Description
Gas Valve for Viessmann
This Viessmann Gas Valve GB-ND 055 E01-DG 30/35 NG controls gas flow to the boiler burner, ensuring safe and efficient heating. The Viessmann boiler part (part number 7849854) regulates pressure and maintains steady performance. It supports specific Viessmann 30 and 35 NG boilers, helping extend system life and restore reliable operation.
Compatible Boilers
This part is compatible with the following models:
100 WB1HA Series
• 30kW System ErP – GC 41-819-38 (Serial No. 7543423)
• 35kW System ErP – GC 41-819-39 (Serial No. 7543425)
If you’re looking for a Viessmann Gas Valve 7823840 Vk4115v or any other different Viessmann Gas Valve, follow the link provided.
Why Choose This Product?
This Viessmann boiler part is pre-owned and thoroughly tested to meet Viessmann standards. It provides reliable gas flow regulation and improves combustion efficiency. By replacing your faulty valve with this part, you help reduce breakdowns and boost boiler safety. It’s a cost-effective solution for long-term performance.
Delivery and Return
Place orders before 1 PM for same-day dispatch via reliable couriers. Choose from standard or next-day delivery options. Returns are accepted within 30 days if the part is unused and in original packaging. Always use a Gas Safe registered engineer for installation and warranty validation.
Frequently Asked Questions
1. Which boilers are compatible with the Viessmann Gas Valve GB-ND 055 E01-DG?
This gas valve is compatible with Viessmann 100 WB1HA Series boilers, including the 30kW System ErP (GC 41-819-38) and 35kW System ErP (GC 41-819-39). Always check your boiler’s model and serial number to confirm compatibility.
2. What does the gas valve do in the boiler?
The gas valve controls the flow of gas to the boiler burner, regulating pressure to ensure consistent and safe combustion. This helps maintain stable boiler performance and prevents potential malfunctions.
3. How long is the warranty for the gas valve?
Pre-owned Viessmann gas valves come with a 6-month warranty. This covers any functional issues but requires proper installation by a Gas Safe registered engineer.
4. Can I install the gas valve myself?
For safety and warranty purposes, installation must be carried out by a Gas Safe registered engineer. Incorrect installation can lead to unsafe operation or damage to the boiler.
5. How does the gas valve improve boiler performance?
Replacing a faulty gas valve helps maintain correct gas pressure, improves combustion efficiency, and reduces the risk of breakdowns. This ensures safer and more reliable boiler operation over time.












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