Spectra Watermakers AQUIFER 360 EXPEDITION, Owner'S Manual

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Spectra High Pressure Tube Fitting Assembly Instructions
The Watermaker has eight high pressure fittings, two on each cylinder on the Clark
Pump, two on the pressure vessel end caps, and two 90 - degree elbows on the back of
the Clark Pump. As the compression fitting is tightened, it compresses a ferrule onto
the stainless tubing, fixing the ferrule permanently to the tube and holding the com-
pression nut captive.
The body of the fitting seals to the underlying component with an O - ring. On the Clark
Pump cylinders and the end caps this O - ring is compressed by tightening the entire
fitting. The O - rings on the 90 - degree fittings on the back of the Clark Pump have cap-
tive nuts and washers, which compress the O - rings without turning the entire fitting.
If a tube fitting leaks it can sometimes be resealed by just tightening. You must use
two wrenches, a 13/16 - inch wrench to hold the base, and a 7/8 - inch wrench to turn the
compression nut. The 13/16 - inch wrench will need to be thin so as not to interfere with
the compression nut. If this doesn ’ t work, disassemble the fitting, grease liberally with
silicone grease (the ferrule and the threads) and re - tighten firmly.
The base O - rings should be gently compresses to achieve a good seal, and may be
damaged by overtightening. As long as the metal washer is in contact with the block,
the o - ring will seal.
Stainless Fitting Hex Nut
Connector O - RING
Nickel - Bronze High Pressure Elbow
Nickel - Bronze High Pressure Straight Fitting
Ferrule