Airgas Model E444D580 Stainless Steel High Purity Single Stage Positive Seal Regulator With 1/4" FNPT ConnectionThese single stage positive seal regulators feature convoluted, Hastelloy C 22 diaphragms that provide maximum sensitivity, minimum droop and a leak tight bonnet seal. Type 316 stainless steel internal components are ultra sonically cleaned and electropolished to a 32 Ra surface finish for applications where a contamination free flow stream is critical. Optional 15 Ra electropolished with faceseal. A rugged, mechanical linkage connecting the diaphragm

They are also equipped with a reverse-flow check valve to prevent backflow of gas into the regulator on the outlet

Outlet Needle Valve - built into body

24" High-intensity sheeting with 81" plastic handle

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

two-stage regulators is recommended for non-corrosive analytical and process applications where precise pressure control required

Because these regulators are not typically recommended for direct connection to cylinders

The check valve cylinder connection prevents air and conta-minants from entering the gas stream during cylinder changeout

Specially designed lid opens no more than 60 degrees and stays closed when not in use

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

Encapsulated Filter Seat Assyprotect valve seat

single-stage regulator is well suited for closely monitored

isolating contents from fire sources and limiting oxygen so spontaneous combustion risk is virtually eliminated