Graco Manzel MHH [3/28] Pressure relief procedure
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Graco Manzel MHH [3/28] Pressure relief procedure

Graco Manzel MHH [3/28] Pressure relief procedure
Setup
312497A 3
Pressure Relief Procedure
Follow this Pressure Relief Procedure whenever you are
instructed to relieve pressure or check or service equipment.
1. Using a wrench, slowly loosen inlet nut.
2. Then, using a wrench, slowly loosen each port nut.
Setup
The divider valve should be ready to install in your system. It
has been factory-tested and should not require any additional
modification.
1. Install the divider valve in your system.
2. Torque. See Table 1, page 12.
As long as lubricant is supplied under pressure to the inlet
section of the divider assembly, valves sections will continue to
operate in a progressive manner. Divider assemblies always
follow a constant discharge pattern. Whenever lubricant flow
ceases, the valving pistons will stop. When flow resumes, it will
start again at the same point in the discharge cycle.
Component Identification
Table 3: Typical Divider Valve
Combinations
Divider Valves
A Series-Flo type divider valve is a manifold proportioning
device consisting of an inlet and end section plus a minimum
of three valve 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
secondary divider valve is any divider valve receiving lubricant
from the master divider valve.
Valve Sections (MSP, MHP, MHH, ZMSP and MXP
modular-type, divider valves, only)
Valve 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 (F
IG. 2).
Valve sections may be manufactured to require one or two
lube outlets. Stamping located on the face of each section
indicates:
• the style of divider valve section, i.e., MSP, MX, etc.,
• the discharge per piston stroke expressed in thou-
sandths of cubic inches (35 = .035 in
3
) and,
• the number of lube outlets required (S = single, one
outlet only; T = twin, two lube outlets required).
FIG. 1
Inlet
Section
Valve
Section
Crossport
Plate
Subplates with
Output Ports
End
Section
TI11117
Indicator/ Port Plug
End Plug
Tie Rod Nut
MASTER SECONDARY TYPE OF APPLICATION
MJ MD Machine tools, Printing, Wire
Forging & Packaging Machinery
MSP MJ, MSP Machine tools, Textile, Glass &
Can Machinery, Mobile
Equipment
MX, MXP MX, MXP, MSP Cranes, Presses, Steel Mills,
etc.
MGO MX Levellers, Shears, Conveyors,
etc.
FIG. 2
TI11102
Piston
Enclosure/End
Enclosure Plug Gasket
Piston
Indicator
Indicator Port Plug
Port
O-Rings
Check
Valve
Plug

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