Page 6
5/8
3/8
GROUNDING RING
DIMENSIONS
D
1/4
GROUNDING RING
ORDERING INFORMATION
C
Bore
1/8”
A
1.5.1
Grounding Rings
Grounding rings may be required whenever meters are installed in non-metallic or lined pipes.
Grounding rings placed before and after the meter eliminate electrical noise that will interfere
with the proper operation of the meter. GREYLINE provides grounding rings as an optional
accessory. Grounding ring dimensional information and part numbers are listed below. For proper
operation, grounding rings are required before and after the meter.
Typical Installation
Non-conductive Pipe
ANSI Class 150
316 Stainless Steel
Grounding Rings (pair)
Nominal
Size
GREYLINE
Part
1”
19265
1½”
19266
2”
19267
3”
19268
4”
19269
6”
19270
8”
19271
10”
19272
12”
19273
14”
19274
16”
19275
18”
19276
20”
19277
24”
19278
30”
19279
36”
19280
42”
19281
1.5 ADDITIONAL HARDWARE THAT MAY BE REQUIRED
Grounding Rings
Grounding Ring Dimensions
Nominal Size
Bore
A
C
D
1”
1 - 1/16
2 - 5/8
4 - 9/16
1 - 15/16
1.5”
1 – 9/16
3 – 3/8
5 - 5/16
1 - 15/16
2”
2 – 1/16
4 – 1/8
6 - 1/16
1 - 15/16
3”
3 – 1/16
5 – 3/8
7 - 5/16
1 - 15/16
4”
4 – 1/16
6 – 7/8
8 - 13/16 1 - 15/16
6”
6
8 – 3/4
10 - 11/16 1 - 15/16
8”
8
11
12 - 15/16 1 - 15/16
10”
9 – 1/2
13 – 3/8
15 - 5/8
2 - 1/4
12”
11 – 9/16 16 – 1/8
18 - 9/16
2 - 7/16
14”
13 – 1/2
17 – 3/4
20 - 3/8
2 - 5/8
16”
15 – 1/4
20 – 1/4
22 - 7/8
2 - 5/8
18”
17 – 3/8
21 – 5/8
24 - 1/4
2 - 5/8
20”
19
23 - 7/8 26 - 11/16 2 - 13/16
24”
23
28 – 1/4
31 - 1/8
2 - 7/8
30”
29
34 – 3/4
38
3 - 1/2
36”
35
41 – 1/4
45 - 1/4
4
42”
41
48
52 - 1/2
4 - 1/2
