Reversing valves

In a Farval Dualine® lubricating system, the reversing valve directs pump flow to one of the two main supply lines while the second supply line is in relief to the pump reservoir. At the completion of each half lube cycle, the reversing valve redirects the pump and relief flow. Thus, on each succeeding half lube cycle, pressure and relief flow are alternated in the two main supply lines. This action causes the measuring valves to stroke and discharge lubricant to their respective bearings. In an automatic system, the reversing also controls maximum system pressure and pump shut down.

	FR10 valves - These reversing valves operate in conjunction with pressure switches. They control end-of-line systems (DC-41 stations and standard- or heavy-duty air operated pump systems)
	DR1000 valves - These reversing valves are activated by system pressure and are adjustable between 500 and 2000 psi. They are supplied on CS1000 central stations.
	DR4-5 valves - These reversing valves are activated by system pressure and are adjustable between 500 and 3500 psi. They control non-return and return systems using CS2000, DC-36 and DC-42 central stations.

Other Helpful Documentation
 Dualine System Planning Guide