Mercedes Heater Water Solenoid Valve--Why the Screen & Diaphragm?

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Posted to HVAC Forum on 12/17/1999 4 Replies

NetTechs:

1981 MB 300SD (turbo diesel) HVAC system.

I understand the basic operating theory of the in-hose heater water pump (keeps hot water circulating at low RPMs when heat is requested) and the mono (water shutoff) valve/solenoid (enhances A/C operatio... Login to read more.

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