The filter – pressure reducing valve is a device that integrates the functions of filtration and pressure reduction. FISHER brand filter – pressure reducing valves, such as the 67C and 67D series mentioned before, are widely used in the industrial field.

Working principle: Gas or liquid first passes through the filtration component, where impurities, particles, etc. are intercepted and filtered out to ensure that the medium entering the pressure – reducing part is clean. Then the medium enters the pressure – reducing component, and the input higher pressure is adjusted to a set stable output pressure by adjusting components such as the spring and diaphragm.

Type Number Internal Relief Application Spring Range (PSI) FS Number

67DFS No Standard 0 to 20 67DFS – 26

67DFS No Standard 0 to 35 67DFS – 27

67DFS No Standard 0 to 60 67DFS – 28

67DFS No Standard 0 to 125 67DFS – 202

67DFS No Standard 0 to 150 67DFS – 29

67DFSR Yes Standard 0 to 20 67DFSR – 22

67DFSR Yes Standard 0 to 35 67DFSR – 23

67DFSR Yes Standard 0 to 60 67DFSR – 24

67DFSR Yes Standard 0 to 125 67DFSR – 25

67DFSR Yes Standard 0 to 150 67DFSR – 26

67DFS No NACE 0 to 20 67DFS – N26

67DFS No NACE 0 to 35 67DFS – N27

67DFS No NACE 0 to 60 67DFS – N28

67DFS No NACE 0 to 125 67DFS – N202

67DFS No NACE 0 to 150 67DFS – N29

67DFSR Yes NACE 0 to 20 67DFSR – N22

67DFSR Yes NACE 0 to 35 67DFSR – N23

67DFSR Yes NACE 0 to 60 67DFSR – N24

67DFSR Yes NACE 0 to 125 67DFSR – N25

67DFSR Yes NACE 0 to 150 67DFSR – N26