This 24V valve actuator, with a nickel-plated motor, is specifically designed for use in commercial HVAC equipment, such as fan coil units, terminal reheat coils, and convectors. It is a SPST, 2-position type actuator, featuring a spring return, lever operation, and a compact construction that allows for easy installation. This actuator can fit under the cover of most baseboard convectors when fitted to the valve body. It operates on a 24 volt AC power supply, with a frequency rating of 50/60Hz and a power rating of 6 watts when driving. The actuator provides an angle of rotation of 45° and has a size of 3-1/2" width x 2-3/8" height. Its supply connection includes a 6" wire lead, and it is constructed with a stainless steel body, ensuring durability and resistance to rust. The operating temperature range for this actuator is 34 to 125°F (ambient), making it suitable for various environmental conditions. It features a one-button, quick-release mechanism, a secure 3-point, metal latch to the valve body, and a manual opener for installation and valve operation in case of power failure. The valve automatically returns to its automatic position when power is restored, and the actuator can be reinstalled or serviced without the need to drain the system or disassemble the valve. Additionally, it has a slotted conduit hole for faster wiring and a 4-second timing. This humidity-resistant actuator, approved by CSA, is compatible with VU52, VU53, and VU54 valves for controlling the flow of hot or chilled water in HVAC systems.