The basic 67C Series regulator come equipped with a wrench or handwheel adjustment (67CW or 67CH Series). The highly accurate 67CD Series eliminates the need for a pressure gauge on portable applications by using calibrated scales on the spring case, allowing visual adjustment of outlet pressure. The non-adjustable 67CN Series provides a tamper-resistant spring case and one of three fixed setpoints: 10, 15, or 20 psi / 0,69; 1,0; or 1,4 bar.