A fluid flow system comprising: a shutoff valve comprising a spring, a piston and a rear chamber of the piston, and; a metering valve having a housing including a main inlet port and a failsafe inlet port and a spool movable within the housing, and there being a second supply port through the housing and a metering valve outlet line from the housing connected to a line leading to the shutoff valve, a second supply line communicating to the rear chamber of the piston in the shutoff valve, and to the metering valve outlet line, and the shutoff valve having the spring urging the piston to a closed position at which it blocks flow from the metering valve outlet line from reaching an outlet to a use, with the spool being movable to a shutoff position at which it blocks flow from the main inlet port and the failsafe inlet port from reaching the metering valve outlet line, and blocks flow from the second supply line from moving into the spool, such that the shutoff valve is biased to a shutoff position, the metering valve also being movable to a metering position at which the main inlet port and a main inlet orifice in the spool are aligned, and an outlet orifice in the spool is aligned with a main outlet port in the housing such that fluid can be metered to the shutoff valve and passed downstream to the use; the spool having a first end and a second end, and the housing having a first shoulder associated with the first end and a second shoulder associated with the second end, and in the shutoff position the spool having the first end spaced from the first shoulder, and the second end spaced from the second shoulder, such that control chambers are defined between each of the first and second ends and each of the first and second shoulders, and characterized in that; the metering valve having a first failsafe position at which the first end bottoms out on the first shoulder and the failsafe inlet port communicates a limited amount of fluid to the metering valve outlet line, and to the shutoff valve, and the second supply line being communicated to a line passing downstream to the use such that the pressure on the rear chamber of the shutoff valve is lower than the pressure on a front face of the piston, and the shutoff valve will allow flow to the line leading to the use, the metering valve also having a second failsafe position at which the second end bottoms out on the second shoulder, and the failsafe inlet port communicates a limited amount of fluid to the metering valve outlet line and to the shutoff valve and the second supply line being communicated to the line passing downstream to the use such that the pressure on the rear chamber of the shutoff valve is lower than the pressure on a front face of the piston and the shutoff valve will allow flow to the line leading to the use. a shutoff valve comprising a spring, a piston and a rear chamber of the piston, and; a metering valve having a housing including a main inlet port and a failsafe inlet port and a spool movable within the housing, and there being a second supply port through the housing and a metering valve outlet line from the housing connected to a line leading to the shutoff valve, a second supply line communicating to the rear chamber of the piston in the shutoff valve, and to the metering valve outlet line, and the shutoff valve having the spring urging the piston to a closed position at which it blocks flow from the metering valve outlet line from reaching an outlet to a use, with the spool being movable to a shutoff position at which it blocks flow from the main inlet port and the failsafe inlet port from reaching the metering valve outlet line, and blocks flow from the second supply line from moving into the spool, such that the shutoff valve is biased to a shutoff position, the metering valve also being movable to a metering position at which the main inlet port and a main inlet orifice in the spool are aligned, and an outlet orifice in the spool is aligned with a main outlet port in the housing such that fluid can be metered to the shutoff valve and passed downstream to the use; the spool having a first end and a second end, and the housing having a first shoulder associated with the first end and a second shoulder associated with the second end, and in the shutoff position the spool having the first end spaced from the first shoulder, and the second end spaced from the second shoulder, such that control chambers are defined between each of the first and second ends and each of the first and second shoulders, and characterized in that; the metering valve having a first failsafe position at which the first end bottoms out on the first shoulder and the failsafe inlet port communicates a limited amount of fluid to the metering valve outlet line, and to the shutoff valve, and the second supply line being communicated to a line passing downstream to the use such that the pressure on the rear chamber of the shutoff valve is lower than the pressure on a front face of the piston, and the shutoff valve will allow flow to the line leading to the use, the metering valve also having a second failsafe position at which the second end bottoms out on the second shoulder, and the failsafe inlet port communicates a limited amount of fluid to the metering valve outlet line and to the shutoff valve and the second supply line being communicated to the line passing downstream to the use such that the pressure on the rear chamber of the shutoff valve is lower than the pressure on a front face of the piston and the shutoff valve will allow flow to the line leading to the use.