Fisher 3/4" X 3/4" Fnpt 2nd-Stage, 9"-13" Wc, Set 11" Wc


The Type R622-DFF Second-Stage regulator is designed for two-stage light  commercial applications up to (31kg's /hr) 1,550MJ/hr at 70kPa inlet pressure. The R622 contains a high performance relief valve and a large 3/4-inch screened vent to limit downstream pressure to less than 2 psig (0,14 bar) in an overpressure situation The R622-DFF is adjustable from

 2.2 to 3.2 kPa). UL Listed.