It's A entirely welded valve. It doesn't have leakage concerns through bolt connections. You can’t keep or restore the welded human body valves on-site. The seat ring shall have 2 Principal leap seals with a hearth-Protected graphite ring. The stem shall have at least two Key lip seals or U https://letusbookmark.com/story21245636/top-latest-five-strainer-valve-urban-news