New range of local zone valves

1 March 2018 Products & Solutions, Fire & Safety

Fire and Security Techniques of Centurion has introduced the Fire-Eater ZSV-25 Local Zone Valve for use in systems where multiple zones are protected by one cylinder bank. Zone valves control the flow of water or steam in a hydronic heating or cooling system in order to boost system efficiency.

Fire and Security Techniques CEO, Neil Hughes explains that the valve acts as a selector valve, directing the gas to the correct zone. Controlled electrically, the valve is used to control the flow of Inergen fire-extinguishing agent. Made of brass and stainless steel, the ZSV-25 weighs 2.3 kg, with a 62 mm diameter, and measuring 135 mm by 155 mm.

“The valve uses system pressure to operate the valve mechanism. When the solenoid is powered, the system pressure will force the valve open until the system pressure drops below 0.2 MPa, when it closes automatically,” Hughes explains.

The valve must be pressurised on the inlet in order to be able to function properly. The valve’s state can be monitored electrically when it is open and pressurised. Monitoring with additional equipment is also possible via the 3.5 mm activation ports.

The pneumatic activation chamber is designed with a small leakage to protect the valve from unwanted activation caused by small leakages into the activation chamber. Once the valve is open, it remains so until the system pressure has dropped below 2 bar. It closes automatically after discharge.

Hughes highlights that using a main and reserve bank with a sequence of zone valves, the system can discharge Inergen agent into the desired area, and thereby extinguish any fire. Following this, the system will reset automatically, with the reserve bank cylinders now on standby, in order to protect all the affected areas from fire damage.

“This process will also allow for cylinders to be removed and refilled without any system redundancies occurring,” Hughes concludes.





Share this article:
Share via emailShare via LinkedInPrint this page



Further reading:

Eight MP dome for harsh environments
Axis Communications SA Surveillance Products & Solutions
Axis Communications announced a marine-grade stainless steel camera that offers performance in harsh environments. Enclosed in an electropolished stainless steel casing, it can withstand the corrosive effects of seawater and cleaning chemicals.

Read more...
Save energy with Paxton’s Net2 Access Control
Paxton Power Management Products & Solutions
Paxton offers access control systems that can help save building energy by utilising smart features. This not only has a positive environmental impact but, importantly, helps save businesses money.

Read more...
Protecting our most vulnerable
NEC XON Access Control & Identity Management Products & Solutions
In a nation grappling with the distressing rise in child kidnappings, the need for innovative solutions to protect our infants has never been more critical. South Africa finds itself in the throes of a child abduction pandemic.

Read more...
International access manufacturer sets up shop in SA
Technews Publishing Access Control & Identity Management News & Events Products & Solutions
The South African security market can always use some good news, and this year, STid has obliged by formally entering the South African market, setting up its main office in the Boomgate Experience Centre in Roodepoort, Johannesburg.

Read more...
Beagle Watch adds fire to its portfolio
Editor's Choice Fire & Safety News & Events
Beagle Watch Armed Response and FIRE OPS SA announced the enhancement of the two companies' combined service offerings to provide professional fire safety services to Beagle Watch clients and Johannesburg residents.

Read more...
Hik-Connect for Teams released
Hikvision South Africa Products & Solutions Surveillance
Hikvision has released an update for its security management platform; Hik-Connect for Teams not only meets the specific needs of individual users, but also caters to various medium-sized businesses (SMBs) and multi-site management scenarios.

Read more...
Revolutionise your security with integrated solutions
Secutel Technologies Products & Solutions Surveillance
By merging the capabilities of SecuVue and Secutraq, Secutel has forged a robust system empowering users to fine-tune analytics and harness facial recognition, pose detection, and XFS, among other features.

Read more...
Effective access control
Flow Systems Access Control & Identity Management Products & Solutions
Flow Systems has introduced its new Extra Heavy Duty Industrial Rising Vehicle Barrier, which provides a high level of protection. It is a traditional-looking control barrier with the benefits of high-level physical protection.

Read more...
SafeQuip introduces lithium fire extinguishers
Fire & Safety Products & Solutions
With the use of Lithium batteries increasing in many types of portable devices and battery storage solutions, SafeQuip, in partnership with AVD Lithex, is introducing a fire extinguisher aimed at suppressing and extinguishing, and also preventing re-ignition of lithium fires.

Read more...
New generation of cyber-focused controllers
Gallagher News & Events Access Control & Identity Management Products & Solutions
The C7000 gives users an opportunity to leverage their hardware and firmware to build a platform designed to catapult their organisation into the future, with cybersecurity baked in from inception.

Read more...