New range of local zone valves
March 2018, Products, 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.
- Advances in NVR and VMS capabilities
July 2018, Technews Publishing, This Week's Editor's Pick, CCTV, Surveillance & Remote Monitoring, IT infrastructure, Products
Hi-Tech Security Solutions looks at what the latest trends are in the NVR and VMS worlds, along with some of the latest products.
- Expanding machine vision
July 2018, Zhejiang Dahua Technology, Products, CCTV, Surveillance & Remote Monitoring
Dahua has unveiled a series of new industrial cameras to enhance its product offering for the logistics industry and general industry automation.
- Wireless transportable multi-gas detectors
July 2018, Spero Sensors & Instruments, Industrial (Industry), Fire & Safety, Products
Sperosens reduces the complications of gas detection by supplying the Oldham range of wireless multi-gas solutions, with a focus on maximising performance, quality and reliability.
- Thermal fire prevention
July 2018, FLIR Systems, Fire & Safety, CCTV, Surveillance & Remote Monitoring, Products
Early warning of fire via FLIR thermal cameras prevents huge losses for energy company.
- Under-vehicle inspection system
July 2018, ZKTeco, Products, Access Control & Identity Management
The ZK-VSCN100 is a portable under-vehicle inspection system. When a vehicle passes over it, the system can quickly recognise the vehicle licence plate and generate a high definition image of the undercarriage, ...
- Cooling criminal cravings
July 2018, Technews Publishing, Security Services & Risk Management, Products
Water can be all you need to buy yourself the time to get to safety. Roteck has a number of products designed to use liquid to douse the criminal intent.
- Hytera introduces new PD485 DMR handset
July 2018, Security Services & Risk Management, Products
Hytera has introduced the new PD485 to complement the existing PD405 and PD415 DMR handsets.
- Solar powered light with PIR
July 2018, Mimic Components, Products
Mimic Components has released an all-in-one, low energy solar light, available in 24 W or 48 W.
- Intelligent step to reducing crime
July 2018, Asset Management, EAS, RFID, Security Services & Risk Management, Products
The Intelligent Safe incorporates the latest security technology and is fully engineered to offer an all-round solution that’s both protective and reactive.
- UTC launches TruVision thermal camera range
July 2018, UTC Fire & Security, CCTV, Surveillance & Remote Monitoring, Products
UTC launched the TruVision range of thermal cameras, consisting of four bullet camera models in different resolution and lens variants, all featuring on-board analytics.
- The data explosion has just begun
July 2018, Seagate Technology, IT infrastructure, Integrated Solutions, Products
Data generated globally will grow to 163 zettabytes (ZB) in 2025; 163 ZB is like watching the entire Netflix catalogue 489 million times.
- AxxonSoft launches IMC
July 2018, CCTV, Surveillance & Remote Monitoring, Products
AxxonSoft used its platform at Securex SA to launch the Incident Management Centre (IMC) in South Africa.