Plasson Drinkers: Most reliable drinker on the market. We have seen 20-30 year old Plasson drinkers still going strong in pastured poultry operations. PLASSON PARTS & SERVICE When you're looking for a superior drinker for your coops, try Plasson. For more than 40 years, Plasson has built the world's most reliable poultry drinkers -- the "standard of the industry." Benefits Include: • PLASSON drinkers are made of a rugged high-impact plastic, specially formulated to withstand the ravages of the active broiler house for many years. • The unique feature of the PLASSON drinker is the ballast bottle, which acts independently of the bell and eliminates wear on the valve mechanism. • Ensures a constant water level and a dry floor. Once a bird drinks as little as 10 grams (0.3 oz.) of water, this highly sensitive and maintenance-free system is activated. • Approximately 75-100 adult birds per PLASSON drinker.