Overview Reviews Product Description ZoneTight (QCV), 1", 2-way, Cv 8.2 |Valve Actuator, Electronic fail-safe, AC 24 V, 2...10 V, modulating Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × Belimo Belimo Z2100Q-K+CQKX24-SR Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments