Vayolli GP76851 mixer cap for Kohler-compatible valves improves sealing and reliability.
GP500520 pressure balancing unit ensuring steady shower temperature.
Kohler GP77759 compatibility with Vayolli kit for easy replacement.
Rite-Temp valve compatibility highlights reliable valve performance with Vayolli parts.
Temperature control feature reduces fluctuations for more comfortable showers.
Easy installation guide image showing steps for O-rings and seating.
Durable brass and high-quality plastic parts emphasize long-lasting bathroom components.

Vayolli

Vayolli GP76851 Mixer Cap + GP500520 Pressure Balancing Unit — Kohler GP77759 Compatible Shower Valve Repair Kit

High-performance tools and home improvement made for confident daily results

$42.72

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Why customers choose TaskHolt Tools

Elevate your shower valve performance with a trusted replacement kit

The Vayolli GP76851 Mixer Cap paired with the GP500520 Pressure Balancing Unit is a thoughtfully designed replacement set built to restore steadier water temperature and reliable operation in compatible Kohler shower systems. Engineered for Rite-Temp configurations and 1/2" shower valves, this kit integrates with Kohler GP77759 replacement parts to support consistent control and a durable seal, combining brass and high‑quality plastic for long‑lasting wear resistance.

What you get and how it helps

  • GP76851 mixer cap and GP500520 pressure balancing unit as a complete replacement pair
  • O‑ring and installation guidance to support a secure seal
  • Compatibility with Kohler GP77759, Rite-Temp, and 1/2" shower valves

In everyday use, this kit addresses common shower concerns like leakage, dripping, and temperature mismatches, aiming to deliver a more predictable shower experience. While outcomes can vary, the setup is designed to reduce abrupt temperature swings and improve control during hot and cold cycles.

Materials, durability, and quality

  • Brass and high‑quality plastic construction offer durability and reliable sealing
  • Seals and O‑rings designed to resist wear and help minimize leaks
  • Compatibility with standard valve configurations to simplify maintenance

Installation emphasizes careful handling: lubricate O‑rings before seating, ensure the O‑ring sits flat in its groove, and avoid rotating the cartridge to prevent misalignment. If scale is present, a light pass with sandpaper can help restore a clean seal and reduce leakage risk.

Installation tips and best practices

  • Lubricate all O‑ring rubber parts before installing
  • Place the O‑ring flat in the groove
  • Press the Pressure Balancing Unit firmly into place
  • Do not rotate the cartridge during assembly
  • If needed, use gentle sanding to remove limescale on internal/external surfaces

Why consider this kit

  • Potential for steadier water temperature and improved control
  • Reduced leakage or dripping through improved sealing
  • Durable components designed for everyday bathroom use

Warranty and support: this kit comes with a 3-year warranty, reflecting Vayolli’s commitment to quality bathroom accessories and ongoing customer care.

FAQ

Q: Is this GP76851 kit compatible with Kohler GP77759 and Rite-Temp valves?

A: Yes. The GP76851 mixer cap and GP500520 unit are designed to work with Kohler GP77759 on Rite-Temp and 1/2" shower valves. Please verify your valve model before purchase.

Q: What installation steps are recommended with this kit?

A: Lubricate all O-rings, place the O-ring flat in the groove, avoid rotating the cartridge, and use sandpaper to remove limescale for a reliable seal.

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