We have a number of Matheson 3420 Series high-purity type gas regulators. These are model 3423, rated for 400 psi inlet and 0-125 psi outlet. We used them in our laboratory for nitrogen, oxygen, etc. Theyve only been used indoors. We have them mounted to 8 x 13 inch aluminum panels with onoff valves, as shown in the photos.Matheson says theyre suitable for chromatography with FID, FPD, PID, and others, with any detection limit, and ECD, ELCDHall down to 50 ppm.Heres some more specs from Matheson Maximum flow rate at 400 psig, N2 2,400 scfh 1,175 litersmin Operating temperature -15F to 140F Porting 14 NPT female Porting configuration 2 High, 2 Low Made in USAMatheson catalog price is $360. Wed like to get around $100 each. Less if you buy more. I will ship them to you if youre not in the area.Closing our business. Lots of items for sale, heavy duty tools, electrical tools and hardware, breakers, starters, pumps, electrical enclosures, truck axle scale, commercial and industrial items. Everything thats here will be sold.See our other listings. Click where it says More Ads by this User and scroll through the list til you find the thing youre looking for.Thanks,Mike
