When filling a portable tank, a jet siphon with a diameter of how many inches is used?

When filling a portable tank, a jet siphon with a diameter of how many inches is used?

• A. 1 inch
• B. 1.25 inches
• C. 1.5 inches
• D. 2 inches

Answer: (C)

Filling a portable tank relies on a jet siphon to deliver water from a source into the tank, and the diameter of that siphon’s jet orifice determines how quickly water can flow. A 1.5-inch diameter provides enough flow to fill the tank efficiently while staying compatible with the typical fittings and hoses used in suppression gear. A smaller diameter would slow the fill, wasting time, while a larger diameter isn’t usually necessary or practical for standard portable tanks. So, the standard choice is a 1.5-inch jet siphon.

Filling a portable tank relies on a jet siphon to deliver water from a source into the tank, and the diameter of that siphon’s jet orifice determines how quickly water can flow. A 1.5-inch diameter provides enough flow to fill the tank efficiently while staying compatible with the typical fittings and hoses used in suppression gear. A smaller diameter would slow the fill, wasting time, while a larger diameter isn’t usually necessary or practical for standard portable tanks. So, the standard choice is a 1.5-inch jet siphon.