Torin-Sifan on X: "This tank tests our air flow and static pressures by taking the differential pressure across calibrated nozzles and resolving this into air flow, qualified by standard atmospheric conditions. #hvac #
Ideal Classic FF/LX/WH Genuine OEM Original Torin Sifan WFFB0221-027 Fan 111947 | eBay
A collective achievement of 98 years at Torin-Sifan! – Torin-Sifan