1 4 npt double stage gas regulator

{"cid":"91189984","title":"3000PSI R31 stainless steel dual stage oxygen regulator with two manometers","imgUrl":"https:\/\/img.chinax.com\/nimg\/96\/09\/186fc5f57830eaac1a20c03b7af4-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"AFK","Model Number":"R31","Minimum Order Quantity":"1 - 9 Pieces","Place of Origin":"Guangdong, China (Mainland)","Supply Ability":"2000 Piece\/Pieces per Week","Packaging Details":"Each piece with a PP bag first, then put in a small box, outside is in carton.","Certification":"CE","Material":"316L SS","Maximum inlet pressure":"3000, 500PSI","output pressure":"0-25,0-50,0-100, 0-250PSI","working temperature":"-23~+74 deg C","Applied gas":"pure gases, standard gases, corrosive gases and so on","bonnet material":"ss316L","seat":"PCTFE","Spring":"ss316L","O-ring":"viton","strainer":"316L (um)","Port":"Shenzhen"}}