Empire Abrasive Equipment Company
Spring & Diaphragm Assembly Detail
WARNING
Never attempt to disassemble the spring assembly in the automatic Sure-Flo.
The spring is under tension and could cause injury to personnel.
MG-78 Exhaust Valve Assembly & Options
Item
Part
Number
Description
290182
Exhaust valve, MG-78 (with ceramic restrictor kit)
290184
Boron carbide upgrade for restrictor kit, extended wear, Factory Installed (option)
502081
Boron carbide upgrade replacement restrictor.
Exhaust Valve Components
Item
Part Number
Description
290183
Rebuild Kit, MG-78 (Seat & gasket, ball, diaphragm, 3 screws, drawing). (items 2, 3, 4, 14)
Note: MG-78 castings must be in good condition to use PN 290183 effectively.
1 753332
Valve
body
2
753412
Seat, valve ball (steel)
3 524132
Gasket,
seat
4
525322
Valve ball (also used on 411 & 412 valves)
5
553412
Spacer washer, steel (1/2" ID x 2" OD x 1/4" thick)
6
753392
Spacer ring, inner
7
753402
Spacer ring, outer
8
523672
Diaphragm (2 per assembly)
9 753382
Cover,
valve
10
552842
Washer (1/2" ID x 2" OD x 1/16" thick)
11
551962
Bolt, 1/2" -13 x 1-3/4"
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