Hydrologic Pressure Regulator With 3/8 in Fittings for Stealth 100-200

Pressure Regulator for Stealth 100-200 by Hydro-logic 3/8 in. Fittings The clear housing that the Stealth-RO 100/200 & the Small Boy have should not exceed 90 psi. If you have really high pressure or possible spikes or hammer problems, then this regulator will make sure that no more than 85 psi gets to your filter. It installs in-line on the unit's feed line with 1/4" quick connect fittings.