Product review (5 stars): Exact replacement, I now have a spare
The part is perfect and will be kept as a spare.  When I removed old valve, input filter was clogged after 10 years of service.  After removal. cleaned filter, check & cleaned pinhole orifice of inputs fitting, reassembled and system works like new.
I'm taping new part to inside cover of humidifier in the event the next person does not diagnose the clogged filter and wishes to replace the whole unit.