Baker Hughes Masoneilan 78 Series, Instruction Manual, Page: 5 / 8

Masoneilan Model 78 Series Air Filter Regulator Instructions Manual | 5
Copyright 2020 Baker Hughes Company. All rights reserved.
Troubleshooting
If at any time the regulator fails to function properly it is
recommended to replace rather than repair the device.
Parts List and Materials of
Construction
No. Part Standard Material
1 Body Aluminum Die Casting
2 Spring Casing Aluminum Die Casting
3 Bottom Cap Aluminum Die Casting
4 Knob VALOX 420
5 Lock Screw Stainless Steel
6 Adjusting Screw Stainless Steel
7 Spacer VALOX 420
8 Spring Button Zn-Cr Plated Carbon Steel
9 Spring Coated Spring Steel
10
1
Diaphragm NBR
15 Plug Guide VALOX 420
16
1
Plug Neoprene/416 Stainless Steel
17
1
Filter Sintered Polyethylene
18
1
Port Spring Stainless Steel
19
1
“O”-Ring NBR
-
21
Drain Cock Stainless Steel
22 Screw Stainless Steel
23 Pipe Plug Zinc Plated Carbon Steel
24 Aspirator VALOX 420
25 Nameplate Aluminum
1. Recommended Spare Parts
5
4
22
7
6
8
9
25
2
10
23
22
3
21
15
16
18
17
19
1
23
24