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You are in : Products list >>Metal Expansion Joints |
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LIGHTWEIGHT STYLE 189 |
UNAFLEX® "SUPREME" Style 189 Lightweight Rubber Expansion Joints are available in round, or rectangular, with arch configurations. They are recommended for pressure and limited vacuum applications such as air, gas and water service where pressures are slight and duty not severe. |
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They feature a lighter wall and flange thickness to provide extreme flexibility. Their duck plies are reinforced with steel rings.
Style 189 Joints are also available for temperatures up to 500ºF and can be made with sleeve ends.
Max operating pressure for all sizes is 25 psi internal pressure and 1.5 inches of mercury vacuum.
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Arch |
Joint
size
I.D.
(in.) |
Face
to
Face
(in.) |
Compression
(in.) |
Extension
(in.) |
Lateral
(in.) |
| Single |
2 to 8
10 to 13
14 to 24
25 to 30 |
6
8
8
8 |
7/16
11/16
13/16
15/16 |
5/16
9/16
11/16
13/16 |
5/8
5/8
5/8
5/8 |
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Double |
2 to 5
6 to 13
14 to 24
25 to 30 |
12
12
13
13 |
7/8
1-3/8
1-5/8
1-7/8 |
5/8
1-1/8
1-3/8
1-5/8 |
1-1/4
1-1/4
1-1/4
1-1/4 |
| Triple |
2 to 5
6 to 13
14 to 24
25 to 30 |
16
16
18
18 |
1-5/16
2-1/16
2-7/16
2-13/16 |
15/16
1-11/16
2-1/16
2-7/16 |
2-1/2
2-1/2
2-1/2
2-1/2 |
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UNAFLEX® STYLES-
145, 155, 156, 157, 185
U-TYPE EXPANSION JOINTS |
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DESCRIPTION:
UNAFLEX® "SUPREME" U-Type Expansion Joints form a flexible connection between equipment outlet and inlet flanges. They are normally constructed of a natural rubber tube, several heavy plies of rubber or neoprene - impregnated fabric, and neoprene cover to protect the carcass. Maximum operating temperature is 180ºF, and the carcass will withstand full vacuum to 25 psi. They are available in the following configurations: |
RECTANGULAR (STYLE 145) with internal flange (no arch) for vacuum and pressure. They allow ample axial and lateral movement capable of withstanding 30 inches of vacuum, or 25 psi gauge internal pressure. Retaining flanges are provided for support. |
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| OVAL (STYLE 155 AND 157 ) With external flange available in Style 155 for vacuum only and Style 157 for pressure and vacuum. Used in installations where external bolting is desired. Style 155 withstands 30 inches of vacuum with standard flat steel retaining rings Style157 is designed for both 30 inches of vacuum and 25 psi gauge internal pressure and is designed with special steel fabricated support rings. |
ROUND (STYLE 156 AND 185) lightweight rubber expansion joints available in Style 156, "U type, no arch, steel reinforced for vacuum and pressure. Style 156 body is of duck and rubber without metal reinforcing. Style 185 is constructed with steel reinforcement. These units can also be supplied with offset features. |
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