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View Full Version : MTM foam lance has different orifice sizes



sboli@neo.rr.com
03-29-2014, 08:26 AM
I could not figure out why people were getting different results with the mtm foam lance, and what the difference was between the 2600 psi and 5000 psi models were.
Inside each MTM foam lance is a SS orifice and there are 4 different sizes dictated by the pressure and gpm of your pressure washer. If you have ever had to replace the tips on your pressure washer you've probably seen that graph or formula they use to decide which tips to get. If you're tips are too small you damage to pump with too much back pressure and if you get one that's too big you lose effectiveness.
There's a picture and description on page 30 and 31 of the MTM catalog
http://www.mtmhydro.com/pdf/catalogo_mtm_hydro_2014_usa_INC.pdf
This may explain why people get so many differing results with similar pressure washers