Factory Setting:
WPS10-1, WPS10-2: 4-8 psi
WPS40-1: operates at decreasing pressure at 30 psi
WPS40-2: operates at increasing pressure at 50 psi and decreasing pressure 30 psi
WPS120-1: operates at decreasing pressure at110 psi
WPS120-2: operatesatincreasingpressureat130psianddecreasingpressure110psi