Step 3 Attach Module To Vacuum Chamber; 1/8 Npt Pipe Thread; Vcr Type Fitting; Kf Flange - HELIX GRANVILLE-PHILLIPS Convectron ATM Instruction Manual

1/8 NPT pipe thread

VCR type fitting

KF flange

ConFlat flange

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Convectron ATM Vacuum Gauge Module Instruction Manual
Step 3
Attach module to vacuum chamber
Attach the module vacuum chamber fitting to its mate on the vacuum
chamber.
The 1/8 NPT pipe thread accommodates a standard 1/8 NPT female fitting.
a. Wrap the threads of the port to the vacuum chamber with Teflon
b. Without using a wrench or other tool, tighten the module just enough
to achieve a seal.
a. Remove the plastic or metal bead protector cap from the fitting.
b. If a gasket is used, place the gasket into the female nut.
c. Assemble the components and tighten them to finger-tight.
d. While holding a back-up wrench stationary, tighten the female nut 1/8
turn past finger-tight on 316 stainless steel or nickel gaskets, or 1/4 turn
past finger-tight on copper or aluminum gaskets.
The KF mounting system requires O-rings and centering rings between
mating flanges.
a. Tighten the clamp wing nut to compress the mating flanges together.
b. Seal the O-ring.
To minimize the possibility of leaks with ConFlat flanges, use high strength
stainless steel bolts and a new, clean OFHC copper gasket. Avoid
scratching the seal surfaces. To avoid contamination, install metal gaskets.
a. Finger tighten all bolts.
b. Use a wrench to continue tightening 1/8 turn at a time in crisscross
order (1, 4, 2, 5, 3, 6) until flange faces make contact.
c. Further tighten each bolt about 1/16 turn.
Installation
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tape.
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