DeZURIK 140, 150 User Manual

BULLETIN 601

APCO AIR/VACUUM VALVES

APRIL 2013

Series 140

.5" (15 mm) - 3" (80 mm)

4" (100 mm) - 30" (750 mm)

Series 150

Air/Vacuum Valves

Guaranteed Protection

1. Protection for pipelines

2. Eliminating risk of collapsing the line due
to vacuum

3. Exhausts air when the line is filled

4. Allows air to re-enter immediately when
the line drains

Plus these exclusive features at no extra cost:

5. Stainless steel floats - Guaranteed
individually tested

6. ASTM quality materials guaranteed throughout

7. Every valve hydrostatically factory tested

Why and Where to Use
Air/Vacuum Valves

An Air/Vacuum Valve has a large venting orifice
and is used to exhaust large quantities of air from
a pipeline when being filled or a deep well pump
column when the pump is started*. Once the line
is filled, the Air/Vacuum Valve closes and remains
closed until the liquid is drained and pressure returns
to atmospheric. The Air/ Vacuum Valve will then
immediately open to allow air to re-enter the line
and prevent a vacuum from developing.

Air/Vacuum Valves do not open to exhaust the small
pockets of air which collect in the line while it is
operating under pressure. We highly recommend
Automatic Air Release Valves (AARV) be used in
conjunction with Air/Vacuum Valves for maximum
pipeline flow and pump efficiency. The AARV will
eliminate constricting air pockets from forming at the
high points of the pipeline.

Optional:
Mushroom Cap
with built-in
bug screen

Series 140

1

⁄2" (15 mm) through 3" (80 mm) outlets are NPT
thread. It is good practice to install a mushroom cap
into the threaded outlet for discharge protection.

The minimal cost for the Automatic Air Release
Valves will quickly pay for itself in minimizing head
loss through the pipeline. The result: energy cost
savings!

Series 140H available for high pressure service
specify operating pressure if below 20 psi (138 kpa).

*See bulletin 586 - Air Valves for Vertical Turbine Pumps

Manufactured to AWWA C-512

ISO flange connections available

© 2011 DeZURIK, Inc.

2

Series 150

4" (100 mm) through 30" (750 mm) standard outlets
are plain with a steel protector hood.

Optional threaded or flanged outlets available.

Physical Dimensions

Seat Detail

Air/Vacuum Valve

125 lb: 14" (350 mm) & larger

250 lb: all sizes

Proctector Hood

Air/Vacuum

Valve

Series

1100

DeZURIK
Butterfly
Valve with

Threaded
Retainer
Plate or
Spool Piece

Replace Shut-Off Valves with DeZURIK
Butterfly Valves

Costs to excavate pipeline trenches can be greatly
reduced by using DeZURIK Butterfly Valves for
isolation instead of gate valves. DeZURIK Butterfly
Valves are economical, reliable and much shorter,
permitting a reduction in depth of trench. See Below.

Hand Lever

Model Size Height

141

142

144

146

152

153

154

155

156

157

158

159

160

162

Inch
Millimeter

.5"157.063"

179

1"

25

50

100

150

200
10"

250
12"

300
14"

350
16"

400
18"

450
20"

500
24"

600

9"

2297"178

2"

12"
3059"229

3"8013.625"

346

4"

18.875"
479

6"

21.75"
552

8"

25"
635

27.375"
695

30.375"
772

30.75"
781

31.75"
806

43.5"
1105

48"

1219

58"

1473

Max.

Dia.

5.125"
130

9.438"
240

12"
305

16"
406

18"
457

20"
508

25"
635

29"
737

32"
813

34"
864

40"

1016

48"

1219

Inlet Outlet

.5" NPT

1" NPT

2" NPT

3" NPT or Flanged763" NPT

4" NPT or Flanged

102

6" Flanged

152

8" Flanged

203

10" Flanged

254

12" Flanged

305

14" Flanged

356

16" Flanged

406

18" Flanged

457

20" Flanged

508

24" Flanged

610

13

25

51

.5" NPT

1" NPT

2" NPT

4" Plain

6" Plain

8" Plain

10" Plain

12" Plain

14" Plain

16" Plain

18" Plain

20" Plain

24" Plain

13

25

51

76

102

152

203

254

305

356

406

457

508

610

Weight
Lbs/Kg

10

22
10

55
25

60
27

100

45

150

68

200

91

350
159

500
227

625
283

830
376

1100

499

1650

748

2600
1179

On sizes 4" (102 mm) and larger, the plain outlet comes with
a protector hood, as illustrated. However, threaded or flanged
outlets are available and recommended when valves are used
inside the pump house.

5

Size Model Combination A R X

4"

100

6"

150

8"

200
10"

250

* 12"

300

* 14"

350
16"

400

Inch
Millimeter

1104 152/904

1106 153/906

1108 154/908

1110 155/910

1112 156/912

1114 157/914

1116 158/916

21.5"
546

25.25"
641

29"
737

32"
813

39.75"

1010

40"

1016

42.75"

1086

9.5"
241

10.75"
2731"25

14.25"
362

14.5"
3682"51

15"

3815"127

16.75"
4255"127

17.75"
451

.938"

24

1.5"
38

1.438"
37

* Uses spool piece

Additional Air Valve Information Bulletin

Which Air Valve Should I Use? 610
Combination Air Valves 623
Air Valves for Vertical Turbine Pumps 586
Slow Closing Air and Vacuum Valves 613
Hydraulically Controlled Air/Vacuum Valves 7000

No. Required & Size

Studs Nuts

UNC ISO UNC ISO

8 - .625-11 x 6.5 8 - 16-2 x 165mm 16 - .625-11 16 - 16-2

8 - .75-10 x 8 8 - 20-2.5 x 203mm 16 - .75-10 16 - 18-2.5

8 - .75-10 x 9 8 - 20-2.5 x 229mm 16 - .75-10 16 - 18-2.5

12 - .875-9 x 10 12 - 20-2.5 x 254mm 24 - .875-9 24 - 20-2.5

12 - .875-9 x 8.5 12 - 20-2.5 x 216mm 24 - .875-9 24 - 20-2.5

12 - 1.0-8 x 9 12 - 24-3 x 229mm 24 - 1-8 24 - 24-3

16 - 1.0-8 x 11 16 - 24-3 x 279mm 32 - 1-8 32 - 24-3

3

Where to Install

Typical Pipeline Showing its Hydraulic Gradient and the Position
of Necessary APCO Air Valves.

APCO Combination Air Valve

at peaks and sharp change in gradient due to
possibility of column separation and vacuum

APCO Hydraulically Controlled Air/Vacuum Valve

where secondary surges due to rejoining of
previously separated water column could occur

APCO Air Release Valve

on long ascending stretch at
1/4 to 1/2 mile intervals

Pump

APCO Air/Vacuum Valve on pump discharge before check valve (not necessary for pumps with positive suction head).
APCO Hydraulically Controlled Air/Vacuum Valve where a discharge gate valve is normally closed during pump start-up to develop head.

or

Datum

APCO Hydraulically Controlled
Air/Vacuum Valve

where secondary surges due to rejoining of
previously separated water column could occur

APCO Combination Air Valve

at peaks and sharp change in gradient due to
possibility of column separation and vacuum

APCO Air Release Valve

on long horizontal and descending
stretch at 1/4 to 1/2 mile intervals

or

or

APCO Air/Vacuum Valve

at peaks and sharp change in gradient near end of
line where no significant amount of air is anticipated

Reservoir

or

Discharge

Air/Vacuum Valve

Air Release Valve

Combination Air Valve

Hydraulically Controlled
Air/Vacuum Valve

Performance Graphs For Air/Vacuum Valve

Air inflow/outflow thru valve in standard cubic feet of free air per second, (SCFS)

Inflow

Hydraulic Gradient

24" 20"18"16"14"12" 10" 8" 6" 4" 3" 2" 1"

Curves shown are actual flow capacities at 14.7
psi barometric pressure and 70°F temperature
based on actual test. These figures are not
merely flow capacities across the orifice, but flow
capacities across the entire valve. In the test set­up, air approach velocity is negligible, therefore
actual flow capacity exceeds the values shown
on chart.

1

2

3

4

5

1

"

⁄

2

Valve Size

6

Test conducted by:
Phillips Petroleum Company
Engineering Department - Test Division
Edmond Plant February 2, 1961

Southern Research Institute
Birmingham, Alabama May 8, 1959

Vacuum across valve in psi

Outflow

Valve Size

6

5

4

3

2

1

Press. diff. across valve in psi

0.2 0.3 0.4 0.60.8 1 2 3 4 5 6 7 810 20 30 4 0 50 100 200 300 5 00 1000 2000

1

"

⁄

2

4

Sizing Air/Vacuum Valves for Pipelines

General Explanation of Criteria Used

1. Calculate necessary valves independently for each high point on the line.

2. Consider the more severe of the two gradients adjacent to each high point.

3. Determine maximum rate of flow in cubic feet per second which can occur in this gradient during both
the filling and draining of the line. Always be sure to take the highest possible rate of flow under either
circumstance, draining or filling the pipeline.

To calculate rate of flow:

If line is being filled by a pump

Rate of flow CFS = GPM of pump

449

If the line is being drained by gravity

Rate of flow in CFS = 0.08666 (SD

5) 1

⁄

2

Where S = Slope (in feet per foot of length)

D = Diameter of pipe (inches)

4. Valve to be installed at this high point must release or re-enter the amount of air in CFS equal to the
maximum possible flow of water in CFS immediately adjacent to this high point.

5. To economize in size of valves selected, final step is to determine the maximum pressure differential which
can be tolerated across the orifice consistent with the required flow of air in CFS already determined.

6. To determine this maximum tolerable differential pressure, it is necessary to calculate if there is risk of line
collapse from vacuum. This condition usually is present in thin-walled steel lines above 24". To calculate
collapsing pressure for thin-walled-cylindrical pipe:

Use DeZURIK/
APCO slide rule air
valve computer
or APCO Apslide
Software

P = 12500000 T 3

D

Where P = Collapsing pressure (PSI)

T = Thickness of pipe (inches)

D = Diameter of pipe (inches)

This includes a Safety Factor of 4

7. For air flow in, use the maximum pressure differential thus calculated or 5 psi whichever is lower. Enter
the graph with this differential (never greater than 5 psi) and the flow found during draining to select the
appropriate valve to protect your line from collapse and water column separation due to vacuum.

8. Next enter the graph with the maximum rate at which the line can be filled and use a 2 psi differential
pressure. This valve size is sufficient to vent all air from the line before valve closure. This ensures
maximum performance from the line.

9. Compare the sizes calculated in steps 7 & 8. The larger size is correct for the protection of your system.

10. These valves should be installed on the high point with a shut-off valve below them.

11. The same procedure should be followed for each individual high point.

12. If the line lacks clearly defined high points or they are separated by long stretches of uniform gradient, it is
recommended that the proper valves be selected as explained above and duplicate installations be made at
regular intervals of

To Ensure Maximum Capacity From The Pipeline:

When a line is in operation, air pockets collect both at the high point and for a distance down stream from the high point. To release
the air, install the APCO Air/Vacuum Valves along with a 2" (50 mm) APCO No. 200 Air Release Valve at the high point and a second
Air Release Valve a short distance down stream.

1

⁄4 to 1⁄2 mile at the engineer’s discretion.

5

Typical Air Valve Manhole Installation

Vent Post
Protector

Backfill &

Precast Concrete Slab Top (Two Pieces)

Grade to
Drain

APCO Custom Combination Air Valve

See Bulletin 623

Air

6"

(152 mm)

2" (51 mm)

Weep Holes

Both Sides

Release

Valve

Air/Vacuum

Valve

DeZURIK Wafer

BFV for

Isolation

Vent Line

Size equal to air valve

Fill with

#2 Stone

1 Yd. #2 Stone 1 Yd. #2 Stone

30"

Reinforced Concrete Pipe

6"

(152 mm)

6

Specifications

The Air/Vacuum Valve shall be designed to allow large quantities of air to escape out the orifice when filling
a pipeline and to close water tight when the liquid enters the valve. The Air/Vacuum Valve shall also permit
large quantities of air to enter through the orifice when the pipeline is being drained to break the vacuum.
The discharge orifice area shall be equal or greater than the inlet of the valve.

The valve shall consist of a body, cover, baffle, float and seat. The baffle will be designed to protect the float
from direct contact of the rushing air and water to prevent the float from closing prematurely. The seat shall
be fastened into the valve cover without distortion and shall be easily removed, if necessary. The float shall be
stainless steel, and shall be center guided into the seat.

1

Air/Vacuum Valves shall be sizes
installation of street elbow or mushroom cap. Sizes 4" (100mm) through 30" (750mm) shall have plain outlet
with steel protector hood.

All materials of construction shall be certified in writing to conform to ASTM specifications as follows:

Body and cover Cast Iron ASTM A126 Gr.B
Ductile Iron ASTM A536 GR 65-45-12
Float Stainless Steel ASTM A240
Seat Buna-N
Exterior paint Universal Metal Primer FDA approved for potable water contact
Protector hood Steel

Valve to be APCO Series 140/150 Air/Vacuum Valve.

/2" (15mm) through 3" (80mm) and shall have NPT threaded outlets for

Larger diameter valves may have alternate float designs.

7

Sales and Service

For information about our worldwide locations, approvals, certifications and local representative:

Web Site: www.dezurik.com E-Mail: [e-mail]

250 Riverside Ave. N. Sartell, Minnesota 56377 • Phone: [phone] • Fax: [phone]

Design features, materials of construction and dimensional data, as described in this bulletin, are provided for your information only

DeZURIK, Inc. reserves the right to incorporate our latest design and material changes without notice or obligation.

and should not be relied upon unless confirmed in writing by DeZURIK, Inc. Certified drawings are available upon request.

Printed in the U.S.A.