Abstract: A flow-through pressure regulator includes housing structure having a fuel inlet and a fuel outlet. A seal band is defined by the housing structure. A valve element is movable between open and closed positions. The valve element has a sealing surface that engages the seal band in the closed position to prevent fuel from passing from the fuel inlet to the fuel outlet. A compression spring is disposed in the housing structure. The spring is constructed and arranged to bias the valve element to the closed position in opposition to pressure exerted on the valve element by fuel at the fuel inlet. A guide member is associated with the valve element and is constructed and arranged to align the valve element with respect to the seal band. A calibration member is associated with an end of the spring and is constructed and arranged to pre-set compression of the spring.