
Nozzles & Injectors - Page 1 - Pressure Tek
A #40 orifice size nozzle or larger is enough of an increase in size for pressure washers up to 8 GPM to draw chemical. All nozzles come in 4 standard patterns: 0, 15, 25, and 40 degree. The 0040 (0 degree #40 orifice) is a handy nozzle to apply chemical to surfaces up high and a 2540 (25 degree #40) would be used for lower chemical appliion.