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Four Sphere Rubber Expansion Joint

1. Rubber Joint reasonable structure; High flexibility
2. Rubber: EPDM NBR NR CR IIR
3. Pressure: 0, 6-1.6MPa
4. Good quanlity&cheap

Flexible Rubber Joint Features and Benefits:

1. Absorbs Directional Movement
2. Less Turbulence or Material Entrapment
3. Absorbs Vibration, Noise and Shock

Features:
1. This product could primarily reduce the vibration and the noise of the piping system, completely solve the different piping problems as displace of joint, axial flex and etc.
2. According to different material requirement, product could be made as acid proof, corrosion proof to suit different medium and environments.
3. The materials are good sealing, light weighting, easy to fix and maintain, also has long-working expecting. But please keep far away from sharp metal in order to avoid breaking of the rubber body.
4. For flanges of other standards or non-standards. It is necessary to be agreed upon separately. Please specify standard of furnish diagram and relative parameter. We will manufacture accordingly. Rubber material may be selected according t your requirement.
5. Anti-corrosion: EPDM and NBR rubber can bear high temperature and can anti-corrosion.
6. Double sphere flange end rubber joint: The rubber body has two bridges. It can bear more pressure and the length is long than single sphere rubber joint.
7. The size can made as customer's drawing, we can make mould for special type.
8. They are cost effective, the total cost is low because of rubber is cheap and it have long use life.

Our products have the following character:
Good select materials, advanced equipment, skillful workmanship, rigorous quality control standards, attractive design and durability. They are well-known for excellent quality, most competitive price, and lower cost and prompt delivery.
The product is made up of the composite rubber ball, including internal rubber layer, nylon fabric, and external rubber layer and the loose metal flange. With the merits of high pressure, stable elasticity, big displacement, good damping capacity and noise reduction, it is widely used in the systems of water supply, drainage, water circulation, heating and ventilating, and air conditioning, and the piping systems of the paper-making, the petrochemical industry, marine, compressors pumps, fans, etc

Delivery time:
Within 30 days after receipt of the deposit, or as your request

Packaging details:
Unfumigation wooden case (out package) and plastic film and textile membrane(inside
package). We can make change as your request.

Physical and Mechanical Properties Form
No	Item		Index		Test value
			Inner rubber	Outer rubber
1	≥Tensile strength(MPa)		12	13	13.6
2	≥Break strength (%)		450	500	564
3	≤Break permanent deformation (%)		25	30	22
4	≤Brittleness temperature		-30	-30	-40
5	≥Viscosity(KN/m)		2.0	2.0	5.6
6	Aging hot air   (100degree×48h)	Tensile strength change (%)	+25~-25	+25~-25	20
		Tensile rate change (%)	+10~-30	+10~-30	5
7	≥Acid resistant10%H2SO4×168h		0.7	0.7	0.85
8	≥Alkali proof10%NaOH1×68h		0.7	0.7	0.85

 Material list:

No	Name	Material
1	Inner rubber	ⅡR、CR、EPDM、NR、NBR
2	Outer rubber	ⅡR、CR、EPDM、NR、NBR
3	Framework layer	Polyester cord fabric
4	Reinforcing bar	Polyester cord fabric
5	Flange	Q235

DN		FF Length (mm)	Axis displacement		Radial displacement	Deflexion displacement
mm	inch		Extension	Compression
300	12″	500	100	130	80	±12°
350	14″	500	100	130	80	±12°
400	16″	500	100	130	80	±12°
450	18″	600	120	160	85	±12°
500	20″	600	120	160	85	±12°
600	24″	600	120	160	85	±12°
700	28″	600	120	160	85	±12°
800	32″	600	120	160	85	±12°
900	36″	600	120	160	85	±12°
1000	40″	600	140	180	95	±12°
1200	48″	600	140	180	95	±10°
1400	56″	650	140	180	95	±10°
1600	64″	650	140	180	95	±10°
1800	72″	650	140	180	95	±10°
2000	80″	650	170	200	100	±10°
2200	80″	700	170	200	100	±10°
2400	96″	700	170	200	100	±10°
2600	104″	700	170	200	100	±10°
2800	112″	700	170	200	100	±10°
3000	120″	700	170	200	100	±10°