Cla-Val 98-06/698-06 Technical Manual - Manual (Page 6)

V. OPTIONAL FEATURE OPERATING DATA:
SUFFIX B (ISOLATION VALVES):
CK2 COCKS (B) ARE USED TO ISOLATE THE PILOT SYSTEM FROM MAIN LINE PRESSURE. THESE
VALVES MUST BE OPEN DURING NORMAL OPERATION.
VI. CHECK LIST FOR PROPER OPERATION:
( ) SYSTEM VALVES OPEN UPSTREAM AND DOWNSTREAM
( ) AIR REMOVED FROM THE MAIN VALVE COVER AND THE PILOT SYSTEM AT ALL HIGH POINTS.
X78-4 + X101(5) HAS AN AIR BLEED SCREW LOCATED ON THE TOP OF THE X101 POSITION
INDICATOR. CPM-A (4) HAS AN AIR BLEED SCREW IN A FITTING LOCATED ON THE SENSING
CHAMBER OF THE CPM-A (4).
( ) CK2 COCKS (6A & 6B) OPEN DURING NORMAL OPERATION
( ) CK2 COCKS (B) OPEN (OPTIONAL FEATURE)
( ) CV FLOW CONTROLS (C) AND (S) ARE FULL OPEN (ADJUSTING STEM BACKED ALL THE WAY
OUT) AT INITIAL START-UP. AFTER START-UP, SYSTEM CONDITIONS SHOULD BE MONITORED
WHEN MAKING CV FLOW CONTROLS (C) AND (S) ADJUSTMENT (OPTIONAL FEATURE).
( ) PERIODIC CLEANING OF STRAINERS (2 & 7) IS RECOMMENDED
CATALOG NO.
98-01/698-01
DIST. CODE 002
OPERATING DATA-CONTINUED
C
A
D
R
EV
IS
IO
N
R
EC
O
R
D
-
D
O
N
O
T
R
EV
IS
E
M
A
N
U
A
LL
Y
SE
E
SH
EE
T
1
LT
R
D
ES
C
R
IP
TI
O
N
BY
D
A
TE
TYPE OF VALVE AND MAIN FEATURES
CVCL 1 2 3 4
A
BF
DRAWING NO.
SHEET 5 OF 5
REV
SUFFIX C (CLOSING SPEED CONTROL):
CV FLOW CONTROL (C) CONTROLS THE CLOSING SPEED OF THE MAIN VALVE. TURN THE
ADJUSTING STEM CLOCKWISE TO MAKE THE MAIN VALVE CLOSE SLOWER.
SUFFIX S (OPENING SPEED CONTROL):
CV FLOW CONTROL (S) CONTROLS THE OPENING SPEED OF THE MAIN VALVE. TURN THE
ADJUSTING STEM CLOCKWISE TO MAKE THE MAIN VALVE OPEN SLOWER.
VALVE X78-4 (5) % POSITION
SIZE TOTAL TRAVEL CHANGE PER TURN
2" 100-01
3" 100-20
2-1/2" 100-01
4" 100-20
3" 100-01
6" 100-20
4" 100-01
6" 100-01
8" 100-20
10" 100-20
8" 100-01
10" 100-01
12" 100-20
.40" (10mm) 9.9%
.40" (10mm)
.40" (10mm)
8.2%
7.0%
REFERENCE TABLE FOR X78-4 (5) ADJUSTMENT SCREW
.80" (20mm) 5.3%
2.6% 1.40" (35mm)
.80" (20mm) 3.7%
1.40" (35mm)
% POSITION CHANGE IS THE % CHANGE IN MAIN VALVE (1)
OPENING PER TURN OF THE X78-4 (5) ADJUSTMENT SCREW
1.8%
208358
2-03-11 PRESSURE MANAGEMENT CONTROL VALVE
WITH X58E & ACCUMULATOR (SIZES 2" - 10")
VL
CH
2-08-11
2-08-11