In-line Pressure Balanced Expansion Joint
Use
Adjustment of piping, Axial deflection.
*Do not torque the bellows.
Feature
An in-line pressure balanced Expansion joint is designed to absorb axial movement and/or lateral deflection while restraining the pressure thrust by means of tie devices interconnecting the line pressure. Each bellows set is designed to absorb the axial movement and usually the line bellows will absorb the lateral deflection. This type of Expansion joint is used in a straight run of piping.
Applicable fluid: Steam, Exhaust gas, Water, Air
Applicable bellows: MF, HF
Material: SUS304, SUS316L,
*Please contact us for material.
Standard: JIS, ANSI, DIN,ASME,EJMA
Bellow material choosing
| Steel Types |
Properties and applications |
| SUS304 |
General-purpose stainless steel: Used to make general chemical equipment, food equipment and nuclear power equipment, and in construction and household supplies. |
| SUS304L |
304 ultra-low carbon steel: More resistant to intergranular corrosion than 304. Used when heat-treatment after welding is not possible. |
| SUS316 |
Stainless steel made by adding molybdenum to 304 for improved corrosion resistance. Used in items such as ship parts. |
| SUS316L |
316 ultra-low carbon steel: Has higher intergranular corrosion resistance. Used in areas requiring resistance to corrosion and pitting. |
| SUS317 |
Higher corrosion resistance than 316. Used to make equipment for applications such as papermaking and dyeing. |
| SUS317L |
317 ultra-low carbon steel: Has higher intergranular corrosion resistance than 317. |
| SUS309S |
Has higher corrosion resistance than 304. Used mainly as a heat-resistant steel. |
| SUS310S |
Has higher oxidation resistance than 309. Used mainly as a heat-resistant steel.Hi |
| SUS321 |
Made by adding titanium to 304 to increase intergranular corrosion resistance. |
| High Nickel alloy |
Has very high oxidation and heat resistance. Used in corrosive and high-temperature environments. |
Materials recommended for each temperature range
| -196ºC |
-45~-15ºC |
-15ºC~350ºC |
350ºC~450ºC |
450ºC~600ºC |
~900ºC |
| Stainless Steel |
CS |
CS |
CS |
SUS316L |
Hastelloy® |
| SUS316L |
Stainless Steel |
Stainless Steel |
Stainless Steel |
SUS310S |
Inconel® |
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Monel® |
Recommended installation instructions
- Do not drop or strike carton.
- Inspect for damage during shipment, i.e., Dents, broken hardware, water marks on carton, etc.
- Store in clean dry area where it will not be exposed to heavy traffic or damaging environments.
- Do not remove shipping bars until installation is complete.
- Do not remove any moisture-absorbing desiccant bags or protective coatings until ready for installation.
- Do not use hanger lugs as lifting lugs without approval of the manufacturer.
- Do not use chains or any lifting device directly on the bellows or bellows cover.
- Do not allow weld splatter to hit unprotected bellows. Protect with wet chloride-free insulation.
- Do not use cleaning agents that contain chlorides.
- Do not use steel wool or wire brushes on bellows.
- Do not force-rotate one end of an expansion joint for alignment of bolt holes. Ordinary bellows are not capable of absorbing torque.
- Do not hydrostatic pressure test or evacuate the system before installation of all guides and anchors.
- Do not exceed a pressure test of 1 1/2 times the rated working pressure of the expansion joint.
- Do not use shipping bars to retain thrust if tested prior to installation.
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