CNG refuelling valves

Refuelling valves in CNG systems

CNG refuelling valves, as in the LPG system, make it possible to fill the vehicle's natural gas (CNG) tank. They are designed to operate at the higher pressure characteristic of CNG.

CNG refuelling valve functions

Enabling refuelling: The refuelling valve provides a connection between the dispenser gun and the CNG tank, enabling the tank to be filled with gas.

Tank sealing: The refuelling valve ensures a tight connection between the tank and the dispenser gun, preventing gas leakage.

Installation protection: The CNG refuelling valve is equipped with safety features such as:

Safety valve: Prevents overfilling of the tank.

Shut-off valve: Automatically cuts off the gas supply in the event of a fault or disconnection of the dispenser gun.

CNG refuelling valve types

There are several types of CNG refuelling valves, differing in mounting and type of connection:

NGV1 valves: Most commonly used in CNG installations, they allow the connection of the dispenser gun by means of a thread.

NGV2 valves: Less common, allow the connection of the dispensing nozzle by means of a quick coupling.

CNG refuelling valve assembly

The installation of the CNG refuelling valve should be carried out by a qualified gas fitter. The assembly includes:

Selection of a suitable valve: The valve must be matched to the type of CNG system and tank.

Fixing the valve to the tank: The valve is attached to the CNG tank using screws or other fasteners.

Connection of the valve to the gas installation: The valve is connected to the gas system by means of gas pipes.

Important remarks

CNG refuelling valves from reputable manufacturers should be used to ensure the safety and durability of the installation. In the ZAMEL Biała Podlaska offer you will find CNG refuelling valves of Italian manufacturers: Tomasetto and OMB.

Assembly of the CNG refuelling valve should be carried out in accordance with the manufacturer's instructions.

Regularly check the condition of the CNG refuelling valve for damage and leaks.