means of heading

Nexus Translate (asker) Jul 15, 2015:

Here's some more context Start up and operation of pumps used for elevated temperature service requires some additional precautions. Sudden introduction of hot liquid into a cold pump will cause uneven expansion of internal parts with resultant pump wear or failure. If the system in which the pump is used does not allow a gradual increase in liquid temperature, then an auxiliary means of heading is required. Type B pumps incorporate an integral system jacket in the pump body. This can be used to preheat the pump and melt any liquids such as tars and asphalt that might solidify in the pump during shut down.

Kirsten Larsen (X) Jul 15, 2015:

Yo creo que allí hay un error de escritura. Debe decir "heating" en vez de "heading".