Setra 231GRS13MD Trans 30067439-890 While the EF17BZ273 is the

While the EF17BZ273 is the valve body itself

Factory-Spec Performance: Delivers a consistent 3400 RPM rotation (CWLE) to meet the original equipment’s flue gas evacuation requirements

Continuous Duty Rated: Constructed with Class F high-temperature insulation to prevent dielectric breakdown during prolonged operation

With the plunger depressed

making it ideal for systems with high-draw accessories like smart thermostats or multiple zone dampers

Setra 231GRS13MD Trans 30067439-890 While the EF17BZ273 is theThe Setra 231GRS13MD is a professional grade wet to wet differential pressure transducer designed for rapid field deployment in HVAC hydronic systems and process control. This multi configurable unit features remote sensors with a conduit connection, eliminating the need for complex copper piping runs back to the transducer body and reducing labor by nearly a third. Built for heavy duty energy management systems, the 231GRS13MD includes an LCD display