In the RED Highrise kit, what is the size of the preconnect?

• A. 2m 50mm with gated wye
• B. 4m 65mm with gate valve
• C. 3m 65mm with gated wye
• D. 3m 50mm with gated wye

Answer: (C)

In this setup, the preconnect is chosen for quick, reliable standpipe deployment with the ability to feed more than one line. The best option uses a 3-meter length of 65 mm hose equipped with a gated wye. The 3 m length provides enough reach from the standpipe outlet to a floor without excess hose dragging or getting in the way, while staying compact for maneuvering through stairwells and doorways. The 65 mm diameter (about 2.5 inches) allows sufficient flow for high-rise needs without excessive friction losses that a smaller hose would incur. The gated wye lets a single supply be split into two branches, with individual control on each branch, which is essential for coordinating two attack lines or directing flow to multiple points as the situation requires. The other options either use a shorter or longer length that hampers deployment, a smaller diameter that limits flow, or a gate valve instead of a gated wye, which wouldn’t provide the convenient split to two lines.