Type P203 and P203H Gas Pressure Reducing Regulators
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Catalog excerpts

P203 Pressure Reducing Regulator The P203 and P203H are available with a true monitor regulator, which acts independently of the main regulator. The monitor provides equivalent overpressure protection when compared to a standard two-regulator monitor setup. If one regulator fails, the other regulator provides control and overpressure protection. Applications • Commercial / Industrial / Service • Gas Engine Control • Gate Applications Features • Integral Monitoring • Fast Acting Minimizing Schock • Internal Relief Specifications Maximum Inlet Maximum Emergency Outlet Port Sizes Orifice Sizes End Connections Temperature Range Approx. Weight Adjusting Screw Ductile Cast Iron Lower Casing Molded Seat Assembly Upper/Lower Spring Seat P203 Integral Monitor Data Type Control Spring Part Number and Color Outlet Pressure Range Maximum Downstream Pressure with Integral Monitor in Operation Maximum Flow Through Internal Relief Valve with Integral Monitor in Operation1 Relief Monitor Spring Part Number and Color Number of Spring Seats Required 655-746-000, Green 655-746-001, Red 655-746-001, Red 655-746-002, Blue 655-746-001, Red 655-746-002, Blue 655-746-003, Silver 655-746-002, Blue 655-746-003, Silver 655-746-003, Silver 655-746-003, Silver

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Type P203 and P203H Gas Pressure Reducing Regulators-2

P203 Regulator Rebuild Kits Main Regulator - Diaphragm, disk holder assembly, cap gasket and body/lower casing o-ring. Monitor - disk holder assembly, diaphragm, pitot tube o-ring, piston guide o-ring, piston ring, and piston assembly o-ring Part Number

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Type P203 and P203H Gas Pressure Reducing Regulators-3

Note: See standard P200 Part Listing for other parts. Range Spring - Normal (0) 2” - 4.5” WC - Brown, Plated Steel 3.5” - 6.5” WC - Red Plated Steel 5” - 9” WC - Black, Plated Steel 6” - 14” WC - Purple, Plated Steel 8.5” - 18” WC - Gray, Plated Steel 14” - 30” WC - Dark Green, Plated Steel Range Spring - High (H) 1 - 2 PSI - Dark Blue, Plated Steel 1.5 - 3.25 PSI - Orange, Plated Steel 2 - 5 PSI - Yellow, Plated Steel Orifices 1/4” Aluminum 3/8” Aluminum 1/2” Aluminum 3/4” Aluminum 1” Aluminum 1-3/16” Aluminum Body Iron 2” NPT Iron 1.5” NPT Part Number P203 Monitor Parts Only - See P200 for...

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Type P203 and P203H Gas Pressure Reducing Regulators-4

P203 Port Orientation (Ordering Matrix Digit “12”)* PORT ORIENTATION (ORDERING MATRIX DIGIT "12") * Port orientation is based on the body's “Out” port location in relation to the top view of the regulator. P203 Bonnet Vent Orientation (Ordering Matrix Digit “13”) BONNET VENT ORIENTATION (ORDERING MATRIX DIGIT "13") PORT ORIENTATION (ORDERING MATRIX DIGIT "12")

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