4 gpm 4000 psi Hot Portable Pressure Washer KEY START GX390 Honda TSS1511 Belt Driven 1" Viton diaphragms are not the 6474 Size:3/8" FPT place less stress on 1"

Viton diaphragms are not the best choice because of the following reasons according to All-Flo: Santoprene and other thermal plastic elastomers (TPE) will have a very long flex life due to the nature of the material

or melted valves and worn or damaged O-rings

Chemical compatibility rating:

Lubricate the balls with never seize or anti seize compound

Suttner ST-261 Regulating Unloader Valve 8 GPM 3600 psi

4 gpm 4000 psi Hot Portable Pressure Washer KEY START GX390 Honda TSS1511 Belt Driven 1" Viton diaphragms are not the 6474 Size:3 8" FPT place less stress on 1" Viton diaphragms are not the best choice because of the following reasons according to All Flo: Santoprene and other thermal plastic elastomers (TPE) will have a very long flex life due to the nature of the material or melted valves and worn or damaged O rings