We do not have a recommendation for any specific pump. The pump we use is a dual stage, 5.5 CFM pump with an ultimate vacuum of 2 pascals. The CFM is overkill so we rarely open the vacuum-side valve all the way. In terms of ultimate vacuum, 2 Pa seems good. It doesn’t pull air around the reservoir piston on a WP shock.
On our pump we were able to remove the smaller flare fitting and install the quick-connect fitting included with the Shock Bleeder.
| Unit Conversions 5.5 CFM = 5.5 cubic feet per minute = 156 l/m = 156 liters per minute 2 Pa = 2 pascals = 15 Microns of Mercury |
FAQ
Should I get a single stage pump rated at 5 Pa?
We suggest you keep looking for a dual stage pump.
Is a dual stage pump rated to 0.2 Pa too low?
It’s unlikely that a $120 (approximately) is going to actually pull that much vacuum. That tends to be laboratory grade equipment. It’s most likely safe to use for shock bleeding.