Siemens Building Technology 331-4510 Actuator 321894-708 this is a single stage

this is a single stage control board

The Johnson Controls V-4332-6001 Spring Kit is a critical replacement component for the V-3000 and V-4000 series pneumatic valve actuators

the Fireye EB700 uses the same 18-terminal wiring base as C-Series and D-Series controls

This SPST control is generally rated for line voltage applications

This sensor is compatible with hot surface ignition (HSI) systems and is rated for both natural gas and LP (propane) applications

Siemens Building Technology 331-4510 Actuator 321894-708 this is a single stageThe Siemens 331 4510 is a heavy duty No. 3 pneumatic damper actuator designed for reliable, modular, or two position control of HVAC dampers and air valves. Built with a rugged, metal fabricated housing, this pneumatic actuator features an ozone resistant rolling rubber diaphragm that ensures consistent performance in demanding mechanical environments. It operates with a 5 to 10 psi nominal spring range and delivers a precise 2 3 8 inch stroke for