IMPA: 331851-331859

Uni 45 / Uni 70 Fire Hose Adapter — IMPA 331851-331859

These brass UNI 45 / UNI 70 fire hose coupling adapters solve one of the most common problems on board: mismatched fire main connections. Italian-standard UNI symmetrical couplings are widely fitted on fire hydrants, hoses and nozzles, but many vessels, ports and shore facilities still use BSP pipe threads or different nominal bores. This adapter series lets the crew connect UNI 45 to UNI 70, UNI to BSP male or female threads, and 45 mm to 70 mm hose runs without cutting or re-threading the fire main. They are standard stores on cargo ships, container vessels, tankers, bulk carriers and offshore support vessels, kept in the deck store and engine room spares locker for fire drills, surveys and emergency use.

Every adapter in the range is machined from solid brass for corrosion resistance in salt-laden, humid and wash-down environments. The range covers both UNI 45 and UNI 70 sizes and nine individually ordered variants, IMPA 331851 through 331859, each with its own code and price so purchasing officers can order exactly the configuration they need. Brass construction gives reliable thread engagement, resists dezincification better than common yellow-brass fittings and stands up to repeated coupling and uncoupling during drills and inspections. All items are supplied per piece, ready to fit existing hose tails and hydrant outlets.

ALL-K MARINE Ship Store supplies the full IMPA-coded range from China as a wholesale and retail marine supplier, with every code in the 331851-331859 series available from stock and priced individually. Sourced products pass supplier QC inspection before dispatch, and we issue quotations within 24 hours for single pieces or full series orders. We ship worldwide through freight forwarders, and on request we can deliver to your local ship agent for onward transfer to the vessel. Ship chandlers, purchasing officers and chief engineers can send their IMPA list for a consolidated quote.

Key Features

Technical Specifications

IMPA CodeSize
331851UNI 45 female × BSP female
331852UNI 70 female × BSP female
331853UNI 70 female × BSP male
331854UNI 70 female × BSP female
331855UNI 45 male × BSP female
331856UNI 70 male × BSP female
331857UNI 70 male × BSP female
331858UNI 70 male × BSP male
331859UNI 45 male × UNI 70 female

Supply Information

Frequently Asked Questions

Can you supply all nine IMPA codes in the 331851-331859 range?

Yes. Every code from IMPA 331851 through 331859 is available and priced individually, so you can order a single adapter or the complete nine-piece series. Send your IMPA list and we will quote each line separately.

What is the minimum order quantity for these brass hose adapters?

There is no fixed minimum for retail orders — single pieces are accepted. Wholesale pricing applies to larger quantities and full-series orders; contact us with your required quantities for a quotation within 24 hours.

Do you ship worldwide and can you deliver to our ship agent?

We ship worldwide via freight forwarders. On request, we can deliver the order to your local ship agent for onward transfer to the vessel. Please confirm the agent details when placing the order.

How do I choose between UNI 45 and UNI 70 adapters?

Match the adapter to the nominal bore of your fire main and hose: UNI 45 for 45 mm hose and hydrants, UNI 70 for 70 mm. If you need to connect UNI to BSP threads or step between 45 mm and 70 mm, use the corresponding code in the series and confirm the thread type on your existing fittings.

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