When flow is in one direction, the bypass relief feature is active. If the pressure drop across the element becomes excessive, the bypass relief will open slightly to maintain sufficient gas flow and assure proper cooling of the hermetic motor. When the suction filter is installed with flow in the opposite direction, the bypass relief feature is inactive and will never open, regardless of the increase in pressure drop. The T suffix in the part number indicates that these models are equipped with an access valve to permit pressure drop readings. The access valve will be operational provided the suction filters are installed with the bypass feature inactive.

• SF283F is also used as an oil filter