SPST Normally Closed Contacts: Provides a straightforward NC limit switch interface for rapid diagnostic testing during service calls
Key Benefits: Critical Compatibility: Engineered specifically for use with Watts 1-1/2-inch Hi-Flow and standard stainless steel manifolds to ensure a perfect mechanical fit
The use of corrosion-resistant 300 series stainless steel ensures long-term structural integrity and reliable response to fluid velocity in liquid flow lines carrying water or ethylene glycol
If the internal plenum temperature reaches 180°F
technicians often pair this with the Watts 70A-RK repair kit
Watts 0590712 Air Vent SPST Normally Closed Contacts: ProvidesThe Watts 0590712, also designated as the HAV 1 8, is a heavy duty automatic air vent designed for high performance air management in hydronic heating systems and low pressure steam applications. Built with a robust 2 piece chromed brass body, this 1 8" NPT straight pattern vent maintains system efficiency by continuously purging trapped air from radiators, baseboards, and convectors. The core of the unit utilizes advanced hygroscopic technology,