Danfoss ab-qm 4.0 balancing and control valve dn15 hf with outside thread

Danfoss AB-QM 4.0 flow limiter DN15 HF with external thread Product description: Danfoss AB-QM is a pressure independent control valve (PICV) that combines high accuracy with market-leading user-friendliness. The design of AB-QM is fully geared towards ensuring that your projects meet the schedule and budget, while providing the most efficient HVAC system. Pressure independent valves are control valves that have an automatic adjustment function. A built-in pressure regulator maintains a constant differential pressure across the control valve, ensuring full authority and automatic flow limitation. By combining two functions into one, regulation and automatic water balance, Danfoss PICVs offer a cost-effective solution to the challenges faced by forward-thinking designers of HVAC systems.