Butterfly valves give you quarter-turn isolation and throttling in a compact, lightweight body — the practical choice where a gate valve would be too heavy, too tall or too slow to operate. A single disc rotates 90° within the pipe bore, so face-to-face length stays short and actuation is fast.
The Niagara butterfly valve range
Our range covers the FFB20 / FFB21, FFSD25 / FFSD30 / FFSD80 / FFSD81 / FFSD150, FSD30 / FSDG50 and FFS40 / FFS41 / FFS80 series, in wafer, lug and flanged configurations, with gear-operated and lever-operated options.
Where they are used
Water treatment and distribution, HVAC chilled and condenser water, fire protection loops, irrigation headers, and general industrial process lines — anywhere frequent isolation or flow regulation is required.
Selecting a butterfly valve
Specify by nominal size (DN), body style, pressure rating, seat and disc material for your medium, and whether you need manual, gear or actuated operation. Our engineering team can confirm the right configuration for your duty.
NIAGARA Butterfly Valve – Model FFSD150
High-performance fully-lugged ductile iron butterfly valve, designed to meet Class 150 standards for robust and reliable flow control.
NIAGARA Butterfly Valve – Model FFSD5DRG
Fully-lugged ductile iron butterfly valve with double regulating feature, designed for precise flow control and isolation in PN16 flange systems.
NIAGARA Butterfly Valve – Models FB20 / FB21 / FSD30 / FSD31 / FS40 / FS41
Universal pattern butterfly valve compatible with both PN16 and ANSI 125 flanges, offering multiple disc and seat liner material options for diverse industrial applications.
NIAGARA Butterfly Valve – Models FB20G / FB21G / FSD30G / FSD31G / FS40G / FS41G
Universal pattern butterfly valve with gearbox operation, designed for compatibility with PN16 and ANSI 125 flanges, offering durable construction and flexible disc and seat options.
NIAGARA Butterfly Valve – Models FFB20 / FFB21 / FFSD30 / FFSD31 / FFS40 / FFS41
Flanged butterfly valve made of ductile iron, designed to meet BS EN 593 standards, offering reliable flow control with multiple disc and seat liner options.
NIAGARA Butterfly Valve – Models FFB20A / FFB21A / FFSD30A / FFSD31A / FFS40A / FFS41A
Wafer-type butterfly valve designed to meet ANSI Class 125 standards, featuring a ductile iron body with multiple disc and seat liner options for versatile industrial use.
NIAGARA Butterfly Valve – Models FFB20G / FFB21G / FFSD30G / FFSD31G / FFS40G / FFS41G
Heavy-duty gear-operated butterfly valve made of ductile iron, suitable for PN16 flanged systems, ensuring durability, corrosion resistance, and precise control.
NIAGARA Butterfly Valve – Models FFB20GA / FFB21GA / FFSD30GA / FFSD31GA / FFS40GA / FFS41GA
Heavy-duty butterfly valve with gear operation, ductile iron body, and stainless steel shaft, designed for ANSI Class 125 systems.
NIAGARA Butterfly Valve – Models FFS1150G / 5FFS2150G & FFS150BS
Heavy-duty flanged butterfly valve with ductile iron body and stainless steel disc, designed to ANSI Class 150 standards for high-performance large-diameter flow control.
NIAGARA Butterfly Valve – Models FFS116G / 5FFS216G & FFS10BS
Large-diameter flanged butterfly valve with ductile iron body and stainless steel disc, designed for efficient operation and compliance with international standards.
NIAGARA Butterfly Valve – Models FFS80 & FFS80G
Durable wafer-type ductile iron butterfly valve designed for long service life, compact installation, and excellent corrosion resistance under medium-duty applications.
NIAGARA Butterfly Valve – Models FFS80W & FFS80GW
WRAS-approved wafer-type ductile iron butterfly valve for potable water applications, designed for durability, corrosion resistance, and low-maintenance operation.
