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april 2011

Thread requirements on water manifolds

The standard 228 establishes the type of threaded connections for water manifolds, according to dimensions available.

To guarantee uniformity among products from different manufacturers, Gnali Bocia adopts a series of standards that define, as well as the essential safety and environment requirements, also the dimensions and tolerances required.
One category that envisages the use of standards is that of water manifolds: these are made up of brass pipes, which is a material with high performing mechanical and physical properties, such as good yield strength and optimal anti-corrosion properties, making it ideal in applications in contact with fluids such as water. Each manifold is designed for a number of outlets varying from one to 4 making it suitable also when conveying flows over long distances between stations. The water manifolds are fitted with threads according to ISO 228, an international standard covering threaded pipes, valves, and all couplings destined for use with threaded pipes. If an additional seal is required on the water manifold thread, a seal in appropriate material is inserted. There are two classes of the 228 thread: A and B, the selection of which depends on the conditions of use. Class A covers a more restricted tolerance range of the threads for water manifolds, while B differs in a wider class of tolerance for external threads.
There are also other types of "product" standards, which can justify one or the other choice of the class under the ISO 228 standard.
 

27/11/2013


See also
27/04/2014 Water manifolds for the home The water manifolds serve to supply water throughout the house, in turn improving hot and cold water management.

27/04/2017 Gas fittings: construction and sealant GNALI BOCIA gas fittings are made from brass and every versatile

27/12/2015 Modularity of the brass manifold for heating Threaded at its ends, the manifold for heating enables the combination of different models for attaining the right number of outputs

27/01/2016 Brass manifolds for the sake of water distribution Range of brass manifolds suitable for water distribution in civil and industrial installations.

27/07/2013 The functionality of the water manifolds The purpose of water manifolds is to convey the water flow, and they are mounted in homes or industrial buildings


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