Double Sphere Screwed Rubber Expansion Joints

Table of Materials       

Serial No.	Portion	Material
1	Main body	Polarized rubber
2	Lining	Nylon cord fabric
3	Frame	Hard steel wire
4	Union	Forgeable cast iron

Techmical Consition

Parameter	3/4" --- 3"
Working pressure (MPa)	1.0
Bursting Pressure (MPa	3.0
Vacuity (mmHg)	400

Table of Nominal Core Diameter of Pige,Axial displacement,and Lateral Displacement

Nominal core dia.DN		L Value （mm)		Axial displacement (mm)		Lateral displacement
(mm)	（in.）			Stretch(mm)	Compression
15	1/2	200		6	22	45
20	3/4	200		6	22	45
25	1	200		6	22	45
32	1 1/4	200		6	22	45
40	1 1/2	200		6	22	45
50	2	200		6	22	38
65	2 1/2	200	240	6	22	38
80	3	200	240	6	22	38