dual valve on 140 ???

My 140 has no heat. I have been told that the "dual valve" is to blame.
Any expert opinions out there?

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Might that be the "mono valve". ___________________________________________

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Nope. On the 140 chassis (S Class, '92 on) it is a heater water duovalve. Like a monovalve, but you get the idea. Two valve circuits, rather pricier too.
Bill Ditmire Ditmire Motorworks,Inc. 425 White Horse Pike Absecon,NJ 08201 http://www.ditmire.com 609-641-3392
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Yes pricey it is!
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