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NOW HERE!!!
Please call for further information.
Available for distribution in the US. Geberit Mapress Stainless Steel and Copper Nickel pipes and
Fittings.
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Marine sprinkler systems
Approvals
Mapress products are ABS, BV, DNV, GL, LRS and RINA approved for use in
marine sprinkler systems. Shipbuilding applications for Mapress press
fitting systems are shown in Table 3 Mapress approvals for marine
applications.
Table 3:
Mapress approvals for marine applications |
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FM approved
The Mapress stainless steel press fitting system is FM approved for use in
wet and dry fire extinguishing systems, the galvanized version for wet
systems. The maximum working pressure for both is 12 bar.
For FM only the pressing tools EFP 2 and HCPS are approved.
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LRS approval (40 bar)
This approval differs from all of the others for fixed fire extinguishing
systems in buildings and marine sprinkler systems. It allows a working
pressure of 40 bar for the Mapress stainless steel press fitting system (DN
20 to DN 32).
Special marine components
In addition to the industrial range, Mapress supplies special marine
components (ball valves, sprinkler non-return valves and reinforced flexible
hoses as shown in Figs 9 – 11). The ball valves (Fig 9) have press fitting
end connections to accept the pipes.
The sprinkler non-return valves (Fig 10) enable the system to remain full
between pressure testing and fitting of the sprinkler heads.
The flexible hoses (Fig 11) allow site installation of subassemblies. They
are available cut to order and have press fitting end connections.
Characteristics of materials
Mapress press fitting systems carrying potable water will not suffer serious
internal corrosion.
The thin passive layer formed by stainless steel allows it to resist
corrosion. Local attacks, such as pitting or crevice corrosion, can be
caused by chloride contents well above the level permitted in potable water.
Corrosion of unalloyed steel in closed systems is minimized by the fact that
the small amount of oxygen in the water combines with the metal to form iron
oxide over the whole bore.
Unalloyed galvanized steel must not suffer prolonged exposure to humidity
without a protective coat of paint. To avoid contact corrosion of unalloyed
steel, do not connect directly to stainless steel. Fit a nonferrous metal
spacer at least 50mm long between the two. |
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Fig. 9: Ball valve |
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Fig. 10: Sprinkler
non-return valve and sprinkler head
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Fig. 11: Reinforced flexible
hoses
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Fig. 12 |
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Providing Advanced
Plumbing Technology Since 1994
