Niagara Electro-Hydraulic Monitor

The model Niagara electro-hydraulic is a remote-controlled monitor with single water way body. The 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 are performed by hydraulic units that transfer oil through a hydraulic circuit to the monitor joints.

The joints are built in the monitor cast using a double channel system that host the rotational spheres. The Niagara Electro-hydraulic is available with 360° continuous rotation on the horizontal plane with 4 or 6 oil channels depending on the actuation selected for the nozzle/spreader. The monitor is equipped with a manual by-pass used to inhibit the remote control of the monitor.

The by-pass is manufactured with 4 channels that interconnects the hydraulic units with the actuators located on the monitor for the movements up/down and right/left. The same device is supplied with 6 channels when the monitor is to be coupled with an electro-hydraulic nozzle or spreader. 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 materials of construction make it suitable for being used with sea water or water foam solution within industrial harsh environments & offshore applications.

Technical characteristics

• Bronze body 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”)
• Horizontal movement driven by reduction gear hydraulic motor, with safety torque limiter and mechanical limit switches
• Horizontal plane continuous rotation
• Vertical movement driven by a reduction gear hydraulic motor with safety torque limiter and mechanical limit switches
• Movements velocity 8°/s (other factory settings available)
• Oil pressure 60 ± 10 bar
• Emergency manual controls for both movements, with disconnectable safety hand wheel (does not rotate during hydraulic operation)
• EPDM gaskets
• Support for Monitor (2) for electro-hydraulic units in:
  • ASTM A 106 Gr. B/ API 5 L Gr. B
  • SS AISI 304
  • SS AISI 316
  • Nickel Aluminium Bronze EN 1982 – CC 333G
• Flanged UNI, DIN or ANSI
• Suitable execution for external installation in marine environment and operation with sea water and foam solutions
• Vertical installation
• Max working pressure 16 bar (232 bar)
• Design pressure 16 bar (232 bar)
• Test pressure 24 bar (348 bar)

Painting system standard SA:

• Manual cleaning solvent
• Epoxy primer 60 μm
• Polyurethane intermediate 30 μm
• Polyurethane finish 30 μm
• Total thickness 120 μm dry film +/-10%
• Colour red RAL 3000

Version 360° continuous rotation with 4 channels: (MNEOC4)

• Horizontal movement driven by reduction gear hydraulic motor, with safety torque limiter and mechanical limit switches
• Continuous horizontal plane rotation 360°
• Rotational joint equipped with 4 internal channels to transfer the oil pressure to the monitor’s hydraulic actuators for the movements up/down and right/left
• The by-pass is manufactured with 4 channels to transfer the oil pressure to the rotational joint channels
• N° 2 electro-hydraulic units 400 V 3F 50 Hz – 0,75 Kw – IP 65 ATEX II 2G – Ex d II C T4 for rotational and vertical movements. Oil flow rate required for each unit 3.6 l/min.
• Emergency by-pass for manual control with 4 ways

Version 360° continuous rotation with 6 channels: (MNEOC6)

• Horizontal movement driven by reduction gear hydraulic motor, with safety torque limiter and mechanical limit switches
• Continuous horizontal plane rotation 360°
• Rotational joint equipped with 6 internal channels to transfer the oil pressure to the monitor’s hydraulic actuators for the movements up/down, right/left and nozzle/spreader jet/fog
• The by-pass is manufactured with 6 channels to transfer the oil pressure to the rotational joint channels
• N° 2 electro-hydraulic units 400 V 3F 50 Hz – 0,75 Kw – IP 65 ATEX II 2G – Ex d II C T4 for rotational and vertical movements. Oil flow rate required for each unit 3.6 l/min.
• N°1 electro-hydraulic units 400V 3F 50 Hz – 0,37 kW – IP65 ATEX II 2G – Ex d IIC T4 for nozzle movement. Oil flow rate required for each unit 1.6 l/min.
• Emergency by-pass for manual control with 6 ways

Accessories

1. Hydraulically operated nozzle
2. Hydraulically operated self-inducing nozzle
3. Water branch pipe
4. Foam branch pipe