Honeywell C645B Pressure Switch, 0.7 - 5.2 kPa, 0.2 kPa Differential, 34.5 kPa Maximum, SPDT, 1/4 Inch FNPT For Main Or High Pressure, 1/8 Inch FNPT For Venting Or Low Pressure, -20 to 125 deg F, Buna-N Fiber-Reinforced Diaphragm, Zinc Plated Housing, 3-1/2 Inch D, Includes: 137637C Cover Window
- Spring loaded diaphragm actuates snap-acting micro switch
- Switch can be wired to turn on alarm
- Break control circuit on pressure rise
- Lockout and manual reset optional in A and C models
- Removable, zinc plated cover protects scaleplate and adjusting screw
- Lockout models have external manual reset lever
- Pipe tappings allow selection of positive pressure differential pressure or venting connections
- Two seal off diaphragms for added reliability
Standard/Approvals: CSA File No LR1620, UL File No MP2168
Application: Air, LP and Natural Gas
