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Products

Hydrants

Usage Areas
It is used in water extinguishing systems of factories, warehouses, buildings and industrial plants and also for the purpose of water supply to fire-fighters in addition to direct intervention during fires in cities and counties.

Structure
It is comprised of cast iron frame manufactured in accordance with TS 2821 / 1a, on-off handle (valve), shaft controlling the valve, automatic discharge equipment (check valve) and hose connection fittings.

Operation principle
When on-off disc is rotated in the direction of opening with special hydrant key it moves motion tube downward. Thus, valve is separated from site and hydrant is opened. When on-off disc is rotated in the direction of closing hydrant is shut off with this reverse action. Shut off is in direction of upward flow. Because valve is under effect of water pressure coming from mains perfect sealing is ensured.

Specifications
- Flow cross-section of hydrants is constant and it doesn’t cause turbulence and ensures a linear flow thanks to flaps on the valve. Thus, it eliminates shock effects and hoses are used comfortably.
- When hydrant is closed after use, excess water remained in the body is discharged from hydrant through automatic discharge system in the form of check valve. In this way hydrant is protected against freezing.
- Because Fire Hydrant is shut off in flow direction no pumping occurs. In hydrants contrary to shut off direction pumping occurs before valve is placed to site towards the end of said shut off movement and shut off of hydrant becomes difficult and even it remain open.
-While hydrant is in open position flap-shaped valve locates on the bottom of lower body and supports the shaft and thus no vibration may occur because shaft is in bearing from top and bottom. Because shaft does not vibrate the housing where it is located is not deformed and hydrant lasts longer.

During fire it is assumed that 3 hydrants is used normally (maximum 4) and fire extinguishing time is considered to be 3-15 minutes.

Placement and Assembly
1) It is necessary to place sufficient quantity of hydrants to exteriors of buildings which should be protected and two hoses must be connected from the same place. Distance between hydrants,
HIGH DANGER 50 meters
MEDIUM DANGER 75 meters
LOW DANGER 150 meters
2) Distance of hydrants from the building should not be less than 5 meters and more than 15 meters
3) Hydrants should be placed on flat stones or concrete floor and vicinity of automatic discharge equipment should be surrounded by small stones, gravels, etc.
4) In placement of hydrant, center of hose connection fittings should be not less than 630 mm from the ground.
5) If the piping is newly installed pipes must be thoroughly cleaned before delivering water to hydrants

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