Yes you should. Listen, I use my D30 to run tree guns and high pressure spray wands at 550 psi all day long 12 months out of the year. My spray system is set up with the bypass from the regulator going right back into the tank with no valves or any other obstructions on that line. A jet agitation system is fed by the second ball valve on the regulating manifold, not the bypass line. Doing this, I replace diaphragms and valves once a year as PM. Never blew a diaphragm in the field. The pulsation dampener is under the metal dome screwed down with 6 or 8 bolts and containing an air fill valve tapped into it. You should have 20% in air pressure of you normal spraying pressure in that air fill valve.