ST9302-SP 981007~F^X (214) 362-3201 TELEPHONE (214) 358-E$81
ED BELL CONSTRUCTION COMPANY
DALLAS, TEXAS 75354-0787 '~L~-,.~.~S~ ~.'I~F-~.AE} 752-~q .
LETTER OF TRANSMITTAL
TO:
Kimley-Hom and Associatas, Inc.
801 Cherry Stree~ Suite 1100
Fort Worth, Texas 7610;2
Date: October 7, 1998 I ~ob #: 939
At'm: Michel G. DeMotte
Re: Sandy Lake Road Reconstruction
City of Coppell, Texas
THE FOLLOWING ITEMS ARE ATTACHBD:
Copies Spec Section Submittal No. Description
6 NCTCOG 1 Combination air valve
Item 2.13.2
THESE ARE BEING TRANSMITTED:
Information for Record
O&lVl Data
~ Irfformation for Engineer's Approval
~ Retura 2 Copies
CEKI Lb ICATION:
This information has been reviewed and detemuned to be in compliance with the contract
documents including plans and specifications as modified by addenda, change orders, and field
orders. A~ay exceptions to the contract documents are noted below.
El_ Approved as Ccrroc'~d [] Not A~'proved i
; trad3s. ¢
! Robe~ D. Weber
f.o~u. * Ti:o, i~,:;. ~ Project Engineer
COMBINATION AIR VALVES
STANDARD COMBINATION
SINGLE BODY
SERIES 140C
CUSTOM COMBINATION
DUPLEX BODY
SERIES 1800
)LARGE )UBL;
' Gh~es absolute protection to pipe lines
· Eliminates risk of collapsing line (~ue to vacuum
Body, Cover,
Lever Frame ........... Cast Iron
Float ............ Stainless Steel
Seat .................. Buna-N
Lever Frame (
Mechanism
(8" size) ....... Stainless Steel
151C
PHYSICAL DIMENSIONS PHYSICAL DIMENSIONS PHYSICAL DIMENSIONS PHYSICAL DIMENSIONS PHYSICAL DIMENSIONS PHYSICAL DIMENSIONS
HEIGHT 10" · HEIGHT 12V4' · HEIGHT 15~/z''· HEIGHT 17%" · HEIGHT 27%' · HEIGHT 253/4"
· WIDTH 8" · WIDTH 10" ·WIDTH 11" · WIDTH 13" .WIDTH 17t/2'
LENGTH 11" · LENGTH 14" · LENGTH 16" · LENGTH 18" · LENGTH 18%" · LENGTH 22%"
LBS. · WEIGHT 75 LBS. .WEIGHT 100 LBS. .WEIGHT 170 LBS..WEIGHT 205 LBS..WEIGHT 300 LBS.
INLET 125 OR 250 LB.
iNLET INLET ~ INLET
OUTLET 3" PIPE THREAD --= 4" PIPE THREAD FLANGE
OUTLET 1" PIPE THREAD OUTLET z OUTLETS
AVAILABLE
EXCEPT ORIFICE 125 & 250 LB.FLANGES 25 & 250 LB.FLANGES PLAIN W/HOOD
POPPET VARIANCE ALSO AVAILABLE ALSO AVAILABLE THREADED
HEIGHT FLANGED 16'/F HEIGHT FLANGED 19" FLANGED
INLET 125 OR 250
FLANGE
OUTLETS
AVAILABLE
PLAIN W/HOOD
(AS SHOWN)
OR FLANGED
SINGLE BODY SPECIFICATIONS
Combination Air Valve (CAV) sizes 1" th ru 6", (single body, double orifice) allows large volumes of air to escape out the large orifice when filling a pipeline and
closes when liquid enters the valve. During large orifice closure, the small air release orifice will open to allow small pockets of air to escape automatically and
independently of the large orifice.
The large orifice shall also allow large volumes of air to enter during pipeline drainage to break the vacuum The body intet must be baffled to protect the lower
float from direct forces of rushing air and water to prevent premature valve sh ut-off. The top large orifice plug or float must be protected in similar manner for the
same purpose.
The Buna-N seat must be fastened to the valve cover, without distortion, for drop tight shut-off The floats shall be heavy stainless steel, hermetically sealed;
designed to withstand 1000 psi. The top plug or float shall be center guided thru hex bushings for positive shut-off.
Valve exterior to be painted with Red Oxide Phenolic Primer Paint as accepted by the FDA for use in contact with Potable Water.
All materials of construction shail be certified in writing to conform to A.S T.M specifications as follows:
Body & cover Cast iron ASTM A126 GR B
Float Stainless steel ASTM A240
Needle & seat Buna-N
Plug Bronze ASTM B124
Leverage frame Delrin/Cast iron ASTM D2133/ASTM A126 GR B
Valve to be APCO Model (Engineer to Name) Combination Air Valve as manufactured by Valve & Primer Corp. Schaumburg, Illinois US.A
THERE ARE BASICALLY TWO (2) TYPES OF AIR VALVES:
TYPE 1.AIR & VACUUM VALVES (AVV) withieS)LARGE ORIFICE to vent large volumes of air for efficient filling and draining of
pipelines to protect against vacuum-water column separation or pipeline collapse.
TYPE 2. AIR RELEASE VALVES (ARV) with (~)SMALL ORIFICE for continuous venting of air pockets as they accumulate in the
pipeline.
When the above types are combined, the result is a COMBINATION AIR VALVE (CAV).
The COMBINATION AIR VALVE is available in a SINGLE DODY DOUBLE ORIFICE as shown here, or in a DUPLEX arrangement, see Back Page.
The single body is most popular due to its smaller overall size and resulting space saving inside a valve vault, However, it is only
available to size 8 inches.
H OW IT WORKS: Sizes ," thru 6" incorporate a poppet (or plug) which rests freely inside the lever frame. The
center stem of the poppet has SMALL ORIFICE thru it. When water enters the main valve body, it raises the float and float arm which
puts the needle, attached to the arm, in contact with the poppet stem while lifting the poppet to the shutoff position against the
LARGE ORIFICE.
As air accumulates inside the main valve body, the water is displaced, the float arm falls away from the poppet stem to expose the
small orifice and the pocket of air is vented. Water re-enters the main valve body, lifting the float arm back to the shutoff position
and the cycle repeats, as air accumulates. As long as the main valve body is under pressure, the poppet stays closed -- because
the pressure differential across the large orifice is more than the poppet can overcome -- hence the poppet stays closed.
However, for any reason a negative pressure occurs, inside the main valve body, the poppet will drop open to allow air in and
prevent vacuum from forming in the pipeline.
Size 8" fu ncfions in the same man ner, but instead of a poppet, a float is used, for shutting off the large orifice and a separate internal
float operated lever mechanism, is incorporated with a small orifice for venting pockets of air.
Every CAV is hydrostatically seat and shell tested before it leaves our factory to insure quality performance in the field.
~tfyoo ...... TYPICAL PIPELINE SHOWING ITS HYORAULIC GRADIENT
~~~ COMBINATION AIR VALVE "JIUL/C
~"~ & THE POSITION OF NECESSARY AFCOAIR VALVES
A.o VTOBOJ;C
WHERE
TO :.,=-:=.-.::.-,=
INSTALL "--'-' -
ORIFICE SIZES
For 300 p.s.i,
working pressure
MODEL LARGE SMALL
ORIFICE ORIFICE
143C 1" 5/64"
145C 2" 3/32"
147C 3" 3/32"
149C 4" 3/32"
150C 6" 1/8"
151C 8" 5/32"
.=
DISCHARGE CAPACITIES ,:o, COMBINATION AIR VALVE
!" 2" 3" 4" 6" 8'
VALVE SIZE A#O MODEL NO, 143C 145C 147C 149C 150C 151C
1 2 3 4 5 7 10 20 30 50 100 200 300
AIR FLOW THRU VALVE IN STANDARD CUBIC FEET OF FRrS AIR PER SECOND, SCFS
CUSTOM COMBINATION AIR VALVES
EACH CUSTOM COMBINATION AIR VALVE (CCAV) CONSISTS OF ONE APCO AIR & VACUUM VALVE, ONE APCO AIR RELEASE VALVE
OPTIONAL ONE APCO BUTTERFLY VALVE... SHIPPED COMPLETELY PIPED AND ASSEMBLED. PRICE OF EACH CUSTOM COMBINATION AIR
VALVE INCLUDES THE I' PiPE PLUG AND !~ GATE VALVE.
Available in 125, 250, 600 and 900 P.S.I. Classes for those special jobs where you want the very best/
SERIES
1800
COMBINATION
AIR & VACUUM W/AIR RELEASE VALVE
4" 1804 19-~ 20~ 20~
6" 1806 22 223 23~
8" 1808 25-~ 243 25
10" 1810 27 263 27~s
12" lS12 32~ 31{ 31~e
14" lS14 41~ 303 30{
16" 1616 45. 32 32
18" 1818 42 34 34
20" 1820 46 40 40
24" 1824 53 48 48
Custom Combination Air Valves (CCAV)
are recommended where operating
pressures exceed 300 psi or size
requirements exceed 8"*
SIZING
To determine the correct size Single
Body or Duplex Body Combination Air
Valves to use on each high point of the
pipeline, refer to Bulletin 610 or use the
APCO Air Valve Computer (available on
request) or you may send a copy of your
pipeline profile to our Engineering
Department. A full report will be sent
back to you, usually within 72 hours
after receipt of the profile.
*Another feature to recommend the use of
Custom Combination Air Valves is the side
mounted Air Release Valve, can be either of
four (4) valves, shown in the chart below.
With each of the valves shown, the orifice is
much larger and hence the venting capacity
much greater than the orifices in the single
body Combination Air Valve on Page 102.
This is important where large volumes of air
are anticipated after the pipeline is filled and
operating.
TABLE OF ORIFICE
SERIES
1100A
COMBINA1TON
AIR & VACUUM W/AIR RELEASE
WITH BuI'rERFLY VALVE
6- 1,O,A 22-: 27¼
I,o'1,1,DA 127 133 1 3. I
1 2.1111.132 140 140 A
Valve SIze; MAXIMUM ORIFICE WHICH CAN BE USED WITH FOLLOWING PRESSURES
'lyp.Of
IMM 10 25 50 75 100 125 150 200 250 300 500 800 1500
STANDARD ORIFICES ARE IN ORANGE
DUPLEX BODY SPECIFICATIONS
The Custom Combination Air Valve Serfee 1800 shall be heavily designed cast Iron, to allow large volumes of air to escape thru the orifice when filling the pt~tne and shall
shutoff water tight, when the water entom the valve. The Air Valve shall bermlt large volumes of air to enter the odflce when the pipeline is being drained to prevent vacuum
from forming and water column separation. The valve shall consist of a body, cover, baffle, float and seat. The baffle will be an integral part of the body, designed to protect
the float from direct contact of the rushing alrand Mugs of water to prevent a false shutoff. The seat shall be Bur. a-N, fastened Into the valve cover, without distortion, and
be easily replaced. The float .bell be stainless steel, hermetically sealed to withstand 1000 psi and be center guided at each end for positive seating.
The Air & Vacuum Valve shall have the outlet covered with a steel protector hood or threaded or be flanged. (Engineer to select outlet).
The Automatic Air Relea~ Valve shall be designed to operate under pressure to allow entrapped air inside the pipeline to escape and then shutoff to prevent water
escaping. The Air Release Valve will then stay closed until more air accumulates and the opening cycle will repeat automatically. The Air Release Valve float shaft be heavy
stainless steel hermetically Sealed to withstand 1000 psi.
When Series 1100A is specified, an APCO Eufte~ly Valve - V~fer style shall be supplied for isolation service. The Butterfly Valve shall be freely interchangeable without
the need for special tools or special training. The seat must be Buns*N, molded with a steel flanged dng inside for high strength and tight seating. The disc must pivot
eccentrically from the closed position to mtnimize torque and ease to open or close the valve.
The shafts must be stainless steel and double sealed with "O" rings to prevent leaknge.
The Custom Combination Sedea 1800 and Series 1100A Air Valves shall be furnished completely assembled and pressure tested from the factory as a complete unit ready
for installation on the pipeline.
All materials of construction shaft be certified In writing to conform to A.S.T.M. specifications as follows:
Valve Bodies Cast iron ASTM A126 Gr.B
Shafts Stainless steel ASTM A270
Seats Buna-N
Floats Stainless steel ASTM A240
Extador primer Phenolic primer red oxide FDA approved for potable water contact
Valve to be Series 1800 Custom Combination Air & Vacuum/Air Ralease Valve or Series 1100A Custom Combination Air & Vacuum/Air Release Valve with Isolation
Butterfly Valve, as manufactured by Valve & Primer Corp.. Schaumburg, Illinois. U.S.A.