Truma Adapter Screw Union 70020-02700

Truma Adapter Screw Union

The Truma Adapter Screw Union is a genuine gas connection fitting used in Truma heating and gas systems fitted to caravans, campervans and motorhomes. This adapter union provides a secure threaded connection between gas components, ensuring safe and reliable gas flow within the heater or gas supply system.

It is commonly used when connecting Truma heater gas lines, valves or pipework, allowing different threaded fittings or pipe sizes to be joined correctly. Using the proper adapter union helps maintain the integrity of the gas system and ensures safe operation of Truma appliances. 

Why Choose This Spare Part

• Genuine Truma replacement fitting – designed for caravan and motorhome gas systems.

• Secure threaded gas connection – ensures safe gas flow between components.

• Compatible with Truma heater installations.

• Durable metal construction – suitable for gas appliance connections.

• Ideal for repairs or heater servicing.

Correct gas fittings are essential in caravan heating systems to maintain proper gas pressure and safe appliance operation.

Key Features

• Gas adapter screw union fitting

• Designed for Truma caravan and motorhome heaters

• Provides secure threaded connection between gas components

• Durable metal construction

• Suitable for gas pipe or heater connections

Technical Specifications

Where and How to Fit This Product

The Truma Adapter Screw Union is fitted within the gas supply line of the heating system, usually between the gas valve, pipework or heater connection point.

Installation Overview

1. Turn off the LPG gas supply and isolate the system.

2. Identify the section of gas pipe or heater connection where the adapter is required.

3. Thread the adapter screw union onto the existing gas fitting.

4. Connect the matching pipe or component to the other side of the union.

5. Tighten securely and perform a gas leak test before operating the heater.

Because this component forms part of the gas system, installation should be performed by a qualified gas technician or caravan service engineer.

What’s Included

• 1 × Truma Adapter Screw Union

(Gas pipework, heater components and seals are not included unless stated.)

Why Buy This Spare Part?

If you are repairing or modifying a caravan heating system, the Truma Adapter Screw Union provides a reliable way to connect gas components securely. Using a genuine Truma fitting ensures compatibility with existing heater systems and helps maintain the safe operation of LPG appliances in caravans and motorhomes.