I am trying to locate a manufacturer(s) of excess flow valves for hazardous liquid service. The valves we currently are using are 3" 300#RF flanged valves manufactured by Guardian. We are using these for loading material into trucks at approximately 110 Tons/Hour. We are modifying an existing loading spot and need additional needle valves. Materials of Construction are carbon steel or SS. Your help would be greatly appreciated.
My company may be able to help.  We manufacture compact manifold valves and have a wide varity of materials to suit given applications.  These are generally intened for high pressure applications and may be more expensive than what you actually need.

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