Airgas Model E444D670 Stainless Steel High Purity Single Stage Positive Seal Regulator With 1/4" FNPT Connection Single Stage and the threaded-seat design allows

and the threaded-seat design allows for internal vacuum purging

26/100 psi inlet change

flame-resistant (FR) fabrics on the market able to pass the ASTM F955 test for molten iron

it does extremely well in CO2 service

Airgas Model E444D670 Stainless Steel High Purity Single Stage Positive Seal Regulator With 1/4" FNPT Connection Single Stage and the threaded-seat design allowsThese 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