Tube Material Working Temperature
Nylon (Rilsan) Less than 158°F (70ºC)
Copper Less than 320°F (160ºC)
Stainless Steel Less than 482°F (250ºC)
Nylon tubes (Rilsan) can be used in most cases. Transparent tubes are not resistant to UV
exposure and should therefore not be used for outdoor applications. Black or colored
nylon tubing should be used when exposure to sunlight is a factor. For moving
components, use tubing that is adequate and appropriate for that application. When in
doubt, consult your tube supplier, your MEMOLUB
®
distributor, or PLI.
PLI offers tubing of various materials and diameters. This tubing is sold empty (up to 100
feet) or pre-filled with the lubricant of your choice (up to 30 feet). Please note that tubing
with an inside diameter of less than ¼” (6mm) is not recommended for grease
applications.
5.2 Table of Recommended Pipe and Tubing Lengths
The table is based on the following:
Tube internal diameter of 1/4 inch (6mm)
Threads on lube point of no less than 1/8" NPT
No inner pressure present in the component
Base-Oil Viscosity
(@ Working Temp.)
Directly
Mounted
Remote
(Single Point)
w/Splitter
MEMO
w/Distribution
Block
100 cSt ok 40ft (12m) 16ft (5m) 33ft (10m)
700 cSt ok 30ft (9m) 14ft (4m) 24ft (7m)
1000 cSt ok 26ft (8m) 13ft (4m) 20ft (6m)
1500 cSt ok 23ft (7m) 12ft (4m) 18ft (5m)
3000 cSt ok 18ft (5m) 9ft (3m) 15ft (5m)
5000 cSt ok 13ft (4m) 7ft (2m) 11ft (4m)
9000 cSt ok 7ft (2m) 3ft (1m) 7ft (2m)
15000 cSt ok 3ft (1m) N/
3ft (1m)
5.3 Fittings
A variety of adapters, tube fittings, and check valves are available from
PLI, LLC or through your MEMOLUB
®
Distributor. Push-in tube
fittings allow “instant” connection of nylon tubing to the lubricator (in
single-point applications), distribution block (for multi-point
applications), or 2-point splitter. To attach tubing, simply push the tube
into fitting until it can go no further. (Be certain that plastic tubing has a
square cut.) Holding and sealing is accomplished instantaneously. To detach tubing,
simply depress the manual release ring, then pull the tube out of the fitting. Plastic and
brass fittings are good for most applications. For high temperatures, steel and stainless
steel compression fittings are also available. Refer to the Installation Parts section of the
Appendix or call for a listing of available fittings.
MEMOLUB
®
HPS User’s Guide Page 13 of 39 PLI, LLC
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