Belimo B318+TFRB24-SR-S Belimo CCV,0.75",3 Way,7.4 Cv,w/ Spring Return,24V,Modulating,SW B318+TFRB24-SR-S
Belimo B318+TFRB24-3-S Belimo CCV,0.75",3 Way,7.4 Cv,w/ Spring Return,24V,Floating,SW B318+TFRB24-3-S