1533-10 White Rodgers 1947 antique pressure controller. This is a complete
low side (25 inches to 50 psi w/3-35 lbs diff) / high side
(125-250 psi w/40 lbs diff.) refrigeration set for freon, Methyl Chloride or
Sulphur Dioxide. Each control has high and low dials for easy pressure setting.
1/4" flare fittings. A real relic. These controls
are new in the box, which is dated 7-25-47.
277BP20AN Here we go again. This Penn pressure
control has a sealed box for placement in unfriendly environment.
Lid is sealed with rubber gasket. Round diaphragm on lid
is a rubber seal safety feature that will blow if leak develops. 6-240 psi settable
range. DPST 19 amp contacts. 3/4" electrical thread.
1/4" flare fitting. Old but new.
B10-6008 We saved the newest for last.
This dual pressure limit switch is of modern origin.
Each switch has an adjustable
range of 0-16 psi and will handle over pressure
to 400 psi. Electrically, each has a SPDT 10 amp switch. As shipped, the switches
are piped together externally with 1/4" copper tubing and high-low DPDT
switching is achieved.