www.pmmag.com/articles/88799-danfoss-flomatic-corp-introduces-auto-drain-valve-model-70
Danfoss Flomatic Corp. introduces Auto-Drain Valve™ Model 70
October 1, 2005

Danfoss Flomatic Corp. introduces its new Auto-Drain Valve™ Model 70. Used in sprinkler, agricultural watering, irrigation drainage and domestic water systems, the valves are reliable and maintenance-free. Provides automatic drainage of water system when the line pressure drops below 10 psi.
Circle 45