and AHE series boilers

What is the temperature differential for this control

this Tecumseh hermetic compressor maintains a wide evaporating temperature range from 5°F to 59°F

To prevent equipment damage from turbulence or surging

Johnson Controls V47AC-40 Valve Freon and AHE series boilersThe Johnson Controls V47AC 40 is a heavy duty, direct acting temperature actuated water regulating valve designed for precision cooling control in HVACR condensers and processing equipment. This 3 4" NPT cast brass valve maintains optimal refrigerant head pressure by modulating water flow based on sensed temperature, effectively preventing high pressure trips in water cooled systems. Featuring a cross ambient point range of 40 to 85 degrees