What is the recommended grade of oil for my diaphragm pump?

The recommended oil for a Silvan Comet diaphragm pump is SAE 20W/30 Multigrade oil. You can also use 20W/40 Multigrade oil. Do not use oil that is graded less than 20W as this has less cushioning effect between the piston and the diaphragm.

Can I use my Fire Fighter as a Sprayer?

No, Silvan does not endorse this practise. Residual chemical in a tank or line may act as an accelerant in a fire and can also pose health risks to those using a fire fighter if they are exposed to those chemicals.