Water Tank Level Switch

A water tank level switch does one job: tell the wider system when the water level has reached a point that needs an action. Pump on, pump off, alarm, refill, or cut-off. On industrial and fire protection tanks, getting this wrong has real consequences, from lost water and failed compliance through to pumps running dry or a sprinkler tank showing as compliant when it’s actually empty. Franklin Hodge can supply level control switches as part of the tank package, specified to match both the application and the control system they integrate with.

Can Franklin Hodge Tanks Be Supplied with Level Control Switches? 

Yes, Franklin Hodge tanks can be supplied with level control switches as part of the wider tank control set. These integrate with your site’s pump control, monitoring, and alarm systems, so the tank isn’t just a storage vessel but a fully instrumented part of the wider installation. 

The specific switch type depends on what the tank is doing. Fire protection tanks typically use low level switches to flag when the water reserve has dropped below operational minimum. Drinking water tanks often run with both high and low level float switches to control inlet fill and prevent both overflow and dry-out. Process water and industrial storage applications are configured based on the control strategy of the wider system.

Types of Water Tank Level Switches

Level switches come in several configurations, each suited to a different control requirement: 

• Low level switches trigger when water drops below a minimum threshold, typically used to protect pumps, flag fire compliance issues, or initiate refill 

• High level float switches trigger when water reaches a maximum threshold, used to cut inlet flow and prevent overflow 

• High and low level float switches combine both functions in a single assembly, commonly specified on drinking water and process applications 

• Float level switches use a buoyant float to operate a mechanical switch, reliable and cost-effective for most tank control applications 

Each option is specified based on the tank application, the nature of the stored liquid, and the control system it reports to.

Where Level Switches Are Used

Level switches are standard across most Franklin Hodge tank installations, including: 

• Fire protection tanks requiring compliance monitoring of minimum water reserves 

• Drinking water tanks controlling automatic fill and preventing overflow 

• Waste and effluent tanks managing collection cycles and scheduled emptying 

• Temporary and emergency water storage installations that need remote level monitoring during short-term deployments 

• Process water and industrial tanks integrated with production-line pump control 

Level Switches Within the Broader Control Set

A water tank level switch is one of several control components supplied with a Franklin Hodge tank. Related components include inlet control ball float valves, contents gauges, drain valves, and overflow fittings. Supplying them together means each element is compatible with the next, rather than a patchwork of parts sourced separately. For existing tanks, replacement switches are available through our spare parts service, and complete control system upgrades can be specified as part of our tank refurbishment services.

Speak to Franklin Hodge About Water Tank Level Switches

If you’re specifying controls for a new tank or retrofitting level monitoring onto an existing Franklin Hodge system, our engineering team can confirm the right switch configuration for your application. We’ve been manufacturing water tanks in the UK for over 50 years, and we’ve specified the controls for everything from single-switch fire reserves through to fully instrumented multi-tank process installations. Contact us and a member of our team will get back to you.

Frequently Asked Questions 

Can Franklin Hodge supply tanks with level control switches?  

Yes, we supply level control switches as part of the wider tank control set, specified to match your application. 

What type of level switch is used on fire protection tanks?  

Low level switches are typically specified on fire protection tanks to flag when stored water has dropped below operational minimum. 

Are high and low level float switches available?  

Yes, combined high and low level float switches can be specified on any Franklin Hodge tank where both inlet cut-off and minimum reserve alerts are needed. 

Do level switches integrate with existing pump control systems?  

Yes, our level switches are selected to integrate with your site’s pump control, alarm, and monitoring systems. 

Can replacement level switches be supplied for existing Franklin Hodge tanks?  

Yes, replacement level switches are available through our spare parts service for any existing Franklin Hodge installation.