Pentair 79104800Z Pilot Screw with Captive Gum Washer
The Pentair 79104800Z is a replacement pilot screw made of brass and supplied with a captive gum washer. It is used to secure the face plate of certain Pentair pool and spa light fixtures and ensures a watertight seal at the light housing.
Key Features
- Brass pilot screw designed for durability in underwater lighting fixtures.
- Includes captive gum washer to maintain seal integrity and resist corrosion.
- Direct replacement part for compatible Pentair underwater pool and spa lights.
Technical Specifications
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Part Number: 79104800Z
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Includes: One brass screw and one gum washer
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Application: Underwater lighting fixtures where face plate screws need replacement to maintain proper sealing.
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Material: Brass screw, elastomer (gum) washer
Installation & Compatibility Notes
Before installation, switch off power to the light circuit and ensure water is drained or the light is dry. Remove the existing screw from the light face-plate, discard old washer, and insert the new 79104800Z screw with the captive gum washer properly seated between the screw head and face plate. Tighten to manufacturer torque spec (do not overtighten). Restore power and inspect for proper light operation and watertight integrity.
Maintenance Tips
- Touch the screw and washer during annual light inspections; replace if the washer appears flattened, cracked or chemically damaged.
- If you notice leaks around the light housing or the face plate seems loose or oxidised, replacing this screw with a fresh washer may correct the issue without full housing replacement.
- Stock this small but critical part in your service kit to improve service call turnaround and reduce lighting downtime.
Why Choose This Part?
For pool service professionals, lighting contractors and supply-store inventories, the Pentair 79104800Z offers a simple, well-matched OEM replacement for securing underwater light face plates and maintaining water-tight seals. Replacing the screw and washer as part of routine lighting service helps protect against leaks, corrosion and fixture failures.
