FAIRCHILD 10203 Model 10 Pneumatic Precision Regulator.

Benefits Highest accuracy pressure regulator available. Prevents supply pressure changes from affecting the setpoint. Isolates diaphragm from flow to eliminate hunting and buzzing. Compensates downstream pressure droop under flow conditions. Select the range best suited for your application. Permits backflow of downstream pressure. Facilitates the handling of harsh media. Features     High Control Sensitivity of 1/8" water column Pressure balanced supply valve Separate control chamber Aspirator tube design Nine pressure ranges available Check valve option "No yellow Metals" option Specifications Supply Pressure: 500 psig, , (3500 kPa) Maximum Flow Capacity : 40 SCFM (68 m3 /HR) @ 100 psig, , (700 kPa) supply and 20 psig, , (150 kPa) setpoint Exhaust Capacity: 5.5 SCFM (9.35 m3 /HR) where downstream pressure is 5 psig, , (35 kPa) above 20 psig, , (150 kPa) setpoint Supply Pressure Effect: Less than 0.1 psig, , (.7 kPa) for 100 psig, , (700 kPa) change in supply pressure  Sensitivity: 1/8 in Water Column Ambient Temperature: -40° F to +200° F, (-40° C to 93.3° C) Hazardous Locations: Acceptable for use in Zones 1 and 2 for gas atmosphere; Groups IIA and IIB and Zones 21 and 22 for dust atmospheres Materials of Construction Body and Housing................................................Aluminum Diaphragms ................... Buna N on Dacron (Std. unit only) Trim ...............................................Brass, Zinc Plated Steel Supply Pressure: 500 psig, , (3500 kPa)