / FS41
These models are designed as universal pattern butterfly valves suitable for installation with both BS EN 1092-2 PN16 and ANSI B16.1 Class 125 flanges.
Manufactured in compliance with BS EN 593, they provide high durability, flexibility, and superior sealing performance.
The valves are available with ductile iron, stainless steel, or aluminium bronze discs, as well as EPDM or Nitrile seat liners, making them ideal for various industrial and water system applications.
The 420 stainless steel shaft ensures enhanced mechanical strength and extended service life.

Technical Specifications:

• Size: 50mm to 200mm

• Pressure Rating: PN16 / ANSI 125

• Material: Ductile Iron

• End Connections: Compatible with BS EN 1092-2 PN16 and ANSI B16.1 Class 125 flanges

Features:

1. Universal pattern design for compatibility with PN16 and ANSI 125 flanges

2. Valve body made of durable ductile iron

3. Choice of disc materials for different applications (iron, stainless, or bronze)

4. Flexible seat liner options (EPDM or Nitrile) for various media

5. 420 stainless steel shaft for superior torque resistance and longevity

6. Designed in accordance with BS EN 593 standards

7. Low-maintenance, corrosion-resistant structure

Applications:
Ideal for HVAC systems, water distribution, industrial processing, and general-purpose flow control where dual-standard compatibility (PN16 / ANSI 125) is required.