YU2121 Unloader 21 gpm 2175 psi Yellow Spring DIRECT Viton diaphragms are not the

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

simply take an omni ignitor and it will mount to the existing mounting plate

Die-cast anodized aluminum crankshaft fin

PVC sch 40 1

The All-Flo air-operated dual diaphragm pump is offered with a 5-year warranty

YU2121 Unloader 21 gpm 2175 psi Yellow Spring DIRECT Viton diaphragms are not theYU2121 trapped pressure unloader 21 GPM 2175 psi yellow spring specifications: 2175 psi maximum 21 GPM maximum 200 degree f. maximum dual 1 2" FPT inlet dual 1 2" FPT bypass 1 2" FPT discharge. SKU: 6959