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CLA-VAL 581 Installation Operation & Maintenance

CLA-VAL 581 Installation Operation & Maintenance

Wafer & globe silent check valves

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WAFER & GLOBE SILENT CHECK VALVES
OPERATION:
Cla-Val Silent Check Valves operate automatically, to open...
when pump flow starts and close silently ...when pump flow
stops.
INSTALLATION:
Silent Check Valves, Wafer and Globe style must be
installed between flat faced iron or steel flanges per ANSI
B16.5 or Awwa 207, utilizing a full faced gasket to bridge the
joint between the seat O.D. (2) and the body (1) flange face.
In this manner a pressure seal at this joint is made (see
Note 1). Install the valve so that the nameplate data is plain-
ly read and the flow arrow points in the flow direction.
MAXIMUM ALLOWABLE INSIDE
DIAMETER OF FLANGE
(SEE NOTE No. 1)
VALVE
VALVE
A
A
SIZE
SIZE
1
2
⁄ 2
2.940
14
14.140
3
3.570
16
16.160
4
4.570
18
18.180
5
5.660
20
20.200
6
6.720
24
24.250
8
8.720
30
30.250
10
10.880
36
36.250
12
12.880
42
42.250
STANDARD RING GASKET DIMENSIONS (SEE NOTE No. 2)
I.D. For
125 Lb.
O.D. for
O.D. for
Valve
and
125 Lb.
250 Lb.
Size
250 Lb.
Gasket
Gasket
Gasket
2
1
2.875
4.875
5.125
2
3
3.50
5.375
5.875
4
4,50
6.875
7.125
5
5.562
7.750
8.500
6
6.625
8.75
9.875
8
8.625
11.000
12.125
10
10.750
13.375
14.250
12
12.750
16.125
16.625
MAINTENANCE:
Cla-Val Silent Check Valves are ruggedly designed for years of trouble-free
service. Therefore, regular maintenance is not required. However, during
initial start-up period the following problems may surface (due to mis-application)
that can be easily resolved:
A. No Flow thru Valve:
1. Observe that the flow arrow name plate, on the
valve body, is pointing in the direction of flow.
2. Check that the down stream shut-off valve is full open.
B. Valve Chatters:
1. Confirm that the flow velocity is a minimum 3'/Sec.
2. Check that there is a minimum of 3 diameters of
straight pipe installed up stream of the silent check valve.
C. Valve Leakage:
1. Confirm a full face gasket is installed per Note 1.
VALVE SEAT
A
MAXIMUM ALLOWABLE INSIDE
DIAMETER OF FLANGE
(SEE NOTE NO. 1 )
ANSI B16.5 COMPANION
FLANGE WITH FLAT FACE
Ring or Full Faxe Gasket
(1/16" Maximum Thickness)
Note No. 1 - The mating companion flange I.D. must overlap the Valve seat.
This is required to achieve a seal between the seat O.D. and
The Body I.D. Interface area.
I.D. For
125 Lb.
O.D. for
Valve
and
125 Lb.
Size
250 Lb.
Gasket
Gasket
14
14.000
17.750
16
16.000
20.250
18
18.00
21.625
20
20.00
23.875
24
24.000
28.250
30
30.000
34.750
36
36.000
41.250
42
42.000
48.000
INSTALLATION / OPERATION / MAINTENANCE
SERIES
Series 581
Installed with name plate here
Globe Style
Check Valve
2" thru 42"
Note 1: flanged gasket
must bridge this joint
for pressure seal
VALVE DISC
VALVE BODY
Silent Check Valve - Flanged or Wafer Style
(Flanged Style Shown)
O.D. for
250 Lb.
Gasket
19.125
21.250
23.500
See
25.750
Note 2
30.500
37.500
44.000
50.750
580 & 581
5
3
4
6
2
Detail
Description
Material
1
Body
Cast Iron
2
Seat*
Bronze or SS
3
Disc*
Bronze or SS
(Optional Buna-N
4
Spring*
Stainless Steel
5
Bushing*
Bronze
6
Screw*
Stainless Steel
(3" & larger valves)
Note 2: All size 2" and 2 1/2" valves have
threaded seats in liev of screws
* Recommended Spare Part Kit
FLOW OPEN
1
3
2
4
5
6
SERIES 580
WAFER STYLE CHECK VALVE
2" THRU 10"
1
®
)

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Summary of Contents for CLA-VAL 581

  • Page 1 42.000 48.000 50.750 MAINTENANCE: Cla-Val Silent Check Valves are ruggedly designed for years of trouble-free service. Therefore, regular maintenance is not required. However, during initial start-up period the following problems may surface (due to mis-application) that can be easily resolved: A.
  • Page 2 A B C D 12” 14” CLA-VAL P.O. Box 1325 • Newport Beach, CA 92659-0325 • Phone: 949-722-4800 • Fax: 949-548-5441 • E-mail: claval@cla-val.com • Website cla-val.com © Copyright Cla-Val 2011 Printed in USA Specifications subject to change without notice. N-580/581 (R-3/2011)

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580