Lufteventil D-040 PN16 - 1 1/2 toms innvendig. - GI BUD

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D-040 Water Supply PN 16

D-040-C PN 16

Combination Air Valve

Description

The D-040 series Combination Air Valve has the features of both an

air release valve and an air & vacuum valve.

The air release component is designed to automatically release small

pockets of air to the atmosphere as they accumulate along a pipeline

or piping system when it is full and operating under pressure.

The air & vacuum component is designed to automatically

discharge or admit large volumes of air during the filling or draining

of a pipeline or piping system. This valve will open to relieve

negative pressures whenever water column separation occurs.

Applications

- Pump stations: after the pump and after the check valve.

- Downstream (after) and upstream (before) of shut-off valves.

- After deep-well pumps.

- On long constant-sloped pipeline segments.

- At peaks along the pipeline and at peaks relative to hydraulic

gradient.

- At end lines.

- Before water meters.

- On strainers and filters.

D-040-C - additional applications

- Water pipelines vulnerable to vandalism and/or water theft.

- Water systems found in remote areas.

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 reduction of the flow area. In

extreme cases this will cause complete flow stoppage.

- Obstruction of efficient hydraulic transmission due to air flow

disturbances.

- Acceleration of cavitation damages.

- Increase in pressure transients and surges.

- Internal corrosion of pipes, fittings and accessories.

- Dangerous high-energy bursts of compressed air.

- Inaccuracies in flow metering.

As the system fills and is pressurized, the combination air valve

functions in the following stages:

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

2. Liquid enters the air 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 air valve, which in turn displaces the liquid in

the air valve body.

4. The float drops down, unsealing the rolling seal. The air release

orifice opens and the accumulated air is released.

5. Liquid enters the air release valve, the float rises pushing the

rolling seal to its sealing position.

When internal pressure falls below atmospheric pressure

(negative pressure):

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

and air release orifices.

2. Air will enter into the system

Main Features

- Working pressure range: 0.2 - 16 bar

- Testing pressure: 25 bar.

- Maximum working temperature: 60° C.

- Maximum intermittent temperature: 90° C.

- Reliable operation reduces water hammer incidents.

- Dynamic design allows for high capacity air discharge while

preventing premature closure.

- Lightweight, small dimensions, simple and reliable structure.

- The discharge outlet enables the connection of a vent/drain pipe.

- The large size of the automatic air release orifice relative to the air

valve body:

• Discharges air at high flow rates.

• Lessens the danger of its obstruction by debris.

D040.WTR.CAT.ENG07

• Enables the usage of the rolling seal mechanism, making it less

sensitive to pressure differential than a direct float seal.

- The body is made of high-strength composite materials and all

operating parts are made of specially selected, corrosion- resistant

materials.

- Due to its light weight, the valve may be installed on plastic piping

systems, as well as other lightweight piping systems.

- D-040-C the body is protected in a metal shell for anti-vandalism/

theft applications. The metal shell is coated internally and externally

with Epoxy coating min.250 micron thickness, suitable for

drinking water.

Valve Selection

The air valve is available with:

- Wide size range: 1/2”, 3/4”, 1”, 2” threaded male connections,

NPT or BSPT.

- Optional ball valve tap; BSPT or NPT male connection.

Options

- The D-040 air valve is available in the following options:

• D-040 1”& 2” - reinforced nylon body and base

• D-040 B 1”& 2” -reinforced nylon body and brass base

• D-040 C 1”& 2” - ductile iron shell and base (1”base - brass)

• D-040 ST. - reinforced nylon body and stainless steel base

• D-040 ST ST - stainless steel body and stainless steel base

- D-040 LP air valve is designed for very low pressure systems with a

maximum working pressure of PN 6

- DG-10 air valve is designed for low pressure systems with a

maximum working pressure of PN10

- D-040 HT air valve (rated PN10) is designed for hot water

systems with a maximum working temperature of 90°C.

Note

For best suitability, it is recommended to send the fluid chemical

properties along with the valve request.

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

and flange standard and type of liquid.

D-040

ACCESSORIES

Ball Valve

Shut-off valve: Made of brass ATSM B-124

Suitable for: D-040 1” 2”

D-040-C 1” 2”

Flanges

Made of Reinforced Nylon / Cast Ductile / ST. 37

Suitable for: D-040 1” 2”

D-040-C 1” 2”

Diameter 40/50/60 Internal threads: 3/4”, 1”, 2”

Diameter 40/50/65 Internal threads: 3/4” 1” 2”

Diameter 50mm Internal threads: 1” 2”

Diameter 80mm Internal threads: 2” 3”

Thermal Protection Jacket

Made of polyurethane

Extension

Available with extended pipe.

One-way models

The D-040 series air valve is available as:

D040-V With a one-way, out-only attachment, allows air discharge

only, prevents air intake (all models).

D-040-I With a vacuum breaker, in-only attachment, allows air

intake only, not allowing air discharge (D-040 2” only).

D-040-NS With a non-slam, discharge-throttling attachment, allows full air intake, throttles air discharge (D-040 2” only).

D-040 P T 2”

D-040 P T 1”

D-040-C T 2”

D-040-C T 1”

D-040-NS 2”

D-040

D-040 Non-Slam Single Orifice Add-on Component Data Table

Model Nominal

Size

Discharge

orifice

Total NS

area

NS orifice Switching

point

Flow at

0.4 bar

D-040 NS 2” (50mm) 37.5 mm 12.6 mm2 4 mm Spring loaded

normally closed

17.5 m3

/h

D-040

PARTS LIST AND SPECIFICATION

No. Part Material

D-040 / B / ST

Material

D-040 ST ST

1. Body Reinforced Nylon Stainless Steel 316

2. Discharge Outlet Polypropylene Polypropylene

3. 1/2” 3/4” 1” Rolling Seal EPDM Viton / BUNA-N / EPDM

2” Rolling Seal assembly:

3a. Screws Stainless Steel Stainless Steel

3b. Plug Cover Reinforced Nylon Polypropylene /Reinforced Nylon

3c. Rolling Seal EPDM Viton / BUNA-N / EPDM

3d. Plug Reinforced Nylon Polypropylene / Reinforced Nylon

4. Clamping Stem Reinforced Nylon Polypropylene / Reinforced Nylon

5. Float Foamed Polypropylene Foamed Polypropylene

6. O-Ring BUNA-N BUNA-N

7. Base Reinforced Nylon

/ Brass

/ Stainless Steel 316

Stainless Steel 316

Optional Ball Valve Brass Nickel plated

D-040 1" D-040 2" D-040 B 2" D-040 ST 2" D-040 ST ST 1" D-040 ST ST 2"

5

4

3 1 2

6

7

A

B

C

5

4

3

2

1

6

7

A

B

C

3c 3b 3a

3d

DIMENSIONS AND WEIGHTS

Model Dimensions mm Connection Weight Orifice Area mm2

A B C Kg. Auto. A / V

1/2” 3/4” 1”

D-040 100 143 3/8” BSP Female 0.33 7.8 100

D-040 B 100 143 3/8” BSP Female 0.70 7.8 100

D-040 ST 100 143 3/8” BSP Female 0.65 7.8 100

D-040 ST ST 94 139 3/8” BSP Female 1.00 7.8 100

2”

D-040 P 183 215 1½” BSP Female 1.10 12 804

D-040 B 183 215 1½” BSP Female 1.80 12 804

D-040 ST 183 215 1½” BSP Female 2.10 12 804

D-040 ST ST 183 215 1½” BSP Female 3.10 12 804

* All product weights are approximate due to the differences in flange standards and

variable accessories

D-040-C

PARTS LIST AND SPECIFICATION

N0. Part Material

1. Shell Ductile Iron

2. Body Reinforced Nylon

3. 1/2” 3/4” 1” Rolling Seal EPDM

3. 2” Rolling Seal Assembly

3a. Screws Stainless Steel

3b. Plug Cover Reinforced Nylon

3c. Rolling Seal EPDM

3d. Plug Reinforced Nylon

4. Discharge Outlet Polypropylene

5. Clamping Stem Reinforced Nylon

6. Float Foamed Polypropylene

7. O - Ring BUNA-N

8. Base 1/2” 3/4” 1” Brass

2” Ductile Iron

9. Bolt & Nut (x4) Steel Zinc Cobalt Coated

Optional Ball Valve Brass, Nickel plated

5

3 2 1 4

6

7

8

9

1

2

3

5

6

7

8

4

D-040-C 1" D-040-C 2" D-040-C F 2"

8

3c 3b 3a

3d

DIMENSIONS AND WEIGHTS

Model Dimensions mm Connection Weight Orifice Area mm2

A B C Kg. Auto. A / V

1/2” 3/4” 1”

D-040-C 125 150 3/8” BSP Female 1.2 5 82

2”

D-040-C 203 230 1½” BSP Female 5.4 12 804

D-040-C F 214 230 1½” BSP Female 7.3 12 804