Comparison : Item # B741, Miniature Integral Filter/Regulator
Item # B741B, Miniature Integral Filter/Regulator with 2-Position Mechanical Lockout \Knob
Item # B741G, Miniature Integral Filter/Regulator with Gauge (0 to 160 psi)
Item # B741I, Miniature Integral Filter/Regulator with Instrument pressure (3 to 20 psi Adjustment)
Item # B741J, Miniature Integral Filter/Regulator with Overnight Drain Plastic Bowl