K-Rain P7005507 Standard Stem and Disc for 4000 Series
Brand: K-Rain SKU: P7005507
Product Overview
The K-Rain P7005507 is the standard stem-and-disc replacement assembly for compatible K-Rain 4000 Series indexing valves. It uses the 0.028-inch white spring configuration and is intended for systems that can provide approximately 10 GPM or more through the valve.
The stem-and-disc assembly is the primary moving component that allows the valve to advance from one outlet to the next as water flow stops and restarts. Correct spring selection is important: installing the standard assembly on a system with insufficient flow can cause unreliable indexing. The lighter P7005509 blue-spring version is intended for lower-flow applications.
Key Features
- Standard stem-and-disc assembly
- 0.028-inch white spring
- For compatible 4000 Series indexing valves
- Recommended for approximately 10 GPM or greater
- Stem and disc supplied as an assembly
Common Uses
- Replacing a worn or damaged moving assembly
- Repairing a valve that skips or fails to advance
- Restoring the original standard-flow configuration
Compatibility & Installation Notes
Measure or confirm the available flow before selecting the spring configuration. Shut off pressure, keep the valve interior clean, and inspect the cam, seals, top, and lower body during service. Do not substitute the standard assembly where the system requires the lighter spring.
Frequently Asked Questions
What does “.028-W” mean?
It identifies the 0.028-inch standard spring and its white color designation.
What flow is recommended?
K-Rain identifies this assembly for approximately 10 GPM or greater.
Why Buy the K-Rain P7005507 Standard Stem and Disc for 4000 Series?
Big Frog Supply organizes the standard stem-and-disc configuration, 4000 Series compatibility, and replacement-only contents so homeowners, contractors, and maintenance teams can distinguish this assembly from complete valves and alternate internal parts before ordering.
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