3/4" DT-040 Micro Barak Air Valve ARI

5DT40-50BTPP-001_0.75
ex Shipping kg
    Delivery time:6-10 Days
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DT-040-50,COMBINATION AIR VALVE "MICRO BARAK" 3/4"

The DT-040 LP Combination Air Valve is designed to prevent disturbances caused by presence or absence of air in small water supply systems. The combination air valve combines an air & vacuum large orifice and an automatic small orifice in one single body.

It is the outcome of development, based on many years of experience, resulting in the production of this revolutionary valve. The combination air valve discharges air during the filling of the system and admits air while draining and at water column separation. It also releases accumulated air from the system while the system is operating under pressure.

Product technical leaflet

Micro "BARAK" for Low Pressure

Combination Air Valve With Orifice Shut-off Valve

Description

The DT-040 LP Combination Air Valve is designed to prevent

disturbances caused by presence or absence of air in small water

supply systems.

The combination air valve combines an air & vacuum large orifice

and an automatic small orifice in one single body. It is the outcome

of development, based on many years of experience, resulting in the

production of this revolutionary valve.

The combination air valve discharges air during the filling of

the system and admits air while draining and at water column

separation.

It also releases accumulated air from the system while the system is

operating under pressure.

 

Applications

Low pressure systems.

Operation

The air & vacuum component, with the large orifice, discharges air

at high flow rates during the filling of the system and admits

air into the system at high flow rates during its drainage and at water

column separation.

High velocity air will not blow the float shut. Water will lift the

float, which seals the valve.

At any time during system operation, should internal pressure of the

system fall below atmospheric pressure, air will enter the system.

The smooth discharge of air reduces pressure surges and other

destructive phenomena.

The intake of air in response to negative pressure protects the system

from destructive vacuum conditions and prevents damage caused

by water column separation. Air entry is essential to efficiently drain

the system.

The air release component releases entrapped air in pressurized

systems.

Without air valves, pockets of accumulated air may cause the

following hydraulic disturbances:

- Restriction of effective flow due to a throttling effect as would a

partially closed valve. In extreme cases this will cause complete flow

stoppage.

- Obstruction of efficient hydraulic transmission due to air flow

disturbances.

- Accelerate cavitation damages.

- Pressure transients and surges.

- Corrosion in pipes, fittings and accessories.

- Danger of a high-energy burst of compressed air.

- Inaccuracies in flow metering.

As the system starts to fill, the valve functions according to the

following stages:

1. Entrapped air in the pipeline is discharged by the valve.

2. Liquid enters the valve, lifting the float which pushes the sealing

mechanism to its sealing position.

3. Entrapped air, which accumulates at peaks and along the system,

rises to the top of the valve, which in turn displaces the liquid in the

valve’s body.

4. The float descends, unsealing the rolling seal. The air release

orifice opens and the accumulated air is released.

5. Liquid enters into the valve and the float rises, pushing the rolling

seal back to its sealing position.

When internal pressure falls below atmospheric pressure

(negative pressure):

1. The float will immediately drop down, opening the air & vacuum

and air release orifices.

2. Air will enter the system.

Main Features

-Working pressure range: 0.05 - 6 bar.

-Testing pressure: 10 bar.

-Working Temperature: 600 C.

-Materials: The air valve is made of corrosive-resistant composite

materials.

-2 IN 1 - two sets of orifices.

-Integral orifice shut-off valve: an innovative built- in shut off valve

enables the closure of the air valve orifices with no interference to

water flow in the pipe.

- The large orifice with its self-cleaning mechanism dramatically

reduces obstruction due to debris.

-Discharge outlet: enables for the connection of a 10mm

polyethylene discharge tube..

- Dynamic design allows high velocity air discharge and preventing

premature closure.

-Lightweight and small - 144 gr.

-The most compact air valve in the market.

-No maintenance.

-Seals at very low pressure.

Valve Selection

- Connections: Threaded 1/2", 3/4" BSPT / NPT.

- Optional model DT-040 (max. working pressure 10 bar)

- One-way air flow option.

Upon ordering, please specify: model, size, working pressure,

threads standard and type of liquid.