Boat Plumbing can be a small nightmare. To avoid mismatches between equipment and pipes or hoses, and untoward plumbing failures, it’s essential to comprehend how hoses and pipes are defined, the suitability of different pipes and hoses for various programs, and proper installation procedures.
The nominal sizes of the majority of pipes, hoses, and fittings don’t correspond to their actual sizes, either the outside diameter (OD) or the inside diameter (ID).
Additionally, there’s absolutely no universal standard governing sizes. Given two items which are precisely the same size (e.g., 3/4 inch or 20 mm) it is quite probable that neither will actually be this size and, furthermore, that they won’t be the exact same size as each other!
Pipes and fittings are commonly copper, metal (black or galvanized), or plastic (PVC or CPVC). Copper pipe in the USA is subdivided into water pipe or tube and refrigeration pipe or tube (pipe comes in straight lengths; tubing in coils). You can also buy High Purity Plastic PTFE Solenoid Valves through http://www.nssteel.co.th/.
The water use has a purely nominal size. To put it differently, its nominal size doesn’t correspond to either its ID or its OD. Refrigeration tube or pipe, on the other hand, is measured by its outside diameter (OD)-1/inch (13-mm) cooling tube really has a 1/-inch (13-mm) external diameter. Copper fittings (connectors, elbows, tees, etc.) are created mostly to water pipe dimensions.
Copper tube and a pipe are further characterized by its wall thickness. In the USA it’s given a K, L, or M score, with the K with the thickest wall. Type L is usually used for pipes and household plumbing. In the united kingdom copper pipe and fittings are all standardized according to the exterior diameter of the pipe or tube (8-, 10-, 15-, 22-, 28-mm, etc.).
Specific refrigeration pipe or tube should always be purchased for refrigeration purposes – it’s especially dried, dried, and capped to keep out moisture. For water systems, either water or cooling pipe or tube can be purchased from any hardware store. Tubing has the benefit that it can be worked around the awkward shapes of a ship with hardly any joints. It generally comes in 50-foot rolls.