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Backflow preventer for hydronic heating systempdf Backflow preventer for hydronic heating systemaust

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The air pressure charge and the rubber bladder give the expanded water a place to go. This prevents

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Low maintenance, easy-to-install thermostatic mixing valves (TMVs) are designed to protect against a

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Instead of lifting and lowering a gate, the handle operates a plunger that presses against a valve s

Pictured is a "flat/square head" valve knob. Its purpose is to prevent operation by hand o

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