Parker Premier Valve, GP1057 is a General Purpose 1 inch valve, brass body, 1-50 psi for steam. The Parker After Market GP 1057 has a Cv of 12.0 and a maximum temperature of 300. The GP 1057 requires a G23 coil for operation.
These valves are recommended for steam service up to 50 psig saturated steam.
Note: Do not apply on systems where steam is regulated to 50 psig or below from above 50 psig. Damage to the valve will result.
Parker model number is GP 1057 ( 70777 ).
The G23 coil is NOT included with the valve, see coil section.
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