No it is not if flows a bit more than that due to the operating pressure of the pump, The nozzles are rated at 100psi. Nozzle size determines overall pump output. The smaller the nozzle the higher the pressure.
Here's a quote from myself from a different post
Flow does not work like people think, It does not double just because the psi doubles. Years ago I thought the same way until finding out from the makers that is not the case.
This is closer to what the nozzle put out, But it depends on voltage output of your vehicle.
M2 230psi = 2.9GPH
M3 225psi = 4.2GPH
M4 215psi = 5.5GPH
M5 190psi = 6.7GPH
M7 180psi = 9.0GPH
M10 170psi = 12.5GPH
20psi increase above 200psi on a 2GPH nozzle is around .1GPH increase in flow. at 200psi it is 2.7gph at 240psi it is at 3.0gph, 300psi it will flow 3.3gph. Many assume if you douple the pressure you double the flow but it's not correct.
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If your needing 2gph you will need a DO1 nozzle which is about 1.9gph I believe. Of course that is all dependent on how much voltage your getting to the pump. These test were done at 13.25 volts so more voltage equals more pressure. But it's not going to be a huge difference.
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