Fire Pump Set 3D Blocks — Electric, Diesel and Jockey Pump

Three isometric fire pump blocks on concrete plinths — electric motor driven pump, diesel engine driven pump and jockey pump, drawn for pump room layouts and presentation views.

About

Three fire pumps drawn as isometric blocks on their concrete plinths: an electric motor driven pump, a diesel engine driven pump on its skid, and a jockey pump. Together they make up the set found in most wet riser and sprinkler pump rooms.

Blocks included

Electric motor driven fire pump on plinth — pump, coupling and motor
Diesel engine driven fire pump on skid — pump, coupling, engine and radiator
Jockey pump on its own base — vertical multistage with motor

How to use them

These are presentation blocks rather than working layouts. They suit an isometric of the pump room, a coordination view, or a slide explaining the arrangement to someone who does not read plans. For the actual layout drawing you want plan views with dimensions, since an isometric cannot be dimensioned usefully.

The plinths are drawn with the pumps. Check them against the equipment actually specified before using them for coordination — plinth size follows the base frame of the selected pump, and the drawn plinths will not match every manufacturer.

Pump room notes

A jockey pump is small enough to look optional on a drawing and is not. It holds system pressure so that the main pumps stay off through the small leaks every standpipe system has. Without it the fire pump starts on every pressure drop and the system wears itself out.

The diesel set needs far more room than the block suggests. Once the radiator, exhaust run, fuel tank and battery racks are added, the clear space around it is usually what decides the pump room size rather than the pumps themselves. Leave room to pull the engine as well as to stand beside it.

Both main pumps need their own suction and discharge arrangement with a test header, and NFPA 20 sets out clearances and the ventilation the diesel engine needs. Confirm against local Civil Defence requirements, which are often stricter on pump room access and separation than the code minimum.