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Type N550
BULKHEAD
TO TRUCK
T20995
Possible hand and finger pinch point
between closing Type N550 handle and
latch block. Handle closes quickly and
with extreme force. Keep hands and
fingers away from handle as it closes.
10. Test the remote release and Type N550
operation. Rotate handle counter clockwise
to open valve. Valve must stay open. HANDLE
AND VALVE MUST QUICKLY "SNAP"
CLOSED when (a) air pressure is exhausted
from Type P327D pneumatic remote release,
and (b) the handle is pushed closed from the
open position.
!
All open Type N550 Emergency Valve(s)
attached to the remote pneumatic
release system must properly close
when air pressure is exhausted from the
system. Remote release controls must
quickly exhaust pressure from the
supply line to close emergency valves.
6
HOSE CONNECTION
12 (305)
OR MORE
Figure 5. Motion Release Cable Installation (Optional)
CAUTION
WARNING
FIXED PIPING
NAMEPLATE UP
EMERGENCY SHUTOFF
VALVE TYPE N550
CABLE
1 (25)
"S" HOOK
Optional Motion Release Cable
With either the cable or pneumatic remote release
hook-ups, it is possible to connect an additional cable
from the Type N550's operating handle to the truck
along the transfer hose(s). This cable would close
the valve if the hose(s) is stretched (driver does not
disconnect) beyond a preselected limit. The hook-up
does not affect the normal operation of the valve.
Motion Release Cable Installation
1. Connect a suitable release cable such as stainless
steel aircraft cable to a standard "S" hook.
Attach the "S" hook to the Type N550 handle as
shown in Figure 5.
2. The cable should run through the bulkhead just
below and to the side of the pipe. The cable
should be in line with the operating lever, refer
to Figure 5.
3. Leave enough slack in the cable to allow the
Type N550 lever to move freely but not close
during normal hose movement or hook-up.
4. Run the cable along the hose. Tape or secure it to
the hose. Fasten the cable securely to the "truck"
end hose connection.
When the hose stretches more than the amount of
slack left in the cable, the tightening cable will pull the
lever down and close the Type N550 valve.
REMOTE ACTIVATION METHOD,
CABLE OR PNEUMATIC,
ATTACHMENT LOCATION
INCHES
(mm)
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