Choosing the right MULTITUBE flap valve model

First of all, we make sure that:

You want to protect a network that is not subject to more than 1 bar of back pressure.

You want a stand-alone device that opens and closes automatically.

Then we choose depending on the parameters of your application:

• Your device needs to be installed in the middle of a network:

Opt for the MULTI non-return valve for connection on all types of pipeline with the NORHAM Flexible couplings, available from ND 250 to ND 500.

• You want to fit the protection system directly at the end of the pipeline,

Choose the MULTI N flap valve for connection on any type of material with our sleeves from NORHAM Flexible couplings, available from ND 200 to ND 600.

Choose the MULTI NB flap valve if you need to mount it on a wall or on a pipeline flange, available from ND 200 to ND 1500.

For ND < 200 see the ECO-FLAP^® Nozzle and Flange range.

NOTE FOR GENERAL LOCATIONS

Flap valves should be fixed so as to avoid the accumulation of debris around the invert which could prevent the valve operating correctly.