CLA-VAL 581 Installation Operation & Maintenance

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
® )