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Evosolar: Solar Water Heater Check Valves

Evosolar: solar water heater check valves, available in a variety of connection sizes and types (male or female) and pressure ratings, are one way valves that permits flow in one direction only, preventing reverse cooling flow through a solar water heater when the heater is cold. Without a reliable check valve installed, cooler water in a collector will fall by gravity and displace the warmer water in the storage tank, triggering the backup heating system, causing inefficient loss of energy.