Honeywell Valve Actuator VC Modulating Direct Coupled 2-10 VDC 60 PSID Control central heating and cooling, fan coil systems, radiators and convectors. Depending on the model, it can be controlled by a low voltage SPST or SPDT switch, pulse-width modulated 24 VAC signaler floating input, modulating controller. Double insulated actuator Quick and easy replacement of moving parts Actuator head installation does not require draining the system Selectable/switchable electronic fail safe normally open or normally closed All VC series actuator-valve combinations provide 60 psi close-off -40 to 150 deg F shipping and storage temperature Environmental, electrical or ingress protection rating: Double insulated, IP40 No internal auxiliary switch 203 deg F fluid temperature Fail safe mode: NO or NC, switchable electronic Molded strain relief cable, conduit clamp Lever manual operation 50/60 Hz frequency Self-alignment shaft adapter 60 psid maximum differential pressure (close-off) Non-condensing humidity 2.8 in H x 3.7 in W x 2.7 in D If you are not satisfied for any reason products may be returned within 30 days of shipment for a credit or exchange (provided the product is undamaged), except where noted, NOT RETURNABLE. Return documentation should clearly specify credit or exchange. Returned items must be in the original packaging. All returns must include a return authorization (RGA) number that can be obtained by contacting our Customer Service Department. Original shipping cost deducted. Reference to brand names and numbers are for reference only, and not meant to imply that they are made by that manufacturer (OEM). Sometimes images shown are generic and not meant to infer that they are actual. The parts will work as intended and are high quality and precision tested. Track Page Views With Auctiva's FREE Counter