Instrumentation
Pressure Regulators
Instrument Regulator R38. 
R40 Conventional Pilot Regulator, and R41 
Aluminum Model 1/4" Port Size Feedback Pilot Regulator
Fluid:Compressed air. 1/4" Port Size.  Fluid:Compressed air.
Maximum pressure: 290 psig (20 bar) Inlet pressure range:10 psig-450 psig 
Operating temperature: -40° to 175°F Operating temperature: 0° to 175°F
Typical relief differential at 30 Maximum bleed rate at 50 psig  outlet
psig (2 bar) outlet pressure: 2.3 psig pressure: 0.25 scfm (0.12 dm3/s)
Body: Aluminum; Bonnet: Aluminum; Body, bonnet: Aluminum
Adjusting screw: Steel; Valve: Teflon;  
Elastomeric materials: Nitrile  Elastomers: Nitrile
Conventional Pilot Regulators       11-400, 20AL Pilot Operated Regulators  11-042 and 11-008
1/4" Port Size.  Fluid:Compressed air. Fluid:Compressed air.
Maximum pressure: 360 psig (25 bar) Inlet pressure range:
Operating temperature: 0° to 175°F 10 psig-400 psig 
Typical flow with 100 psig  Operating temperature: 0° to 175°F
inlet pressure, 23 psig Body: zinc; Bonnet: aluminum;
set pressure and 1.5 psig droop from Bottom plug: 1/2", 3/4 ports: brass
set:4.2 scfm (2 dm3/s) 1" ports: glass filled nylon
Body, bonnet: Zinc Valve: brass
Elastomers: Nitrile Elastomers: nitrile