UNDER RING FLANGE ADAPTOR FOR FL2
fls-u of Wema-System Tank Sensor Under / Inside Ring Mounting Adapter - for Threaded or Flanged
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Tank Sensor Under / Inside Ring Mounting Adapter

FLS-U | For Mounting Flanged Sensors | Use w/ FL-2WE for Threaded Sen

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Overview
Wema fuel senders include the SSS and SSL models which have a common SAE 5-hole pattern and typically mount with a gasket and screws; the model S3U which has a 1.25” BSP-threaded mount; and the S5U which has a 1.5” NPT threaded mount.

The FLS-U adapter in this entry will allow you to mount a Wema Flanged (SSS or SSL) Tank Sensor to your water, fuel, or waste tanks.
The stainless steel FLS-U Under Ring Adapter (for inside the tank) has threaded fastener holes in an SAE 5-hole pattern.
Can be used on plastic, metal, and fiberglass tanks.

The FLS-U Under Ring Adapter can also be used in conjunction with an FL-2WE Top Adapter to mount S3U BSP-threaded tank sensors in a tank hole with an existing 5-hole pattern.

To Install a Threaded Sensor:
• To retrofit a Threaded Tank Sensor, you will need the FL-2WE Top Adapter, which will match up with the existing threaded holes in your tank
• For a new Threaded Sensor installation, you will also need the FLS-U Under Adapter, which will provide the necessary threaded mounting holes

To Install a Flanged Sensor:
• To retrofit an SSS or SSL flanged tank sensor (which come with a gasket), you will not need an adapter, as your tank will already have the required threaded mounting holes
• For a new flanged sensor installation, you will need to use the FLS-U Under Adapter to provide the necessary threaded mounting holes

When mounting a sensor in tanks with a thin top Wema recommends using an FL-2 Flange Adapter together with an FLS-U Under-Ring Adapter to secure against leaks.
The hole pattern on the FLS-U fits the 5 inner holes on the FL-2.
 
 
 
 
 
 
 

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