Bellcheck
In order to comply with the requirements of the above code standards and the requirements of an insurers policy conditions, a routine weekly test on each automatic wet alarm valve set is a mandatory requirement for a sprinkler system.
Having due regard for this fact, Projectfire Products developed BELLCHECK® TO SAVE THIS WASTE WATER. The only water used with the BELLCHECK® system is the operational discharge when the alarm gong
activates and results in the usage of approximately 25 litres of water per valve set per test. This represents a saving of 31.460 Litres of water per valve set each year.
The testing is as stated above a mandatory requirement and involves the discharge of large quantities of water - approximately 630 Litres per valve set for each test carried out.
From figures available, we have calculated that approximately 1.3 billion litres of water per anum are discharged through using traditional methods. This figure is rising year on year at a rate of approximately 30%. (Figures relate to UK mainland only installed sprinkler systems).
Bellcheck ® is a factory assembled unit, in a choice of three arrangements, namely -
- A Stand Alone Valve Set
- A Single Valve Set with By-Pass
- Duplicate Valve Set.
These simple, easy to install units means that you have no on-site build, no time consuming and labour intensive work - you just simply install and connect.
Bellcheck ® System Advantages
- MASSIVE WATER SAVINGS
- INSTALLED AND OPERATING IN MINUTES
- FACILITY TO ELIMINATE FALSE ALARMS
- SINGLE KEY TURN OPERATION
- HIGH QUALITY FACTORY ASSEMBLED & TESTED
- FULLY MODULAR UNITS
- REDUCES OVERALL INSTALLATION TIME
- SUPPLIED WITH CAD DRAWINGS & O&M MANUALS
Alarm Valve Stations :
- Factory Assembled & Tested
- Made to High Quality Standard
- Delivered to Site at point of fixing
- Complete with pre-wired Bellcheck®
- Plug and Play principle
- Test and Drain Lines incorporated
FUNCTIONAL PRINCIPAL
General Alarm Valve operating Principles:
Bellcheck ® products incorporate a fully trimmed alarm valve. The alarm valve system is designed to activate an alarm when a sprinkler head in the system discharges water.
General Bellcheck ® System Operating Principles:
In the event of a fire, the sprinkler head that operates, would allow water to escape from the system. As the water escapes, the Clap in the alarm valve is no longer forced down and lifts. This allows water to flow and operate the alarm gong.
The flow and pressure switches act as a further means of sounding the alarm and provide an electric signal to an alarm panel as they detect increases in water flow and pressure respectively.
The Bellcheck ® system tests all three of the above systems, by simulating the flow of one sprinkler head in operation. It works by pumping water from the chamber above the alarm valve, to the chamber below the alarm valve. The pressure under the clap increases, causing it to lift. This activates the motor alarm, the pressure switch and the flow switch.
This simple and easy test is executed by turning the key on the Bellcheck® control Panel.
When this test is carried out, sufficient water needs to be drawn of, which would simulate at least one sprinkler head in operation.
The wet alarm valve testing procedure involves the opening of a 15 mm test valve to drop the pressure above the alarm valve clapper to the same or lower pressure below the clapper which causes the clapper to lift and activates the alarm.
