CuNi Pipe&Fitting
Cupronickel (copper nickel) is an alloy of copper, nickel and strengthening elements such as iron...
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CuNi Pipe&Fitting

Cupronickel (copper nickel) is an alloy of copper, nickel and strengthening elements such as iron and manganese. Cupronickel exhibits superior corrosion resistance in seawater. Because of this, it is used for marine hardware, piping systems and sometimes for the propellers, crankshafts and hulls of premium tugboats, fishing boats and other working boats. The cupronickel alloy technology has been known by the Chinese since the third century BC under the name white copper and was used in corrosive environments. It is still used extensively in modern boat building. It is uniquely qualified as an ideal candidate for piping systems in the ship-building industry due to its alloy properties, including low general corrosion rates in seawater, resistance to stress corrosion cracking due to ammonia in seawater, high resistance to crevice corrosion and stress corrosion due to chlorides, good pitting resistance, ready weldability, ease of fabrication and inherent resistance to biofouling. In some cases, cupronickel seawater piping systems can last a ship’s lifetime.

  

Control Valve
Control valves are valves used to control conditions such as flow, pressure, temperature, and...
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Control Valve

Control valves are valves used to control conditions such as flow, pressure, temperature, and liquid level by fully or partially opening or closing in response to signals received from controllers that compare a "setpoint" to a "process variable" whose value is provided by sensors that monitor changes in such conditions

 

Vacuum Valve
A vacuum breaker typically contains a plastic disc that is pressed forward by water supply...
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Vacuum Valve

A vacuum breaker typically contains a plastic disc that is pressed forward by water supply pressure, and covers small vent holes. Should the supply pressure drop, the disc springs back opening the vent holes (which let in outside air), and preventing backflow of water.

A more complex valve that accomplishes much the same purpose is the backflow preventer.

Vacuum relief valves are sometimes known as vacuum breakers

Strainer & Flame arrester

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Strainer & Flame arrester

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