What size is a Storz connection?

Storz FDCs with 4-inch or 5-inch couplings use large-diameter hose (LDH) to maximize the volume delivered through a single opening.

What does FDC mean in plumbing?

A Fire Department Connection (FDC) is “A connection through which the fire department can pump supplemental water into the sprinkler system, standpipe, or other system, furnishing water for fire extinguishment to supplement existing water supplies.” FDCs are required on all standpipe systems per NFPA 14, Standard for …

What are Storz adapters for?

Storz Adapters permit connecting Storz Couplings to any threaded connection. They enable you to take advantage of the speed and ease in the assembly of the Storz system when combining it with the threads on your hose, pumper or hydrant system.

How many 2 1/2 inch connections are required for each FDC?

For standpipe systems with no fire sprinkler system, NFPA 14 requires each FDC to have at least two 2½-inch internal threaded swivel fittings.

What are Storz FDCs made of?

These Storz FDCs are made with an aluminum alloy and specially heat-treated to increase their strength by as much as 30 percent over standard alloys. The exterior of these forged aluminum fittings is given a military-grade, hard-anodized coating designed to be denser, thicker, and more abrasion-resistant than other forms of anodization.

How do Storz fittings connect?

Storz fittings connect quickly. While threaded swivels and hose couplings require several turns to fully connect, Storz connections are simply pressed together and secured with a quarter-turn.

Are Storz FDCs good for high rise buildings?

However, Storz FDCs work best for low-rise buildings. To some extent, large-diameter hose trades high volume for lower pressure, making them less effective at pumping water to the top of a very tall building. Standard FDCs with one or more smaller inlets use smaller hoses designed to supply water at high pressures.

What is a Storz fire department connection?

In short, Storz connections make connecting hose simple. A fire department connection, or FDC, allows firefighters to connect their hoses to a fire sprinkler or standpipe system.