Appendix C Gas Valve
C-37
Test Ports
available on both sides up -
stream V1, between V1 and
Pressure taps
MBC-1000/2500…
1, 2, 3, 4, 5
G 1/8 Screw plug
20
16
12
8
4
p
Br
20
16
12
8
4
p
Br
4
5
4
3
1
2
3
1
2
6, 7
3
4
4
5
3
1
2
2
6, 7
MBC-4000…
6
Air pressure signal
7
Combustion chamber pressure
MBC-SE...
V2, downstream V2, and on
nipple (P/N 219-008) can be
screwed in any of these pres -
sure tap ports.
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