RHPS series TBRS and TBVS model regulators provide accurate pressure control in low-pressure gas systems. One common application is accurate control of a blanketing (inert) gas in a closed tank or vessel. Installed on a tank’s inlet and outlet, the TBRS (inlet) and TBVS (outlet) regulators maintain a tank’s blanketing gas at a constant pressure. Changes in the tank pressure due to a change in its level or temperature automatically trigger the regulators to maintain the desired pressure of blanketing gas over the tank’s contents. The regulators provide full mechanical control and are not dependent on external power sources. The spring-loaded, pressure reducing TBRS model accommodates inlet pressures between 1.5 to 230 psig and can regulate outlet pressures down to between 0.07 to 7.3 psig. Likewise, the spring-loaded back pressure TBVS model senses pressures between 0.07 and 7.3 psig. Operating temperature range for both models is -4 to 280 degrees F. Both models feature 316L stainless steel body and spring housing construction, PTFE diaphragms, standard fluorocarbon seals and optional EPDM or perfluorocarbon seals.