How do I know if this 3-way valve is for my boiler?

Verify the reference 05133500 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a DIFF piece (equivalent to the original Saunier Duval).

The 3-way valve diverts the water between the heating circuit and the domestic hot water (DHW) circuit.

Does it provide hot water but not heat the radiators (or vice versa)?

Typical symptom that the valve or its motor is not switching; check the actuator motor and ensure the body is not seized.

Which models is it suitable for?

Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.

Installation and recommendations

Check if you need the motor, the body, or the complete assembly.

What does refurbished mean and what coverage does it have?

Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.

RefurbishedSaunier Duval 3-way valves

Three-Way Motorised Valve Saunier Duval Thelia Twin 28 E Ref. 05133500

Name: Three-Way Motorised Valve Saunier Duval Thelia Twin 28 E Ref. 05133500
Brand: Saunier Duval
SKU: EV3VTT28E
Price: 55 EUR
Availability: InStock

55 €VAT includedIn stock · 1 unit

3-way valve: refurbished spare part that diverts water between heating and domestic hot water. Useful if it provides hot water but does not heat radiators, or vice versa. Compatible with Thelia Twin 28, Thelia Twin 28 E, Themis Twin 28 (ref. 05133500). Includes a one-year warranty and delivery within 2–4 working days in the EU.

Consult via WhatsApp

Not sure if it's your part? Send us a photo of the screen printing via WhatsApp and we'll confirm compatibility before you purchase.

Delivery in 2–4 working days

1-year warranty

14-day return

Technical support

Key Data

Reference: 05133500
Brand: Saunier Duval
Type of part: 3-way valves
Available units: 1 unit in stock
Status: Refurbished
Warranty: 1 year
Shipping: 2–4 working days (EU)
Return: 14 days

The same part (ref. 05133500) equips these models. Verified compatibility; check the reference before purchasing.

Thelia Twin

Thelia Twin 28
Thelia Twin 28 E

Themis Twin

Themis Twin 28
Themis Twin 28 E

How do I know if this 3-way valve is for my boiler?: Verify the reference 05133500 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a DIFF piece (equivalent to the original Saunier Duval).
What is it used for?: The 3-way valve diverts the water between the heating circuit and the domestic hot water (DHW) circuit.
Does it provide hot water but not heat the radiators (or vice versa)?: Typical symptom that the valve or its motor is not switching; check the actuator motor and ensure the body is not seized.
Which models is it suitable for?: Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.
Installation and recommendations: Check if you need the motor, the body, or the complete assembly.
What does refurbished mean and what coverage does it have?: Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.

Three-Way Motorised Valve Saunier Duval Thelia Twin 28 E Ref. 05133500

Key Data

Thelia Twin

Themis Twin

Spare Parts Related Boiler Thelia Twin 28 E