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Mercer Rubber Company
1 Arch (501/HT501/601/HT601) 3 Arch (503/HT503/603/HT603) 4 Arch (504/HT504/604/HT604) Installation Info.



Caution

1. Do not install any of the products in this bulletin at pressures
or temperatures higher than the published ratings.

2. Series 500, HT500, 600 and HT600 must be installed against
standard 1/16” raised faced or flat faced flanges. Do not install
them against recessed flanges such as Victaulic without calling
the factory for proper steel filler flanges. If our rubber flanges
do not have full bearing the expansion joint will be damaged
and leak or fail.

3. Pipe system flanges must be smooth and flat. Screw in brass
inserts such as those used in check valves can damage the rubber
faces if they project above the cast flange face.

4. Water type check valves must exactly center on the rubber
flanges. Valve O.D. and I.D. must conform to raised face
dimensions.

5. Use control rods as listed on INSTALLATION page.

6. Check Chemical Resistance Guide CRG-MR1 for service
elastomer compatibility.

7. Follow INSTALLATION instructions.

Page
Size
(in)
Flange
OD
(in)
Face
to Face
(in)
Overall
Flange
Thickness(in)
Dia
Bolt
Circle
(in)
No.
of
Holes
Dia
of
Holes
(in)
Axial
Compression
(in)
Axial
Extension
(in)
Lateral
Deflection
(in)
Degrees
Angular
(degrees)
Degrees
Torsional
(degrees)
Rated
Working
Pressure †
(psig)
Minimum
Burst
Pressure †
(psig)
502
HT502
Vacuum
(in Hg)
602
HT602
Vacuum
(in Hg)
Steel
Ductile
1-1/2
5
10
7/8
1
3-7/8
4
5/8
1-1/2
1
1
23.5
5
180
540
30
--
2
6
10
7/8
1
4-3/4
4
3/4
1-1/2
1
1
19.5
5
180
540
30
--
2-1/2
7
10
7/8
1
5-1/2
4
3/4
1-1/2
1
1
16.5
5
180
540
30
--
3
7-1/2
10
7/8
1
6
4
3/4
1-1/2
1
1
15.5
5
180
540
30
--
4
9
10
7/8
1
7-1/2
8
3/4
1-1/2
1
1
12.5
5
180
540
30
--
5
10
10
7/8
1
8-1/2
8
7/8
1-1/2
1
1
11.0
5
180
540
30
--
6
11
10
7/8
1
9-1/2
8
7/8
1-1/2
1
1
10.5
5
180
540
30
--
8
13-1/2
10
7/8
1
11-3/4
8
7/8
1-1/2
1
1
10.0
5
180
540
30
--
10
16
12
1
1-1/8
14-1/4
12
1
2
1-1/4
1-1/4
9.5
5
180
540
30
--
12
19
12
1
1-1/8
17
12
1
2
1-1/4
1-1/4
8.8
5
180
540
30
--
14
21
12
1
1-1/8
18-3/4
12
1-1/8
2
1-1/4
1-1/4
8.3
4
180
540
30
--
16
23-1/2
12
1
1-1/8
21-1/4
16
1-1/8
2
1-1/4
1-1/4
7.8
4
180
540
30
--
18
25
12
1-1/8
1-1/4
22-3/4
16
1-1/4
2
1-1/4
1-1/4
7.5
3
180
540
30
--
20
27-1/2
12
1-1/8
1-1/4
25
20
1-1/4
2
1-1/4
1-1/4
7.5
3
180
540
30
--
22
29-1/2
14
1-1/8
1-1/4
27-1/4
20
1-3/8
2-1/2
1-1/2
1-1/4
7.3
3
180
540
30
--
24
32
14
1-1/8
1-1/4
29-1/2
20
1-3/8
2-1/2
1-1/2
1-1/4
7.0
3
180
540
30
--
26
34-1/4
14
1-1/8
1-1/4
31-3/4
24
1-3/8
2-1/2
1-1/2
1-1/4
7.0
3
180
540
30
--
28
36-1/2
14
1-1/8
1-1/4
34
28
1-3/8
2-1/2
1-1/2
1-1/4
7.0
3
180
540
20
30
30
38-3/4
14
1-1/8
1-1/4
36
28
1-3/8
2-1/2
1-1/2
1-1/4
7.0
3
180
540
20
30
34
43-3/4
14
1-1/8
1-1/4
40-1/2
32
1-5/8
2-1/2
1-1/2
1-1/4
6.8
3
180
540
20
30
36
46
14
1-1/8
1-1/4
42-3/4
32
1-5/8
2-1/2
1-1/2
1-1/4
6.5
3
180
540
20
30
40
50-3/4
14
1-1/8
1-1/4
47-1/4
36
1-5/8
2-1/2
1-1/2
1-1/4
6.5
3
130
390
20
30
42
53
16
1-1/8
1-1/4
49-1/2
36
1-5/8
3
1-3/4
1-1/2
6.5
2
130
390
15
30
44
55-1/4
16
1-1/8
1-1/4
51-3/4
40
1-5/8
3
1-3/4
1-1/2
6.5
2
130
390
15
30
48
59-1/2
16
1-1/8
1-1/4
56
44
1-5/8
3
1-3/4
1-1/2
6.5
2
130
390
15
30
50
61-3/4
16
1-1/8
1-1/4
58-1/4
44
1-7/8
3
1-3/4
1-1/2
6.3
2
110
330
15
30
54
66-1/4
16
1-1/8
1-1/4
62-3/4
44
1-7/8
3
1-3/4
1-1/2
6.3
2
110
330
15
30
56
68-3/4
16
1-1/8
1-1/4
65
48
1-7/8
3
1-3/4
1-1/2
6.3
2
75
225
15
30
60
73
16
1-1/8
1-1/4
69-1/4
52
2
3
1-3/4
1-1/2
6.0
2
75
225
15
30
62
75-3/4
16
1-1/8
1-1/4
71-3/4
52
2
3
1-3/4
1-1/2
6.0
2
75
225
15
30
66
80
16
1-1/8
1-1/4
76
52
2
3
1-3/4
1-1/2
6.0
2
75
225
15
30
72
86-1/2
16
1-1/8
1-1/4
82-1/2
60
2
3
1-3/4
1-1/2
5.9
2
75
225
15
30
78
93
16
1-1/8
1-1/4
88-3/4
60
2-1/8
3
1-3/4
1-1/2
5.9
2
75
225
15
30
84
99-3/4
16
1-1/8
1-1/4
95-1/2
64
2-1/8
3
1-3/4
1-1/2
5.8
2
75
225
15
30
90
106-1/2
16
1-1/8
1-1/4
102-1/4
68
2-1/4
3
1-3/4
1-1/2
5.8
2
55
165
15
30
96
113-1/4
16
1-1/8
1-1/4
108-1/2
68
2-1/2
3
1-3/4
1-1/2
5.7
2
55
165
15
30
98
115-1/2
16
1-1/4
1-3/8
110-3/4
68
2-1/2
3
1-3/4
1-1/2
5.6
2
35
105
15
30
100
117-3/4
16
1-1/4
1-3/8
113
68
2-1/2
3
1-3/4
1-1/2
5.6
2
25
75
15
30
102
120
16
1-1/4
1-3/8
114-1/2
72
2-1/2
3
1-3/4
1-1/2
5.6
2
25
75
15
30
108
126-3/4
16
1-1/4
1-3/8
120-3/4
72
2-1/2
3
1-3/4
1-1/2
5.4
2
25
75
15
30
120
140-1/4
16
1-1/4
1-3/8
132-3/4
76
2-1/2
3
1-3/4
1-1/2
5.4
2
20
60
15
30
132
153-3/4
16
1-1/4
1-3/8
145-3/4
80
2-1/2
3
1-3/4
1-1/2
5.3