Yokogawa GC8000 Process Gas Chromatograph - Manual (Page 411)

<6. Maintenance>
6-58
IM 11B08A01-01E
F0250.ai
In case of K9193NT, NY In case of K9193NU, NX
(2)
(2)
(1)
Air Air
SV11
EXH
IN
IN IN
OUT
SV11
EXH
IN OUT
OUT2 OUT2
OUT1 OUT1
PV12 PV11
PV11
Figure 6.50
(6) Diaphragm of Pneumatic Valve for Atmospheric Pressure Balancing or
Stream Switching
(1) Remove the pipe for air.
(2) Remove the four screws on the upper section of the stream switching valve (see Figure
6.51) or the atmospheric-pressure balancing valve (see Figure 6.52) to remove the upper
section of the valve itself.
(3) Replace the diaphragm with a new one and reassemble the valve. Install the new
diaphragm in the same orientation. Exercise care to avoid losing the adjusting pin and
spring at the lower section of the valve.
F0251.ai
1
10
No. Part name Part number Quantity
air in
4
2
3
11
7
5
6
9
8
K9192WB K9192W
A
1 BASE K9192WD 1 1
2 BODY K9192WE 1 1
3 CAP K9192WF 1 1
4 PISTON K9192WG 1 1
5 O-RING K9142QU 1 1
6 O-RING L9817FK 1 1
7 SPRING K9192WH 1 1
8 SPRING K9035AW 1 1
9 PIN K9192WK 1 1
10 DIAPHRAGM K9192WL 1
K9192WV 1
11 SCREW Y9335JU 4 4
Figure 6.51 Stream Switching Valve
2nd Edition : May 11, 2012-00