CF-Village-CS 890228 GINN, INC. CONSUl,TING ENGINEERS
February 28, 1989
Mr. Karl D.'Hirschey
Cajun Contractors, Inc.
P.O. Box 540487
Dallas, Texas 75354-0487
Re: Village Parkway Pump Station
City of Coppell, Texas
Surge Valve
Dear Mr. Hirschey:
We have received and reviewed your submittal for the 12" surge
relief valve on this project. Prior to releasing this submittal,
we would like to investigate the possibility of modifying the
surge system on the pump station.
The system as designed and bid is a surge relief system. This
type of valve will open only in the event of an over pressure
condition. A surge anticipator valve will open in advance of the
surge wave, thus allowing a smaller valve to dissipate a surge
before the over pressure condition occurs.
Please provide us with a proposal to substitute a 12" Cla-Val
Model 652-03 Surge Anticipator Valve for the 12" Surge Relief
Valve. It should be noted that this surge anticipator valve has
a 12" body with 10" internals and meets the required Cv-
Upon receipt of your proposal, we will evaluate the benefits and
cost differential (if any) and forward the matter to the City of
Coppell for their consideration and possible issuance of a change
order.
Please call if you have any questions.
Sincerely,
Sanford W. Case, P.E.
Project Manager
cc: Russell Doyle, P.E.~ Steve Goram
H. Wayne Ginn, P.E. Gabe Favre
J.R. Richardson Smoky Ginn
File 380
17103 Preston Road ·Suitc 100 · LB 118 · Dallas, Tcxa.s 75248 · Phone 214/248-4900
L J'= MODEL 652-03
CLA-VALC0 Surge Anticipator Valve
I
· Power Failure Surge Protection
· New Improved Flow Charactadstics
· ¥, · Reduced Cavitation Design
· New Design Features For Easier
Installation and Maintenance
Description
- The Cla-Val Model 652-03 Surge Anticipator Valve Is used to
~ "~ protect pumps, pumping equipment and all applicable pipe-
?!
lines from dangerous pressure surges caused by rapid
..? changes of flow velocity within a pipeline.
When pumping systems are started and stopped gradually,
harmful surges do not occur. However, should a power fail-
ure take place, the abrupt stopping of the pump can cause
dangerous surges in the system which could result in severe
equipment damage.
The 652-03 Surge Anticipator Valve is designed to be used in
a pumping system to prevent excessive surge pressure in the
event of power failure. Power Failure to a pump will usually
result in a down surge in pressure followed by an up surge in
pressure. The surge control valve opens on the initial Iow
pressure wave, diverting the returning high pressure wave
from the system. In effect, the valve has anticipated the re-
turning high pressure wave and is open to dissipate the dam-
age causing surge. The valve will then close slowly without
generating any further pressure surges.
Typical Applications
The 652-03 Surge Anticipator is installed to sense the pump
~ CLA-VAL PUMP discharge line, dissipating surges to atmosphere. The valve
CONTROL VALVE will automatically protect the system from damaging surges
DISCHARGE TO caused by sudden pump shutdown or power failure.
ATMOSPHERE
CLA-VAL. CHECK VALVE ~ ATOR VALVE
v ~ DISCHARGE TO SYSTEM
Specifications
Size Adjustment Ranges Materials
4", 6", 8", 10", 12", 16", Globe Pattern High Pressure Pilot (CRL) Main valve body and cover:
0 to 75 psi Cast Iron ASTM A48
End Detail 20 to 200 psi*
Flanged 125 or 250 ANSI B16.1 100 to 300psi** Main valve trim:
Pressure Rating Bronze ASTM
125 class - 175 psi Max. Low Pressure Pilot (CRA) Pilot Control System:
250 class - 300 psi Max. 2 to 30 psi Bronze ASTM B62 with
Temperature Range 15 to 75 psi* 303 Stainless Steel Trim
Water to +180°F. Max. 30 to 300 psi Rubber Parts:
Buna-N Synthetic Rubber
· Supplied unless otherwise specified
E-(~52-03 (6/87) eCOPYRIGHT CLA-VAL CO. 1987 PRINTED IN USA "Supplied on special order at extra cost
Schematic Diagram
8urge Anticll~lor Valve
1 100-20 H~rol Main Valve
2 Flow Llmlter
8 Restriction Fi~lng
9 Ch~k Valve
10 ,,y. Strainer
11 Bell R~ucer
12 PI~ Plug
13 C~k (Isolation Valve)
14 Reslrlct~n Firing
B Shutoff C~k--I~latea PIIol system
Dimonsions (in
VALVE SIZE 4" 6" 8" 10" 12" 16"
A 125 ANSI 13.75 17.75 21.25 26.00 30.00 35.00
AA 250ANSI 14.25 18.50 22.25 27.25 31.25 36.50
O 5.00 6.25 7.50 8.75 10.25 12.75 '"
C 16.50 18.00 18.00 19.50 25.00 29,00 - - -
D 12.00 12.75 14.50 16.00 17.50 19.00 i :
E 8.00 8,75 12.00 13.50 16.00 17,00 ~- A ~ ....
Sizing Guidelines
VALVE SIZE 4" 6" 8" 10" 12" 16" Pump inlormalion
RECOMMENDED 1 Number of pumps, types of pumps and type el drive
MAXIMUM 2 Shutoff head of pump
FLOW RATE 3 Pumping flow rate GPM
(GPM)(H20) 580 1025 2540 4000 6080 9050
4 Discharge static head and pumping head
MAXIMUM
INTERMITTENT 5 Suction atallc head and pumping head
FLOW RATE
(GPM)(H~,O) 1020 1845 4050 7180 11150 16800
Syalem and Conditions
6 Pipe size, lenglh, thickness and materiel
Sizing Information ? Fluid to be handled, specific gravity
Because of the many variable conditions that generally exist In any given sys- 8 Normal system velocity
tern, proper sizing Is of prime Importance. Incorrect valve sizing will nullify the
9 Provide system drawings, if possible
abllilyof the652-03SurgeAnticipalor Valvetoelfectlvelyellmlnatellnesurges. 10 Any special considerations
Therefore, II Is necessary to state the following specific pump Informallofl and
pumping system conditions to calculale the proper valve size.
Aisc Specify; Pressure class, Trim Material and Adjustment Ranges
Purchase SpecificaUons
This valve shall be hydraulically operated with pilot controls intergral bearing in the, valve seat. The main valve shall have
that will cause the main valve to open on a Iow pressure wave a single removal seat and a renewable disc having a rectan-
or a high pressure wave. The high pressure pilot shall be set gular cross-section and contained on three and one-half
to open at any pressure above the normal operating pres- sides. No external packing glands are permitted. The dia-
sure. The Iow pressure pilot shall be set to open the main phragm must not be used as a seating surface and there shall
valve at any pressure below its normal operating pressure, be no pistons operating the main valve or any pilot controls·
The Iow pressure pilot shall allow the main valve to open to a The pilot controls shall be direct acting, adjustable, spring-
preset amount as controlled by a hydraulic limiter, loaded, diaphragm valves.
The main valve shall be a hydraulically-operated, pilot-con- This valve shall be similar in all respects to the Cla-Val Model
trolled, diaphragm-type, globe valve. The valve stem shall be 652-03 Surge Anticipator Valve as manufactured by Cla-Val
guided at both ends by a bearing in the valve cover and an Co., Newport Beach, California·
r CLA-VAL CO. CLA-VAL CANADA LTD CLA-VAL SA
P.O. Box 1325 2 Christie Drive Ch. des Mesanges 1
Newport Beach, CA 92663 Beamsville, Ontario CH-1032 Romanel/Lausanne
(714) 548-2201 Canada, LOR 1BO Switzerland
· :CIA-VAI ~1] (416) 563-4963 Tel. (4121) 36 49 41