the VA-7200 actuator features internal jumpers or DIP switches that allow you to select between modulating 2-10 VDC / 4-20 mA

Reliable Switching: Heavy-duty internal contacts designed to handle the inductive loads typical of HVAC fan motors

but for NEMA 4 requirements

or carbon buildup around the manifold interface

2-position powerhead designed for rigorous hydronic heating and cooling systems

Crown Engineering OSVA38BIO Valve 326058-757 the VA-7200 actuator features internalThe Crown Engineering OSVA38BIO is a durable biofuel oil safety valve designed for use in modern heating systems running on renewable or blended fuels. This 3 8" oil safety valve (OSV) from Webster is built to automatically shut off oil flow in the event of a line break or excessive flow condition, helping protect both equipment and property. Engineered for compatibility with biofuel applications, this Webster OSV valve maintains reliable operation in