APTech Series AK M86 - Manual (Page 8)

AK M80/86 Manual P/N 00-15000010 Rev 3
Install a check valve into port labeled “HP-B” on AK M80/86 manifold. Flow arrow on check valve
should be pointing into the AK M80/86 manifold inlet port. Install manual shut off valve onto check
valve.
Connect a “pigtail” (bent piece of tubing with loops for flexibility and to reduce stress on connections) or
flexible braided hose from the outlet of the left cylinder valve to the manual valve on the AK M80/86
manifold regulator inlet port labeled “HP-A”.
Connect a “pigtail” (bent piece of tubing with loops for flexibility and to reduce stress on connections) or
flexible braided hose from the outlet of the right cylinder valve to the manual valve on the AK M80/86
manifold regulator inlet port labeled “HP-B”.
Install appropriate fitting into line regulator 1/4 NPT female outlet port. Install delivery line to point of
use using tubing or piping.
4.4. Relief Valve Installation
Remove 1/4 NPT plug from port on AK M80/86 crossover regulator. Clean Teflon thread tape from port.
Install a relief valve that is set above the AK M80/86 crossover regulator pressure settings. See Table 1
for recommended nominal relief valve set pressures. If necessary due to gas properties, route the relief
valve outlet line to an appropriate scrubber or exhaust system. Otherwise, direct the relief valve outlet
away from personnel.
AK M80/86 Model
Nominal Crossover
Regulator Outlet Range
Relief Valve
Set Pressure
AK M8002, M8602 85-115 psig 150 psig
AK M8006, M8606 85-115 psig 150 psig
AK M8010, M8610 135-165 psig 200 psig
AK M8015, M8615 225-275 psig 325 psig
AK M8025 435-515 psig 600 psig
Table 1. Crossover Relief Valve Nominal Set Pressures
It is also suggested that a relief valve be installed in the plugged outlet port of the AK M80/86 line
regulator. Remove 1/4 NPT plug from outlet port on AK M80/86 line regulator. Clean Teflon thread tape
from port. Install a relief valve that is set above the AK M80/86 line regulator maximum outlet pressure.
See Table 2 for recommended nominal relief valve set pressures. If necessary due to gas properties, route
the relief valve outlet line to an appropriate scrubber or exhaust system. Otherwise, direct the relief valve
outlet away from personnel.
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