Cla-Val 50-20 - Manual (Page 18)

CLA
-VAL
Copyright Cla-Val 2005 Printed in USA Specifications subject to change without notice.
P.O. Box 1325
• Newport Beach, CA 92659-0325
• Phone: 949-722-4800
• Fax: 949-548-5441
• E-mail: [email protected]
• Website cla-val.com
©
N-100-01 (R-5/05)
BOL
T/NUT
T
ORQUING PROCEDURES ON V
A
LVE COVERS
4
BOL
TS
6
BOL
TS
8
BOL
TS
12
BOL
TS
16
BOL
TS
20
BOL
TS
4
3 2
1
6
5
4
3 2
1
8
7
6
5
4
3
2
1
0
9
8
7
6
5
4
3
2
1
12
11
10
9
8
7
6
5
4
3
2
1
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
20
19
18
17
16
15
14
13
12
11
Follow this procedure when reassembling MAIN V
alve:
1.
T
ightens bolts/nuts in a “Star” or “Cross-Over” Pattern following the
numbers shown above to insure that cover seats evenly on the diaphragm material and body
.
2.
T
orque the bolt/nuts in three stages:
A.
T
o
approximately 10% of final torque valve.
B.
T
o
approximately 75% of final torque valve.
C.
T
o
final required torque valve.
3. V
alves that are to be tested to 375 PSI or higher should be retorqued
after 24 hours.
COVER
PIPE PLUG
COVER BEARING
SPRING
STEM NUT
DIAPHRAGM W
ASHER
DISC RET
AINER
BODY
* SP
ACER W
ASHERS
DISC GUIDE
SEA
T
PIPE PLUG
STEM
SEA
T
O-RING
STUD
8" and Larger
* DIAPHRAGM
* DISC
* Repair Parts
Seat Screw
8" and Larger
(Globe
or
Angle)
PIPE PLUG
HEX NUT
8" and Larger
Cover Bolt 6" and Smaller
KO DISC GUIDE
KO SEA
T
KO Anti-Cavitation
T
rim Option
(Patent Pending)
KO Anti-Cavitation
T
rim
can be added to any standard Hytrol V
alve
100-01 Hytrol Main V
alve
Assembly