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ZW5000 is a hose valve used in stairwells for hose connections, and ZW5004 is a floor control valve used on each floor for sprinkler system connections.
This product is an ideal solution for reducing hydraulic calculation requirements of sprinkler systems with limited pressure, and systems using extended coverage heads.
Viega PureFlow PEX pipe and fittings have been listed by Underwriter Laboratories (UL) as approved for use in exposed fire sprinkler systems in basements.