Cla-Val 49-01/649-01 Technical Manual - Manual (Page 6)

CLA-VAL
Copyright Cla-Val 2008 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-49-01 (R-1/08)
SERVICE SUGGESTIONS
SYMPTOM
Main valve
won't open.
Main valve
won't close.
PROBABLE CAUSE
Controls not adjusted properly.
Orifice port and/or orifice
sensing line clogged.
Control line shutoff cock to
cover, main valve outlet,
and/or orifice sensing line
closed.
Either of the pilot valves stuck
closed. Mineral deposits or
foreign matter under disc
retainer assembly.
Main valve stuck closed.
Mineral buildup on stem. Stem
damaged.
Controls not adjusted properly.
CRA and/or CDHS-18 Control
has foreign matter or mineral
buildup on yoke assembly.
CDHS-18 Control has foreign
matter or mineral buildup
above diaphragm.
Diaphragm of either control
leaks or stuck. Diaphragm
nut loose.
Clogged restriction assembly.
Clogged Flow Clean Strainer.
Control line shutoff cock from
inlet to restrictor closed.
CV Flow Control closed or
clogged.
Pilot control (CRA or
CDHS-18) disc worn or
nicked. Fails to seat.
REMEDY
Readjust controls.
Remove line and clean
orifice port. Clean or
replace line.
Open shutoff cock.
Remove plug and disc
retainer assembly. Clean
or replace.
Disassemble valve, clean
parts and/or replace dam-
aged parts.
Readjust controls.
Disassemble and clean
parts.
Disassemble and clean
parts.
Disassemble and clean
parts.
Remove and clean.
Remove and clean or
replace.
Open shutoff cock.
Readjust or disassemble
and clean.
Remove disc retainer
assembly and replace.
COVER
PIPE PLUG
COVER BEARING
SPRING
STEM NUT
DIAPHRAGM WASHER
DISC RETAINER
BODY
* SPACER WASHERS
DISC GUIDE
SEAT
PIPE PLUG
STEM
SEAT 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
D1 2
3
5
Y
B1
1
A
C
B1
S
D2
D3
B1
B2
4
INLET OUTLET
X58C
CRA
X52A-1
X46A
2.
3.
CDHS18
5.
4.
A.
CK2
B.
1. HYTROL MAIN VALVE
CV
C.
X43
Y.
For a more detailed IOM Manual go to www.cla-val.com or contact a Cla-Val Regional Sales Office.
40-01/640-01 SCHEMATIC
CDC-1
D.
Flow
BASIC COMPONENTS
1 100-01 Hytrol (Main Valve)
100-20 600 Series Hytrol (Main Valve)
2 X58C Restriction Fitting
3 CRA Pressure Reducing Control
4 X52A-1 Orifice Plate Assembly
4 CDHS18 Differential Control
OPTIONAL FEATURES
A X46A Flow Clean Strainer
B CK2 Valve (Isolation Valve)
C CV Flow Control (Closing)
D Check Valves with Isolation Valve
S CV Flow Control (Opening)
Y X43 “Y” Strainer
X140-1
Security Cap
Option