Product guide
A landing valve is the hose connection point on a building’s riser pipe. Firefighters or trained staff connect the fire hose to the valve, and then open it to get water. This 2.5 inch landing valve is made from brass, which resists corrosion, and it is an oblique type, which means the outlet sits at an angle for a smooth water flow. The outlet is a 2.5 inch female instantaneous coupling to BS 336, the common fire hose standard, with a cap and chain. The inlet connects to the riser, and flanged inlets to BS 4504 PN16 or threaded inlets are available, so check which one you need. Valves of this type are made to BS 5041 Part 1 for wet risers, where the pipe is always filled with water. Typical models are tested at 16.5 bar at the seat and 22.5 bar for the body, and they can deliver about 8.5 litres per second at 4 bar outlet pressure.
A wet riser is always filled with water and under pressure, so a trained person can open the valve and get water at once. A dry riser is empty until the fire brigade pumps water into it. The valve type must suit the riser, so check the standard and the pressure rating before you buy.
Q1: What is an oblique landing valve?
A valve with an angled outlet that gives a smooth flow.
Q2: What hose connects to it?
A 2.5 inch fire hose with a matching BS 336 instantaneous coupling.
Q3: Is it for wet or dry risers?
The BS 5041 Part 1 type is for wet risers.
Q4: What is the pressure rating?
Typically for inlet pressure up to about 15 bar. Check your model.
Q5: Flange or thread?
Both exist. Choose to match your pipe.
Q6: What does the cap do?
It protects the outlet from dirt and damage.
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