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Close-up front view of Hunter Pro-Spray check valve (437400SP) showing valve body and sealing surface, photographed on a neutral background for product detail.

Hunter Pro-Spray Check Valve 437400SP - Field-Install Drain Check

Brand: Hunter
Save 44%
$6.31
$3.55
SKU 437400SP
In Stock (438)

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Replacement drain check valve engineered for Hunter Pro-Spray pop-up sprinkler bodies (SKU 437400SP). Installed in the Pro-Spray body, this field‑install option prevents low‑head drainage at sprinkler heads on slopes, helping protect turf and plantings while conserving water.

  • Specifically designed for Hunter Pro-Spray pop‑up bodies; installs into the existing sprinkler riser.
  • Stops low‑head drainage after system shutdown to prevent puddling, erosion and plant damage.
  • Reduces wasted water from leaky nozzles and improves overall system efficiency.
  • Field‑installable — insert into the Pro‑Spray body without replacing the entire head.
  • Compact, lightweight design for reliable sealing and long service life when used with compatible heads.

Compatible with Pro Adjustable Nozzles, Pro Fixed Nozzles and MP Rotators when used in Pro‑Spray bodies. For model‑specific lift/hold values and detailed installation steps, refer to the Hunter Pro‑Spray specification sheet and the 437400SP product page. Documents and spec sheets are available from the manufacturer for professional installers and maintenance planning.

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Frequently Asked Questions

What does the 437400SP check valve do and why use it?
It prevents low‑head drainage at Pro‑Spray pop‑up heads, stopping puddling and erosion while conserving water.
How is the 437400SP installed in a Pro‑Spray body?
The valve is field‑installable: remove the riser or head, insert the check valve into the Pro‑Spray body, then reassemble and test.
Is 437400SP compatible with my Pro‑Spray sprinkler heads?
Yes. The 437400SP is designed specifically for Hunter Pro‑Spray pop‑up sprinkler bodies and fits compatible models.
Up to what elevation will the check valve prevent drainage?
Lift capability is model‑dependent; the check valve prevents drainage for installations with several meters of elevation change — see Hunter specs for exact values.