Description
3-Way Valve Cartridge (Repair Kit) for Tiberis Cube 24 F Gas Boilers (Part Number: 306221113)
The original three-way valve cartridge (core/stem) (part number 306221113) is designed to switch the coolant flow between the heating circuit and the secondary plate heat exchanger for DHW (domestic hot water) in dual-circuit gas boilers. The part is subject to natural wear and tear due to scale and hard water salts; therefore, replacing the cartridge allows for the full restoration of the hydraulic group's functionality without purchasing an expensive complete brass assembly.
Symptoms of a Faulty Three-Way Valve Cartridge:
- When hot water (DHW) is turned on, the boiler continues to heat the radiators, and the water from the tap is cool or lukewarm.
- In heating mode, hot water mixes into the DHW circuit or vice versa.
- Coolant leakage through the stem oil seal under the three-way valve actuator (servo motor).
- Stem jamming due to scale deposits or damage to internal rubber seals.
Key Advantages:
- Durable brass stem: Highly resistant to corrosion, mechanical wear, and high coolant temperatures.
- High-quality NBR seals: Ensure 100% tightness in separating the heating and hot water circuits.
- Cost savings: Allows for quick repair of the boiler's hydraulic block without replacing the entire assembly.
Compatibility and Application:
Used in dual-circuit wall-mounted gas boilers of the Tiberis brand, as well as analogs with a similar hydraulic group:
- Tiberis gas boilers: Tiberis Cube 24 F, Tiberis Cube 18 F, Tiberis Cube 24 C, Tiberis Oberon 18/24/28 C/F.
- Related brands: Compatible with Hermann, Italtherm, Fondital, Nova Florida, and other models using standard 306221113 cartridges.
Technical Specifications:
| Parameter | Value / Specification |
|---|---|
| Part type | Cartridge / repair kit / three-way valve core |
| Part Number (P/N) | 306221113 |
| Purpose | Switching water flow between heating and DHW circuits |
| Stem/body material | Brass / heat-resistant composite |
| Actuator type (control) | For electric servo actuator (three-way motor) |
Package Contents:
- 3-way valve cartridge 306221113 — 1 pc.
Technician's tip: Before replacing the cartridge, be sure to close the water supply valves, drain the coolant from the boiler, and thoroughly clean the internal brass chamber of the three-way valve from scale and sludge deposits. When installing the new repair kit, apply a thin layer of silicone plumbing grease to the rubber seals.
