One hundred & 600 Sequence Needle Valves are general purpose integral bonnet needle valves. Integral bonnet needle valves are use in instrumentation, laboratory, gasoline shipping and delivery procedure, and lots of other purposes. All Kerotest needle valve products, challenging and soft seat, are constructed from quality bar stock and shaped http://valves-and-fittings98417.bloggosite.com/160672/the-greatest-guide-to-stainless-steel-needle-valve