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The proven
The optional bonnet vent adapter enables venting hazardous gases in the event of diaphragm failure
Nickel plating of the interal gas path surfaces makes it an excellent choice for analytical applications
A needle valve is included on the outlet
Airgas Model N145DHF350 Brass Specialty High Purity High Flow Pressure Regulator With 1/2" FNPT Connection Switchover The provenThis series of regulators is used for applications requiring high gas flow rates and a compact design. These regulators can handle flows up to 250 liters per minute of nitrogen with only a 5 psig pressure drop. In addition, these units will handle hydrogen flow up to 1,000 liters per minute without the resonance problems associated with other regulators in this same application.