Frost-Proof Wall Faucets

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Comparison of three Merrill wall faucet Series

Compare	PEX CONNECTION MAP Series For PEX water lines View Series	COPPER + THREADED MAD Series 1/2" MIP or 1/2" copper sweat View Series	DOUBLE-THREAD MAT Series 3/4" MIP or 1/2" FIP View Series
Why Choose It?	Direct connection for PEX plumbing.	Versatile connection for copper or standard threaded pipe.	Threaded option when you need the Model T double-thread inlet.
Best For?	Homes and projects using PEX water lines.	New installations or replacements using 1/2" copper sweat or 1/2" MIP.	Threaded-pipe installations needing a 3/4" MIP or 1/2" FIP connection.
What You Get	Frost-proof, anti-siphon wall faucet with PEX inlet and automatic drain-down.	Frost-proof, anti-siphon wall faucet with copper/threaded inlet and automatic drain-down.	Frost-proof, anti-siphon wall faucet with double-thread inlet and automatic drain-down.
Water Line Connection	PEX end connection meeting ASTM F1807.	1/2" MIP and 1/2" copper sweat.	3/4" MIP and 1/2" FIP double thread.
Available Lengths	6", 8", 10", 12", 14"	4", 6", 8", 10", 12", 14"	12"
Frost Protection	Self-draining frost-proof design when installed correctly.	Self-draining frost-proof design when installed correctly.	Self-draining frost-proof design when installed correctly.
Backflow Protection	Anti-siphon design with dual air-check safety features.	Anti-siphon design with dual air-check safety features.	Anti-siphon design with dual air-check safety features.
Construction / Durability	Chrome-plated brass body with metal handle and durable internal components.	Chrome-plated brass body with metal handle and durable internal components.	Chrome-plated brass body with metal handle and durable internal components.
Service / Maintenance	Adjustable packing nut with rubber packing helps maintain a reliable seal.	Adjustable packing nut with rubber packing helps maintain a reliable seal.	Adjustable packing nut with rubber packing helps maintain a reliable seal.
Installation / Drain-Down	Install with a slight downward slope from inlet to outlet so the faucet can drain.	Install with a slight downward slope from inlet to outlet so the faucet can drain.	Install with a slight downward slope from inlet to outlet so the faucet can drain.

Important: Install with a downward pitch toward the outlet. Remove the hose, or make sure the hose end has no shutoff valve, so the faucet can drain completely.