kang-China...My rule of thumb? I'd have to say so long as the valve is shown to be reliable, and works within the anticipated temperature range of the application , it is good. Why not Danfoss instead of Sporlan? The Sporlan B6 (as used in a Polycold unit for defrost) has proven itself to be reliable in this application, is more readily available here in the USA (where Polycold units are manufactured), and I would imagine is cheaper to buy as compared to a Danfoss equivalent.Quote:
the defrost valve in polycolde
the valve's brand is SPORLAND .
why don't used the DANFOSS or maybe SPORLAND IS better than DANFOSS
by your rule of thumb which is better
Another alternative would be ASCO, which is the brand that Telemark uses in their units.