Arrowhead Brass PK8008 8-Inch Wall Hydrant Stem Assembly
Brand: Arrowhead Brass | SKU: PK8008
Product Overview
The PK8008 is a genuine replacement operating stem for compatible 8-inch Arrowhead Brass 450 and 480 Series frost-proof wall hydrants. It allows the internal stem to be replaced while the existing hydrant body remains installed.
Select the replacement by the hydrant’s nominal wall length, not by measuring only the visible portion of the old stem. Confirm the series and installation age before ordering because hydrants manufactured before 1999 use a different stem length.
Key Features
- For compatible 8-inch 450 and 480 Series hydrants
- Complete replacement operating stem
- 12-point handle spline
- Genuine Arrowhead Brass service part
Common Uses
- Repairing a compatible frost-proof wall hydrant
- Replacing a bent, worn, or damaged operating stem
- Restoring shutoff operation without replacing the complete hydrant
Technical Specifications
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Compatible hydrant series: 450 and 480
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Compatible hydrant nominal length: 8 in.
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Handle connection: 12-point spline
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Part type: Complete stem assembly
Dimensions
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Stem assembly overall length: 12 in.
Compatibility & Installation Notes
Confirm the hydrant is an 8-inch Arrowhead Brass 450 or 480 Series model. For hydrants installed before 1999, the manufacturer specifies a stem that is 1/4 inch longer and uses the “SP” suffix. Shut off the water supply and relieve pressure before service.
Frequently Asked Questions
Why is the stem 12 inches long for an 8-inch hydrant?
The 8-inch measurement is the hydrant’s nominal wall length; the complete operating stem extends through the valve body and measures 12 inches overall.
Will this fit a 12-inch hydrant?
No. Use the stem assembly specified for the hydrant’s exact nominal length.
How do I know whether I need an SP stem?
Hydrants installed before 1999 use the older stem length. Confirm the age or measure the removed stem before ordering.
Why Buy PK8008 From Big Frog Supply?
Big Frog Supply separates nominal hydrant length from total stem length and highlights the pre-1999 difference that commonly causes ordering mistakes.
