Product review (4 stars): ... Valve Y-30128-35AF This seems to be one of the better brand's ive used
This review is for item Gas Range Oven Valve Y-30128-35AF
 This seems to be one of the better brand's ive used. And i also used the same brand  igniter.. The box it came in say's its is a Robertshaw. brand.
The seller say's brand is Invensys. But not sure if that is typo or robertshaw makes Invensys.
Again look for the Robertshaw brand and you cant go wrong.. - As long as you diagnose the problem correctly.