NSF P181-4: Residential Portable Electrical Spas
The word “spa” is thought to originate from the Belgian village of Spa. During Roman times, the village became well-known for its warm mineral springs,…
ASME A112.19.17-2010 (R2023): Safety Vacuum Release Systems
The largest pool in the world is in Algarroba, Chile. It holds 66 million gallons of water, stretching 1,013 meters (over 3323.491 feet) long and…