Home » Expansion joint » Pressure Balanced Expansion Joint » GB/T12777-2008 DN32 to DN1600 mm externally pressurized expansion joints

GB/T12777-2008 DN32 to DN1600 mm externally pressurized expansion joints

Name: GB/T12777-2008 DN32 to DN1600 mm externally pressurized expansion joints
Brand: Fustar
Rating: 5.0 (16 reviews)

Fustar externally pressurized expansion joints are designed to fluid pressure acts on the outside of the bellows element rather than on the inside,as in a conventional expansion joint.The stabilizing effect of external pressure increase the bellows capability to absorb long axial movement without squirm,making this expansion joint the best solution for many situations involving extensive axial movement.

Model:
DN150
Brand:
Fustar
Code:
73072900

Quantity:
Availability:





Inquire Add to Basket

Product Description

Product Description

Externally Pressurized Expansion Joints

The end bellows of this type externally pressurized expansion joint are connected with outer cylinder and inner cylinder respectively, and the convolution no.s of bellows are larger. externally pressurized can absorb large axial displacement under external pressure. During installation, the direction of inner sleeve should be consistent with the flow direction of the medium (flow direction mark on the expansion joint); After installation on the spot, the small ite rods must be removed; In order to reduce the force of the tube frame, this bellows expansion joints can be pre-distorted before installation(pre-pull, pre-press).


External Pressurized Expansion Joint	Drawing

NO	ITEMS	MATERIALS	NO	ITEMS	MATERIALS
1	Short connection tube	Carbon steel	7	Bellow	SS304/SS316L/SS321
2	Left ring plate	Carbon steel	8	Long connection tube	Carbon steel
3	Inner sleeve	SS304/Carbon steel	9	Middle connection tube	Carbon steel
4	Shell	Carbon steel	10	Right ring plate	Carbon steel
5	Guide ring plate	Carbon steel	11	Fixed plate	Carbon steel
6	Outer connection tube	Carbon steel	12	Flange	SS304/Carbon steel

Technique Parameter of External Pressurized Expansion Joint

Normal Diameter	Length	Axial Movements	Axial Stiffness	Joint Size D X S	Radial Max. Size D1	Working Pressure
mm	mm	mm	N/mm	mm	mm	Mpa
100	490~800	30~80	180~460	Ø108X4	340	0.25~4.0
150	500~860	32~80	169~410	Ø219X4.5	440	0.25~4.0
200	560~880	40~140	310~720	Ø219X6	529	0.25~4.0
250	560~1090	48~146	389~862	Ø273X8	570	0.25~4.0
300	720~1360	56~172	420~910	Ø325X8	650	0.25~4.0
350	720~1360	60~172	463~1059	Ø377X8	675	0.25~4.0
400	720~1360	60~172	637~1273	Ø426X10	740	0.25~4.0
500	760~1360	72~168	799~1598	Ø529X10	880	0.25~2.5
600	760~1510	72~168	1536~3568	Ø630X10	1030	0.25~2.5
700	760~1510	76~180	1815~3630	Ø720X10	1120	0.25~2.5
800	760~1510	76~180	1291~2583	Ø820X12	1260	0.25~2.5
900	760~1510	76~180	1548~2809	Ø920X12	1380	0.25~2.5
1000	760~1510	76~180	1573~2936	Ø1020X12	1480	0.25~2.5