Following the PRO Hydronic Specialties’ philosophy of “Physics First” designs, our full line of manual balancing venturis are some of the most efficient and easy to commission manual balancing devices in the industry. Our designs incorporate features such as proper regain angle and length for low energy loss. Additionally, we have integrated the proper upstream pipe diameters needed for smooth flow and optimal accuracy.
Type of Orifice
|Calibrated Variable Orifice|
|PRO Hydronic’s True Venturi|
Strainer Effect on Low Flow Manual Balancing Valves
The illustration below demonstrates orifice sizes are often very small for low flow balancing valves. Due to design, the gap from the globe or disk design is smaller than the 20 mesh opening of the strainer for low flow requirements. PRO Hydronic Specialties utilizes a ¼ turn valve which allows optimal orifice size for a manual balancing valve under low flow conditions.
This is supposed to be the statement just below the advantage/disadvantage chart where it says Why a venturi.
No calculator wheels or guessing required!