Page 34 of 36
P/N 595225-01 Rev C 4/12
INSTALLATION OF ALTERNATE
QUICK DISCONNECT COUPLINGS
The Low Pressure manifold comes equipped with both male (checked) and female
quick disconnect couplings suitable for connecting to most SCOTT AIR-PAK SCBA
respirator products. The manifold has two additional plugged ports that may be
used for installation of alternate quick disconnect couplings. Use ONLY self-
checked couplings. SCOTT offers the following female self-checked couplings:
• P/N 6831-00 Suitable for connecting to Schrader
3
male quick disconnects
• P/N 19458-00 Suitable for connecting to Hansen
4
male quick disconnects
Both couplings have 1/4” NPT male threads. Install a coupling as follows:
1. Decontaminate unit as required.
2. Place the RIT-PAK III portable air supply onto a large clean work surface.
3. Close the cylinder valve by pushing in and turning the hand wheel fully
clockwise.
4. Purge the residual air pressure from the system.
5. Remove the cylinder from the carrying bag and set aside.
6. Use a 1/4” hex wrench to remove a plug from the Low Pressure manifold
body.
7. Clean the internal threaded area to remove all traces of sealant used to
retain the plug in place. Do not permit any debris into the air path. See
FIGURE 30.
WARNING
THE WORK AREA AND RESPIRATOR MUST
BE CLEAN BEFORE PERFORMING THIS
PROCEDURE. DO NOT PERMIT DIRT OR
FOREIGN MATTER INTO THE AIR FLOW
PATH. DIRT OR FOREIGN MATTER IN
THE RESPIRATOR AIR PATH MAY CAUSE
A MALFUNCTION OF THE RESPIRATOR
WHICH COULD RESULT IN SERIOUS
INJURY OR DEATH.
WARNING
FAILURE TO VERIFY PROPER OPERATION
OF THE EQUIPMENT AFTER INSTALLATION
OF AN ALTERNATE QUICK DISCONNECT
TO THE MANIFOLD COULD LEAD TO
A MALFUNCTION OF THE EQUIPMENT
D U R I N G U S E I N A H A Z A R D O U S
ATMOSPHERE WHICH MAY RESULT IN
SERIOUS INJURY OR DEATH.
3
Schrader is a registered trademark of Scovill, Inc.
4
Hansen is a registered trademark of Tuthill Corporation.
8. Wrap the male threads of the coupling with one layer of .0035” thick PTFE
thread sealant tape. Wind the tape onto the threads clockwise (as seen from
the end of the threads) beginning at the first thread. DO NOT ALLOW TAPE
TO EXTEND BELOW THE FIRST THREAD. See FIGURE 31.
9. Thread the coupling into the open port in the manifold. Tighten to a torque
of 180 inch-lbs.
After completion of the installation, perform a REGULAR OPERATIONAL INSPECTION
to verify that there are no leaks in the assembly. See page 7 for an illustration of the
complete assembly
FIGURE 30
FIGURE 31
CAUTION
OVERTIGHTENING THE CYLINDER VALVE
MAY CAUSE DAMAGE THAT COULD
RESULT IN LEAKAGE OF AIR FROM THE
CYLINDER. USE NO TOOLS TO CLOSE THE
CYLINDER VALVE.
