Interior thread plastic cap 2.5 inch with chain, threads adapted for the province of Quebec

2.5" Plastic Internal Threaded Cap with Chain – QST Thread (Quebec)

This high-resistance plastic cap is a cost-effective and efficient solution for protecting fire department connections and standpipe valves. Specifically designed with the QST (Quebec Standard Thread), it ensures perfect compatibility with fire service equipment across the province of Quebec.

Why Choose This Plastic Cap?

• Vandalism and Debris Prevention: Seals 2.5" openings to prevent the accumulation of trash, bird nests, or ice while discouraging the insertion of foreign objects into the piping.

• Economic Alternative: Provides adequate protection at a lower cost than metal models and is less prone to theft due to its material value.

• Corrosion Resistance: Its technical plastic construction ensures it will never rust, making it ideal for humid or saline environments.

• Included Safety Chain: Equipped with a heavy-duty chain to keep the cap attached to the fitting, ensuring it is not misplaced when removed.

Technical Specifications

• Nominal Diameter: 2.5 inches (65 mm).

• Thread Type: QST (Quebec Standard Thread).

• Material: High-density robust plastic.

• Accessory: Included retaining chain.

• Usage: Protection of male threads on Siamese connections and fire valves.

Frequently Asked Questions (FAQ)

Is this cap as resistant as a metal cap?

While it does not have the structural resistance of brass against extreme impacts, it is perfectly suited for protection against weather and debris. It is an excellent choice for indoor installations or areas less exposed to mechanical shocks.

Can I use it in Ontario or the United States?

No, this cap features the QST thread (7 threads per inch), which is exclusive to Quebec. For Ontario, you must use a model with a CSA thread.

Will the plastic break during a Quebec winter?

No, this cap is made from a technical plastic designed to maintain its flexibility and strength even in very cold weather, preventing cracks due to freezing.

Can this cap stop a pressurized water leak?

This model is a protective cap against dust and debris. It is not designed to hermetically seal a valve leaking under high hydraulic pressure.

OHS Expert Advice

Choosing a plastic cap is often a smart strategy for buildings located in urban areas where metal theft (brass/bronze) is frequent. A connection without a cap quickly becomes a dumping ground, which can paralyze the water supply during a fire. During your inspections, check that the cap's threads are not dull and that it screws on easily. A cap that is easy to remove allows firefighters to act more quickly.

Do you need additional safety equipment?

Check out these items:  18-inch orange warning cone (EPTCONE), yellow plastic monthly inspection tag (IPTAG4), 10 lb class ABC portable powder fire extinguisher (EXABC10), outdoor plastic surface cabinet (EC9), 20 lb portable powder fire extinguisher (EXABC20).

Under “Accessories” at the bottom of the page. If you are looking for work equipment, check out the following products: Stopper II cover without local alarm (ECSTI1200FRE), manual wall-mounted fire alarm station (ECST270), or Weather Stopper cover (ECSTI3150FRE).

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