NIAGARA Butterfly Valve – Models FB20G / FB21G / FSD30G / FSD31G / FS40G / FS41G

Description

NIAGARA Butterfly Valve – Models FB20G / FB21G / FSD30G / FSD31G / FS40G / FS41G
This valve series is designed as a universal pattern range suitable for use with both BS EN 1092-2 PN16 and ANSI B16.1 Class 125 flanges, ensuring global compatibility across systems.
Manufactured to BS EN 593 standards, these valves provide reliable flow control and long service life in water, HVAC, and industrial applications.
They feature a ductile iron body with disc options in stainless steel or aluminium bronze, and seat liner options in EPDM or Nitrile, allowing flexibility for different operating environments.
The 420 stainless steel shaft ensures maximum strength and resistance to torque and wear.
The model includes a gearbox-operated design, offering smoother operation for larger diameters.

Technical Specifications:

• Size: 50mm to 600mm

• 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 suitable for PN16 and ANSI 125 flanges

2. Rugged ductile iron body ensuring long service life

3. Optional discs: stainless steel or aluminium bronze

4. Seat liner available in EPDM or Nitrile

5. High-strength 420 stainless steel shaft

6. Smooth operation through integrated gearbox

7. Fully compliant with BS EN 593

8. Ideal for potable water, HVAC, and general industrial systems

Applications:
Perfect for water treatment, HVAC systems, industrial fluid handling, and general service flow control, where gearbox operation and dual-standard compatibility are required.