DIRECT ACTING REGULATORS

P133 Gas Pressure Reducing Regulator Technical Literature
P133L Flow Capacities Charts
P133H Flow Capacities Charts
P133K Regulator Capacities Charts

LINE PRESSURE AND SERVICE REGULATORS

P200 Gas Pressure Regulator Technical Literature
P200 Flow Capacities Charts
P200 H Flow Capacities Charts
P200 K Flow Capacities Charts

P200, P201, P202 Gas Pressure Regulators Technical Literature

P212 Gas Pressure Regulators Technical Literature

P300 Gas Pressure Regulators Technical Literature

P303 Gas Pressure Regulators Technical Literature

P143 Internal Relief Regulator Technical Literature

P140 Internal Relief Regulator Technical Literature

PILOT-OPERATED REGULATORS

P99 Pressure Reducing Regulator Technical Literature
P99 Capacities of Type 99 Regulators (Full Capacity) Charts

RELIEF AND BACK PRESSURE VALVES

P289 Back Pressure Regulator Technical Literature

P1808 Pilot-operated Relief Valve Technical Literature

P98H Back Pressure Regulator / Relief Valve Technical Literature 
P98H Back Pressure Regulator / Relief Valve 1-1/2" or 2" Technical Literature 

HIGH PRESSURE

P32, P36, P37, P38 Technical Literature 

P627 Low and High Gas Pressure Regulator Technical Literature 
P627 Flow Capacities Charts and Flow Coefficients

P630 High Flow Gas Regulator Technical Literature 

P912 Pneumatic Air Pressure Regulator Technical Literature

OTHER DOCUMENTS

Regulator Troubleshooting: A Practical Guide (Keith D. Webb, P.E. Schlumberger)