These are the Uniweld nitrogen regulators sold by Schmidty Racing Suspensions. See option details below.
Uniweld RHP400 (0-400 PSI delivery pressure):
The regulator is brass and has a 0-4000 PSI tank gauge with a 0-600 PSI output gauge. The regulator comes with a CGA580 tank nipple (which fits most standard nitrogen tanks), a male 1/4" (-4) flare fitting on the hose connection port, and rubber-cushioned gauges to guard against damage.
Uniweld RHP800 (0-800 PSI delivery pressure):
The regulator is brass and has a 0-4000 PSI tank gauge with a 0-600 PSI output gauge. The regulator comes with a CGA580 tank nipple (which fits most standard nitrogen tanks), a male 1/4" (-4) flare fitting on the hose connection port, and rubber-cushioned gauges to guard against damage.
Uniweld RHP1500 (0-1500 PSI delivery pressure):
The regulator is brass and has a 0-4000 PSI tank gauge with a 0-3000 PSI output gauge. The regulator comes with a CGA580 tank nipple (which fits most standard nitrogen tanks) and a male 1/4" (-4) flare fitting on the hose connection port.
Uniweld RHP3000 (100-2500 PSI delivery pressure):
The regulator is brass and has a 0-4000 PSI tank gauge with a 0-2500 PSI output gauge. The regulator comes with a CGA580 tank nipple (which fits most standard nitrogen tanks) and a male 1/4" (-4) flare fitting on the hose connection port.
Uniweld RHP3680 (200-3000 PSI delivery pressure):
The regulator is brass and has a 0-6000 PSI tank gauge with a 0-4000 PSI output gauge. The regulator comes with an industrial CGA680 tank nipple and a male 1/4" (-4) flare fitting on the hose connection port.