Product review (5 stars): Great value & quality
Great quality and price. One important point is that if you are fitting the new valve to the existing posts, you may need to file down (or use a belt sander as I did) to take a bit off the casting bottom. Not much needs to be removed but if you have metal against metal it will leak. The O ring needs to make the seal. If you are doing new work or replacing the entire unit no adjustment is needed.