Seawater circuit
Intakes, filters, valves, and fittings
The seawater circuit transfers the heat absorbed by the air conditioner to the outside. To function correctly, it must ensure a continuous flow, limit pressure losses, prevent debris from entering, and allow for inspection and maintenance of the components.
Blue-Airco offers the components needed to create the complete path from the sea intake to the discharge: intakes, ball valves, filters, elbows, reducers, hose fittings, and seacocks, available in multiple sizes and selected for marine use.
The correct combination of diameters and components must be defined based on the unit, the pump, the length of the pipes, and the system's height difference.
PRICE — ON REQUEST
The seawater circuit components are ideal for…
Self-contained air conditioning systems at 12V, 24V, and 48V DC, either with a pump dedicated to a single unit or with circuits shared among multiple air conditioners.
The range is suitable for new constructions and refits, when it is necessary to create, expand, or replace the seawater cooling circuit.
Related solution
Efficient Flow
In systems with multiple units, Efficient Flow regulates the distribution of seawater based on the units that are actually active, avoiding supplying all condensers in the same way when it is not necessary.
Range advantages
A complete path
Coordinated components for intake, interception, filtration, connection to the pump, condenser supply, and overboard discharge.
Corrosion-resistant materials
Sockets, valves, and fittings are available in CR brass; ball valves use a stainless steel handle.
Full-pass valves
They allow intercepting the circuit while maintaining an internal section suitable for the water flow.
Inspectable filtration
Seawater filters are available in multiple diameters, with marine-grade polypropylene body and 12 mesh screen; for some sizes, a transparent polycarbonate lid is available.
More diameters for different systems
The range includes components from 1/2″ up to 1 1/2″, depending on the type.
Simplified maintenance
The correct arrangement of valve and filter allows isolating and controlling the circuit without intervening on the entire system.
Sizing support
Blue-Airco can specify compatible diameters, pump, and lengths with the expected configuration.
Available components
| Product family | Available sizes |
|---|---|
| Brass through-hull fitting CR | 1/2″, 3/4″, 1″, 1 1/4″, 1 1/2″ |
| F.F. ball valves with full passage | 1/2″, 3/4″, 1″ |
| Seawater filters in corrosion-resistant materials, with marine-grade polypropylene body | 1/2″, 3/4″, 1″, 1 1/4″, 1 1/2″ |
| Optional transparent polycarbonate covers | for 1/2″, 3/4″–1″ and 1 1/4″ filters |
| 90° M.F. elbows in CR brass | 1/2″, 3/4″, 1″ |
| Reduction M.F. in CR brass | 3/4″ male × 1/2″ female |
| Female hose fittings | 1/2″ × 18 mm, 3/4″ × 20 mm, 1″ × 25 mm |
| Heavy duty male hose fittings | 1/2″ × 18 mm, 3/4″ × 18/20 mm, 1″ × 25 mm |
| Through-hull discharges in CR brass | 1/2″, 3/4″, 1″ |
How the circuit is configured
Sea intake
The intake must be sized for the required flow rate and fitted with a shut-off valve that can stop the water flow.
Seawater filter
It retains debris and impurities before the water reaches the pump and must remain readily accessible for inspection and cleaning.
Circulation pump
The seawater pump is selected according to the circuit's required flow rate and head, as well as the available supply voltage.
Air-conditioner condenser
It must receive the water flow required for heat exchange through piping of suitable diameter and length.
Overboard discharge
It must ensure regular discharge and, wherever possible, allow visual confirmation of water flow during operation.
Let's size the circuit together
Our technical support is free: we specify diameters, pump, and lengths compatible with your system's configuration.