Airgas Model C445D320 Supelcoat™ Coated Stainless Steel High Purity Two Stage Pressure Regulator With 1/4" FNPT Connection And Threadless SeatThis series of 316 stainless steel two stage high purity regulators is designed for non corrosive analytical, mildly corrosive and process applications requiring precise, stable delivery pressure control. The two stage design yields a delivery pressure change of less than 0. 01 100 psi inlet change. Convoluted Hastelloy C 22 diaphragms provide excellent regulating characteristics and allow for internal vacuum purging. The metal to metal diaphragm seal

The optional bonnet vent adapter allows venting of hazardous gases in the event of diaphragm failure

Ideal for Construction Sites

These regulators also have a check valve cylinder connection that prevents contaminates from entering during cylinder changeover

convoluted Hastelloy® C-22 diaphragm provides good regulating performance and maximum purity integrity without the need for a soft seal

Preset Safety Relief Valve - prevents excessive pressure buildup

accelerated age testing

The coating does not allow for any loss of a component of a gas such as reactive like reduced sulfur compounds

These unique patented general-purpose two-stage regulators are recommended for analytical non-corrosive

The two-stage design yields a delivery pressure change of less than 0

These nickel-plated single-stage ultra high purity regulators are recommended for non-corrosive analytical

and process applications where precise pressure control is not required

It is recommended to be located as close as possible to the pressure point to maintain constant pressure