© LUBRIQUIP, INC., 1963. Revised May 1996. All Rights Reserved.
DESCRIPTION
In a Trabon Series-Flo System
®
, free flow of lubricant from the
pump through the transmission system and the bearings is
necessary. If any portion of this transmission system (a divider
valve, line fitting or any bearing) does not freely accept and
pass its portion of the lubricant a blockage has occurred. This
blockage will cause a higher than normal pumping pressure to
be developed by the pump. Depending on the application or
system design, this blockage with its resultant high pump
pressure will usually cause a complete loss of lubricant flow
into the total system and no bearing will be receiving lubricant.
The loss of flow due to a blockage is first indicated with the
higher than normal system pressure that is developed by the
pump as it attempts to overcome this blockage. This abnor-
mally higher pressure that is a result of a blockage is limited,
isolated, and signalled through the use of various performance
indicators, reset and relief, incorporated into the system
design.
Divider Valve —
A Series-Flo
®
type divider valve is a manifolded proportioning
device consisting of an inlet and end section plus a minimum of
three intermediate sections. The divider valve is manifolded
together with tie rods and nuts. A master divider valve is the
first divider valve downstream from the lube pump. A second-
ary divider valve is any divider valve receiving lubricant from
the master divider valve.
Intermediate Sections —
Intermediate sections (three or more required per manifold)
contain a piston specially fitted to that section, built in outlet
check valves and various passageways that, working with the
piston, meters and valves the flow of lubricant. See Figure B.
Intermediate sections may be manufactured to require one (1)
or two (2) lube outlets. Stamping located on the face of each
section will indicate (1) the style of divider valve section (MSP,
MX, etc.), (2) the discharge per piston stroke expressed in
thousandths of cubic inches (35 = .035 in
3
) and (3) the number
of lube outlets required (S = single, one outlet only; T = twin,
two lube outlets required). See Figure A.
Warning —
Never block a lube outlet that is designed to discharge
lubricant.
Figure A. Components of the MSP Divider Valve
Figure B. Intermediate Valve & Subplate Section
Locating Blockage in Series-Flo
®
Systems
Bulletin 30101
Operation and Service Instructions
LUBRIQUIP
BY
®
and
