A differential pressure loss valve comprising: a. a sleeve incorporating a cylindrical hollow section having a continuous cylindrical helical thread formed in said cylindrical hollow section; b. a channel carrier incorporating a continuous cylindrical helical thread formed in its outer wall, and said channel carrier being configured to fit within the cylindrical hollow section of the sleeve such that at least a portion of the cylindrical helical thread of the sleeve overlaps with at least a portion of the cylindrical helical thread of the channel carrier , and the space between the cylindrical helical thread of a portion of the channel carrier being positioned within the sleeve and the cylindrical helical thread of the sleeve facing the portion of the channel carrier positioned within the sleeve form a composite channel , said composite channel having a constant cross-section; c. a housing configured such that the sleeve and channel carrier are within the housing, wherein the housing comprises a first end cap attached to an upper end of the sleeve and a second end cap attached to a bottom end of the sleeve ; d. an inlet port configured to receive fluid into the housing; e. an outlet port configured to allow fluid having entered the housing via the inlet port to exit the housing after flowing through the portion of the sleeve positioned downstream from the inlet port ; and f. a pressure relief port configured to allow an overflow of the fluid to flow into the inlet port ; wherein the pressure relief port is incorporated in the first end cap of the housing, the outlet port is incorporated in the second end cap of the housing, and the inlet port is incorporated in the sleeve between the pressure relief port and the outlet port , and wherein fluid flows through the valve housing and the differential pressure loss of the valve is controllable by positioning the channel carrier within the sleeve . a. a sleeve incorporating a cylindrical hollow section having a continuous cylindrical helical thread formed in said cylindrical hollow section; b. a channel carrier incorporating a continuous cylindrical helical thread formed in its outer wall, and said channel carrier being configured to fit within the cylindrical hollow section of the sleeve such that at least a portion of the cylindrical helical thread of the sleeve overlaps with at least a portion of the cylindrical helical thread of the channel carrier , and the space between the cylindrical helical thread of a portion of the channel carrier being positioned within the sleeve and the cylindrical helical thread of the sleeve facing the portion of the channel carrier positioned within the sleeve form a composite channel , said composite channel having a constant cross-section; c. a housing configured such that the sleeve and channel carrier are within the housing, wherein the housing comprises a first end cap attached to an upper end of the sleeve and a second end cap attached to a bottom end of the sleeve ; d. an inlet port configured to receive fluid into the housing; e. an outlet port configured to allow fluid having entered the housing via the inlet port to exit the housing after flowing through the portion of the sleeve positioned downstream from the inlet port ; and f. a pressure relief port configured to allow an overflow of the fluid to flow into the inlet port ; wherein the pressure relief port is incorporated in the first end cap of the housing, the outlet port is incorporated in the second end cap of the housing, and the inlet port is incorporated in the sleeve between the pressure relief port and the outlet port , and wherein fluid flows through the valve housing and the differential pressure loss of the valve is controllable by positioning the channel carrier within the sleeve . <EOS>