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Watts frostproof wall hydrant 14 inch brass body with vacuum breaker and key

Watts

Watts HY-420-14 frostproof wall hydrant 14 in trap

SKU CH-60VC-A3ZPD MPN HY-420-14

A frostproof wall hydrant with a 14 inch trap and integral vacuum breaker

  • TypeDrain Components
  • 14-inch wall thickness prevents frozen pipes in cold weather
  • 3/4" FNPT or 1" MNPT inlet fits common supply lines
  • Vacuum breaker included stops backflow contamination
  • Operating key supplied allows easy on-off control
  • Frostproof design protects outdoor water supply year-round

Frostproof Wall Hydrant 14 in

The Watts HY-420-14 is a frostproof wall hydrant designed for outdoor water supply in freezing conditions. It suits residential and commercial plumbing installations where a reliable, year-round hose connection is required through an exterior wall.

14 inch wall thickness fit

The critical specification is the 14 inch wall thickness capacity, which determines whether the hydrant spans your specific wall assembly. The inlet accepts 3/4 inch FNPT or 1 inch MNPT connections, and a vacuum breaker is included for backflow prevention.

Straightforward rough-in with key access

Installation follows standard rough-in practice for frostproof hydrants: the unit mounts through the wall opening and threads onto the supply line using the listed inlet sizes. The included operating key is required to open and close the internal valve seat from the exterior; losing the key is the most common service issue.

Highlights

  • 14-inch wall thickness prevents frozen pipes in cold weather
  • 3/4" FNPT or 1" MNPT inlet fits common supply lines
  • Vacuum breaker included stops backflow contamination
  • Operating key supplied allows easy on-off control
  • Frostproof design protects outdoor water supply year-round

Specifications

TypeDrain Components
BrandWatts
ModelHY-420-14

Questions about this item

What does the 14 in wall thickness mean for installation?

The 14 in wall thickness matches the depth of the wall cavity, so the hydrant seats flush on the exterior and the inlet reaches the interior supply line.

What connections does the 3/4 in FNPT or 1 in MNPT inlet support?

You can thread directly to 3/4 in female NPT or 1 in male NPT pipe without adapters.

How much clearance is needed behind the wall for the 14 in body?

Allow at least 14 in of clear depth inside the wall cavity for the hydrant body and supply connection.

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