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The A1S is a replacement power head for all Valemo zone valves
with mounting bracket welded
Over 250K cycles of flawless operation
Simply thread in the PEX fitting adapter for the PEX type and brand of your preference
V3427-A1S Zone Valve, 3-way, 1" NPT, 24 VAC w/ End Switch MCF The A1S is a replacementSuperior performance, durable construction, economically priced. Controlling flow of water in hydronic heating or cooling systems. Includes end switch for signal feedback and control, or use without end switch feedback (simply not connecting switch wires). NPT threaded zone valves are common in homes and buildings built with galvanized pipe. NPT threaded zone valves are growing in popularity for homes and buildings using PEX plumbing. Simply thread in