Graco MGO User Manual

MGO™ Series-Flo® Dividers

DESCRIPTION

Trabon MGO Series-Flo® Divider Valves are designed for heavy
duty service where, wide temperature variations and high
pumping volumes may be expected. Ideal for large circulating oil
systems or hydraulic balancing systems which are found in paper
and rubber mills.

A typical MGO Series-Flo® Divider Valve Assembly (to the right)
consists of an inlet section, end section and three valve sections.
This basic system will serve up to six points and, by adding valve
sections, it is possible to increase the number of points which can
be served up to a maximum of 22.

The MGO valve sections are available in various output per piston
cycle (see specifications). Each twin (T) section has 2 outlets, one
from each side of the section. Each single (S) section has 1 outlet
on either side but one outlet must be plugged to operate properly.

FEATURES/BENEFITS

Delivers metered amount of lubricant.•

High Pressure capability•

Lubricant outlets easily added or removed•

Can be installed on new or existing machines•

Valve bores match hone-fitted to metering pistons•

Viton O-ring seals standard•

OPERATION

Operational sequence of an MGO Series-Flo® divider valve
assembly is defined as “progressive”. The term progressive
means that each valve section completes its piston stroke,
discharging a measured amount of lubricant to the bearing it
serves before the following valve section operates. As long as
lubricant is supplied under pressure to the inlet section of the
divider assembly, valve 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.

TORQUE SPECIFICATIONS

Tie Rod Nut 12 ft lbs

Enclosure Plug 15 ft lbs

Outlet Port Plug 6-8 ft lbs

SPECIFICATIONS

Material Zinc Plated Steel and Phosphate Coated Cast Iron

Seals Viton and Buna-N

Max Recommended
Operating Pressures

3-7 Section Divider 6,000 psi (414 bar)

8 Section Divider 5,500 psi (380 bar)

9 Section Divider 5,000 psi (345 bar)

10 Section Divider 4,500 psi (311 bar)

11 Section Divider 4,000 psi (276 bar)

Lubricant Oil or Grease

Max Operating Temp 200ºF

Max Cycle Rate

Cycle Pin & Switch 60 cycles/minute

w/out Switch or
w/FSM Type Switch

Net Weight (Divider Valve Assembly Approx.)

3 Section Divider 45 lbs (20.46 kg)

4 Section Divider 53 lbs 5 oz (24.18 kg)

5 Section Divider 61 lbs 10 oz (27.95 kg)

6 Section Divider 70 lbs 15 oz (32.17 kg)

7 Section Divider 80 lbs 4 oz (36.40 kg)

8 Section Divider 89 lbs 9 oz (40.62 kg)

9 Section Divider 98 lbs 14 oz (44.84 kg)

10 Section Divider 108 lbs 3 oz (49.07 kg)

11 Section Divider 117 lbs 8 oz (53.40 kg)

+

Section Sizes

150T 0.150 2.048

150S 0.300 4.917

300T 0.300 4.917

300S 0.600 9.834

450T 0.450 7.375

450S 0.900 14.751

600T 0.600 9.834

600S 1.200 19.668

+

This number is stamped on each valve section

*This is the discharge volume per outlet after one complete cycle

200 cycles/minute

Displacement

*(cu.in.) (cm

3

)

Trabon® MGO™ Series-Flo® Dividers

DIMENSIONS Inches/(mm) ORDERING INFORMATION

MGO – XX – XXX – X – XX

NUMBER OF SECTIONS

03 – Three
04 – Four
05 – Five
06 – Six
07 – Seven
08 – Eight
09 – Nine
10 – Ten
11 – Eleven

SECTION CAPACITY

150 – 0.150 cu.in.
300 – 0.300 cu.in.
450 – 0.450 cu.in.
600 – 0.600 cu.in.

TYPE OF SECTION

T – Twin
S – Single - Right Hand Outlet
L – Single - Left Hand Outlet
B – Twin w/Cycle Pin Right Side
C – Single w/Cycle Pin Right Side - Right Hand Outlet
D – Single w/Cycle Pin Right Side - Left Hand Outlet
E – Twin w/Proximity Switch Right Side

Note: Millimeter dimensions appear in parentheses below
decimal figure in inches.

Divider

Valve A—DIM. B—DIM. C—DIM.

MGO - 3 10.04 (255.1) 11.00 (279.4) 8.58 (217.8)

MGO - 4 11.78 (299.1) 12.75 (323.8) 10.31 (261.9)

MGO - 5 13.51 (343.2) 14.50 (368.3) 12.05 (305.9)

MGO - 6 15.25 (387.3) 16.25 (412.7) 13.78 (350.4)

MGO - 7 16.98 (431.2) 18.00 (467.2) 15.51 (394.0)

MGO - 8 18.71 (467.8) 19.75 (501.6) 17.25 (438.0)

MGO - 9 20.45 (519.3) 21.50 (546.1) 18.98 (482.1)

MGO - 10 22.18 (563.4) 23.25 (590.5) 20.72 (526.1)

MGO - 11 23.91 (607.3) 25.00 (635.0) 22.4 (570.2)

Divider Assembly Sketch Example
MGO-4-450TCR-300S-600T-150C
Divider Valve With Indicator

F – Single w/Proximity Switch Right Side - Right Hand Outlet
G – Single w/Proximity Switch Right Side - Left Hand Outlet
H – Twin w/Cycle Pin Left Side
J – Single w/Cycle Pin Left Side - Right Hand Outlet
K – Single w/Cycle Pin Left Side - Left Hand Outlet
M – Twin w/Proximity Switch Left Side
N – Single w/Proximity Switch Left Side - Right Hand Side
P – Single w/Proximity Switch Left Side - Left Hand Side

*CROSSPORTING OPTION

CR – Right Hand Side
CL – Left Hand Side
CB – Both Sides
*Omit when not required

NOTES:

Maximum working pressures: See page 1 Specs1.

Capacity sections are specified starting from inlet section2.

When a section is crossported, its outlet is plugged and output is diverted to 3.
the next section, farthest from the inlet

Single capacity sections can be crossported on one side only4.

Internal crossporting can be supplied on a capacity sec tion only when supplied 5.
on a manifolded assembly. If supplied as a loose unit, internal crossporting
may be accomplished by field drilling

Last section, farthest from inlet section, cannot be crossported6.

Indicate crossport option after capacity section if required, omit if not required7.

Preferred mounting is with pistons in horizontal position with inlet at top8.

Use discharge check valves for intermittent operation9.

Contact factory for availability of NPSF ported dividers10.

Divider systems should be limited to first and second stages only. Third 11.
staging is not recommended. Refer to Trabon bulletins L20101, L20105 and
L20115 for further in formation on system design

L10141

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