Threaded brass reducer, 2.5 inch to 1.5 inch, female to male, pin lug.
Thread QST for Quebec
No returnable if used. For more information about our return policy, please refer to the Orders and Returns.
This high-quality solid brass reducer is an essential component for fire protection systems in Quebec. It allows you to adapt a 2.5-inch valve outlet or fire hydrant to connect a more manageable 1.5-inch hose. This specific model is machined with the QST (Quebec Standard Thread).
Quebec Standard (QST): Unlike Ontario models, this reducer features 7 threads per inch on the 2.5" female side, matching the standard used by almost all fire departments in Quebec.
Enhanced Maneuverability: By converting the outlet to 1.5 inches, it enables the use of light attack hoses, allowing a single person to fight a fire effectively.
Industrial Brass Construction: Provides exceptional durability, high pressure resistance, and natural corrosion protection, ensuring a long service life even in harsh conditions.
Ergonomic Grip: Equipped with protruding lugs (rocker lugs) to facilitate easy tightening by hand or with a spanner wrench.
Inlet (Female): 2.5 inches (QST Standard - 7 threads per inch).
Outlet (Male): 1.5 inches (Generally NPSH/IPT or according to local needs).
Material: Robust cast brass.
Application: Indoor fire valves, hydrants, and fire department equipment in Quebec.
Included: High-quality rubber gasket in the female section.
If your building is located in the province of Quebec (Montreal, Quebec City, Sherbrooke, etc.), you need the QST model. If you are in Ontario or Western Canada, you will generally need the CSA model. Attempting to screw a CSA fitting onto a QST valve will damage the threads.
It does not reduce the pressure (PSI), but it does limit the volume of water (GPM) flowing through the hose due to the smaller diameter. This is a necessary trade-off to provide a hose that occupants can handle without the specialized training of professional firefighters.
While designed for fire protection, its heavy-duty construction allows for intense industrial use. Note, however, that fire-type threads (QST) are not compatible with standard garden hose threads (GHT).
Periodically check the condition of the gasket inside the female part to ensure it is not dried out or cracked. A gasket in good condition is the only barrier against leaks when the valve is opened.
Having 1.5-inch hoses on your standpipes instead of 2.5-inch hoses is a common recommendation for occupant safety. A 2.5-inch hose filled with water is extremely heavy, and the nozzle reaction (recoil) can be dangerous for an untrained person. This reducer is therefore a direct investment in your internal team's rapid intervention capability. Just ensure that every reducer on your site follows the same standard to avoid any confusion during an emergency.
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Data sheet
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