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RPM Diffusion — Professional Marine Valves

Threaded ball valve

A threaded ball valve screws directly onto threaded pipes and fittings; a quarter turn opens or shuts it. Threaded models range from DN6 to DN100.

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Models are available female-female, male-female or male-male, with a lever or a butterfly handle:

  • brass, nickel-plated or chrome-plated brass: Comet, Aster and Mini series, full-bore 2000 series;
  • DZR brass, resistant to dezincification: ISIS series, with DNV certificate stated;
  • bronze: full-bore PN40 bronze ball valve, and the Guidi 2300 valve, RINA-approved according to its data sheet, with an EN 10226-1 thread;
  • stainless steel: two-piece valves and the Alba series, up to PN100 in small sizes;
  • PVC and polypropylene.

Models with NPT threads are also available.

To choose, check the thread type (parallel ISO 228-1, EN 10226-1 or NPT), the nominal pressure on the data sheet, from PN10 to PN100, and the bore, full or reduced. Below the waterline in seawater, the site's seawater intake configurator recommends bronze or stainless steel. Some models show the ACS, the French sanitary conformity certificate for contact with drinking water.

For flanged, wafer, press-fit or 3-way valves, see the Ball valve family.

Brands: RPM and Guidi.

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