You could change it out to a non regulated check valve connector and put an external water pressure regulator on at the hose bibb. On parks that have only 50-60 psi or lower I don't even use a regulator.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7