Double Fire Hydrant Standpipe, a device used by firefighters to connect hoses to an underground water supply.
Design: Features a dual-outlet head, allowing two fire hoses to be connected simultaneously.
Material: Constructed from durable, lightweight aluminum alloy.
Function: It is screwed into a hydrant valve on the ground to provide a pressurized water source for emergency operations.
Specifications: Often compliant with British Standard BS 336 for instantaneous couplings.