Niagara Chain Operated Monitor

Niagara Chain Operated Monitor supplied by SA Fire Protection

The Niagara monitor is a chain operated monitor with single water way body. Very easy to operate, the Niagara monitor is capable of withstanding flows up to 20000 lpm (5200 gpm) and may be base flanged 3”, 4”, 6” or 8” UNI or ANSI. Movements on the vertical & horizontal plane can be performed by rotating the pulleys that transfer the operator force to the monitor joints. This technique is used to operate manually monitors that are installed on elevation above ground. Both vertical and horizontal positions are secured by the worm gear that prevent the monitor to move against any reaction force.

The joints are built in the monitor cast using a double channel system that host the rotational spheres. The “S” shaped body is designed to balance the reaction force and couple the monitor with several different discharge outlets such as water branch pipes, foam branch pipes and nozzles. The material of construction makes it suitable for being used with sea water or water foam solution within industrial harsh environments & offshore applications.

Technical characteristics

Body material to be selected among:
- Bronze EN 1982 – CC491K
- Marine Bronze EN 1982 – CC492K
- Nickel Aluminium Bronze EN 1982 – CC 333G
- Aluminium alloy G-AlSi9 (1)
Bronze joints installed on stainless steel AISI 316 balls, with greasers
Inlet flange ANSI or UNI casted CC333G or Aluminium alloy G-AlSi9
Internal diameter of the body 80 mm (3”) / 100 mm (4”) / 150 mm (6”)
Upwards, Downwards and rotational movement via pulleys and chains, the movements are blocked by the worm gear itself
Chains in galvanized carbon steel length 11 m (433 inch)
EPDM gaskets
Suitable execution for external installation in marine environment and operation with sea water and foam solutions
Vertical installation
Max working pressure 16 bar (232 psi)
Design pressure 16 bar (232 psi)
Test pressure 24 bar (348 psi)

Painting system standard SA: