the 1F72-151 is a hardwired unit that requires a 24VAC common (C) wire for operation

What is the maximum operating temperature for this vacuum relief valve

and 143-80-2 model regulators

Durable Construction: Heavy-duty brass body and stainless steel internal parts prevent corrosion in high-moisture environments

Belimo NMB24-SR Motor Actuator Els PW 29614 the 1F72-151 is a hardwiredThe Belimo NMB24 SR is a high performance non spring return actuator designed specifically for the proportional modulation of dampers in commercial HVAC systems. Delivering a robust 90 in lb torque, this direct coupled actuator is capable of controlling damper surfaces up to 22 square feet without the need for complex linkages. It operates on a universal 24VAC DC power supply and responds to a standard 2 10 VDC modulating signal. For systems requiring