SAFTEY DEVICES
- Backflow Prevention
A backflow preventer is a device that’s installed on water pipes that allows water to flow in one direction but never in the opposite direction. Its sole job is to prevent potable/drinking water from being contaminated (by water which may be obtained from sources like boreholes, rainwater, and recycled grey water), due to a backflow which is typically caused by pressure changes to the supply network.
SYR’s various Backflow Preventer types cover all possible applications, and with the major benefit that they already fulfill the high safety requirements laid out in the European EN 1717 standards.
Depending on the requirements, SYR Backflow Preventers are available with or without maintenance
stop valves, for flow rates capacities from DN 15 to DN 50 and fluids of different risk categories.
The Backflow Preventer type BA is designed for fluids up to and including class 4 risks and the CA type up to and including fluid category 3. Both are based on a three-pressure-zones system composed of an upstream, intermediate and downstream pressure zone and have an integral strainer. (links to data sheets)
- Pressure Regulation for Industrial use
SYR offers an extensive range on various pressure reducing valve types.
- “315” range is predominantly used in the drinking water supply and. Under consideration of its specifications, it also protects industrial and commercial installations against excess supply pressure. This pressure reducing valve type protects water-supplying installations.
It compensates and optimizes upstream pressure variations and therefore it effectively prevents damages that can be caused by pressure increase. Furthermore, it economically and ecologically reduces the water consumption. The pressure reducing valve type 315 is equipped with an outlet pressure indicator that displays the set pressure. As a result, an additional pressure gauge is not necessary. The spring cap is rotatable by 360°, so that the pressure indicator is always visible.
Valve diameters from 15mm up to 50mm
The type 315 meets the highest European acoustic protection requirements and fulfils the requirements of the European Standard EN 1567.
- “6247” range of Pressure Reducing Valve with flange connection, protects industrial and commercial installations against excess supply pressure. It is predominantly used in the drinking water supply as it protects water-supplying installations.
It compensates and optimizes upstream pressure variations and therefore effectively prevents damages that can be caused by pressure increase.
The pressure reducing valve with flange connection type 6247 is equipped with one pressure reducer cartridge and designed with a flange connection. The pressure reducer cartridge is equipped with a spring-relieved single-seat valve and a coaxially positioned strainer.
The operational parts of the system are placed in a cartridge; this complete unit can be exchanged without disassembling the whole valve and without using special tools; the outlet pressure setting remains unchanged. The special cartridge design allows any mounting position. The pressure reducing valve with flange connection type 6247 is also equipped with connection facilities for upstream or downstream pressure gauges.
Valve diameters from 65mm, 80mm and 100mm.
This range fulfils the requirements of the European Standard EN 1567.
- The SYR pressure regulating valve type 6203 is used to regulate the pressure in industrial installations and apparatuses with media in accordance with the given specifications. As proportionally working pressure regulating valve, it prevents an excessive pressure increase in the system located upstream by opening in proportion to the rising pressure. The design of the pressure regulating valve type 6203 allows to install it in drain or return pipes of longer size where back pressures can occur.
Valve diameters from 15mm up to 32mm
- Valves for potable water heaters
This following ranges are exclusively available from OEM geyser manufacturers.
- Temperature and Pressure Safety valves
- Pressure control valves
- Vacuum Breakers
Drain cocks