Upgrade Options & Accessories

The FlapstopperTM is available with several upgrade options, that include automation, monitoring and control.

For the FlapstopperTM to be most effective it needs to be available 24/7/365. If a site is un-manned at night and the FlapstopperTM is there to contain Firewater, than out of hours activation can be automated from a Fire Alarm or detection system. Similarly for spills or leaks from storage tanks, again out of hours detection and activation can be provided.


Sensor Options Include:

  • Water level / Flood
  • Turbidity
  • PH
  • Temperature
  • Salinity
  • High Oil Level / Oil Spill
  • Dissolved Oxygen
  • Discoloration

With automation we always recommend this is backed up with remote monitoring as if the system is triggered a response will be required, in particular during heavy rainfall as flooding may occur.


Control Options

  • Call Point Operation
  • BMS Operation
  • Panic Buttons
  • Manual Controls


Power Supply Options

  • Mains
  • Solar

Solar Power – Net Zero FlapstopperTM Operation

The FlapstopperTM with its low weight design and its ultra-low power control panel can be powered form the sun.


Providing the unit is located in an area that attracts the sun, reliable solar operation is viable all year round in all parts of the UK.


Depending on the type of control panel mounting, we offer control panels that are either pole mounted or integral within a control kiosk.


The alternative if trees block the sky or there is a threat of vandalism is to mount the panels on a pole.

Call Point Activation

To enhance safety and to keep operatives out of a hazardous area, the FlapstopperTM can be triggered remotely using a Radio Data Networks RDNET1000 Wireless Call Point.


These Call Points are widely used, battery powered for ease of installation. Being waterproof, they can be mounted inside and outside sheltered locations. For harsh locations or exposed area there is also a version with a stainless-steel protective cowling to increase the protection from the elements plus to provide impact protection too.


At night or if there is a power failure the Call Point includes a bright pilot LED which blinks and enables them to be located in total darkness. Once activated the LED colour changes to red so the activated call point can be spotted.


There is also a flap that protects the buttons form curious fingers, and the temptation of “just pressing to see what happens”.


Signals from the Call Points can also be routed to the sites BMS System via a Radio Data Networks Data Networks Gateway to inform the site that the Call Point has been activated.


Multiple Call Points, mounted in different locations, can also be used to trigger a single or multiple FlapstopperTM on a site, thanks to RDN’s use of a 4-billion code combination address system.


Call Points are available in green for PCD and red for Firewater control applications respectively.

Fire Alarm Activation

There are two methods by which the FlapstopperTM  activation can be automated in the event of a fire: via a contact form the Alarm System or acoustically.


With direct activation, an auxiliary volt-free relay contact from the Fire Alarm panel is used to trigger the FlapstopperTM  control panel to close. The system can be configured to provide operation from a normally open or normally closed contact. To prevent activation during Fire Alarm testing an isolation switch or time delay relay can also be provided. This may be installed at the Fire Panel or within the FlapstopperTM.


If cabling is restrictive our partners Radio Data Networks can supply a robust Radio Telemetry Link from between the Fire Alarm panel and the FlapstopperTM


With acoustic activation, subject to site survey, an acoustic sensor and controller is mounted adjacent to one of the alarm systems sounders. The sensor is tuned to the sound of the alarm and a time delay included to generate a trigger upon sustained activation of the alarm.

Fire Alarm Activation

Oil Interceptor oil Spill Activation

It is common for FlapstopperTM  to be used as a tertiary spill containment device behind oil interceptors to contain catastrophic / high volume spills.


Activation of the high oil alarm can be used to trigger the FlapstopperTM control panel. The FlapstopperTM is compatible with all industry leading brands of oil interceptor alarm providing they have an auxiliary volt-free contact output for activation.


Where there is a distance between the oil interceptor and the control panel Radio Data Networks manufacture a wireless oil interceptor alarm system, that permits the status of oil interceptor probes to be relayed wirelessly, both to the control panel and also to the sites BMS system.

PH Sensor Activation

If a site handles acids or alkalis the FlapstopperTM  be triggered from the output of a PH sensor to capture spills automatically or leaks from stored containers.


With PH sensors due to the need for frequent maintenance we always recommend that a isolator is used to enable false triggering of the FlapstopperTM during servicing.

PH Sensor Activation

Turbidity Sensor Activation

If a site has statutory EA, SEPA or NRW imposed limits on the turbidity of its discharges the FlapstopperTM  be triggered from a turbidity meter, to hold back the flow until the discharge settles.


Typical applications include mine waters which are rich in ochre, a pollution that can turn rivers red.


With turbidity sensors due to the need for frequent maintenance we always recommend that a isolator is used to enable false triggering of the FlapstopperTM during servicing.

Turbidity Sensor Activation