in-Line Pressure Balanced Expansion Joint

• Customization: Available
• Connection Type: Flange
• Diameter: DN6-80
• Material: Stainless Steel
• Temperature Classification: High Temperature Piping
• MPa Classfication: Ultra High Pressure Piping
• Standard: ASTM, GB, API, DIN, JIS
• Medium: Liquid
• Cross-Section Shape: Round
• Transport Package: Carton, Fiber Container, Wooden Box
• Specification: DN6-80
• Trademark: ZhiXing
• Origin: China

Product Description

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®
					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.