what size tip should i be using

[wal45]

still looking for answer? USING 6.5 TRASH PUMP SET UP .SPRAYING LOTS OF SEALER VERY HARD TO CONTROL REALY NEED TO KEEP MOVING I THINK LAST TIP WAS 80/50 NOT MUCH DIFFERENCE WITH IDLE SET DOWN LOOKING FOR IDEAS . THANKS

[sealcutter]

Can't help you my friend, everyone I know uses diaphram pumps, never used a trash pump set up.

[Mdirrigation]

Considering trash pumps are designed for pumping water fast thru big hoses , not spraying sealer , you have a problem . You may want to consider buying a professional unit with a mechanical mixer , and a compressor with an air diaphram pump . You can then adjust the pressure and flow .

[prestige101]

try to go to a 80/40 tip and use your ball valve to help control also