Double Sphere
Rubber Expansion Joint
JOINTIB manufacture and export double sphere expansion joint with different specification. We can Offer Lifttime After-Sales Services, Factory Direct Price and ODM / OEM, help you increase brand value.
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Hi, I’m Pew from JOINTIB. Let me guide you through this page. Our company has been working so hard for more than 20 years to perfect the process of manufacturing Double Sphere Rubber Expansion Joint. Click the table of contents to know more about the products.
Gallery of Double Sphere Expansion Joint
It is also called Twin-Sphere Molded Rubber Expansion Joints. It isour most popular rubber joints, and most commonly used as a pump or equipment connector.
Advantage of Double Sphere Expansion Joint
It is built to withstand even the most rigorous piping system configurations. Its easy installation makes them the logical choice for even the toughest jobs.
NO.1
Greater movement results
Enabling customers to achieve a solution when a single sphere bellow cannot provide enough movements
NO.2
No gaskets are required
It is acheived by a machined groove in the flange
NO.3
Added strength
The bellows are reinforced with tough nylon fibre throughout
NO.4
Added rigidity
On each end where the flange fits into the rubber there is a cord with high tensile strength
NO.5
More durable
Natural rubber content of forty-seven percent, can continue to use for 15 years without aging
NO.6
Delicate and smooth
The precision-cast rubber body is delicate and smooth,and the valve body is thickened
NO.7
More Choices
More than 2000 sets of molds with diameters from DN40 to DN1000 can be produced, with many special lengths and can be customized(including connetion mode)
Applications of Double Sphere Expansion Joint
Expansion Joints play crucial roles in the smooth running of many industrial unit or system. Double Sphere Expansion Joint has good comprehensive performance, so it is widely used in many industries.
Water & Wastewater
Marine
Chemical
Food Processing
HVAC
Power
Pulp & Paper
Mining
Structure of Double Sphere Expansion Joint
| Item | Part | Material |
|---|---|---|
| 1 | Tube | EPDM/NBR/Hapylon |
| 2 | Ring Flange | Carbon Steel/Ductile Iron/SS304/SS316 |
| 3 | Support Ring | Mild Steel |
| 4 | Rubbwe Flange | EPDM/NBR/Hapylon |
| 5 | Carcass | Nylon |
We can source any other material on request, but quotes take up to 48 hours.
Specification of Double Sphere Expansion Joint
We have more than 2000 sets of molds with diameters from DN25 to DN3000 can be produced, the following table is only a part of it.
| SIZE I.D. (mm) | LENGTH F/F (mm) | MAX Pressure (bar) | VACUUM Rating (mm Hg) | Movement Capability(mm) | Flange details-DIN PN16 | Prox. Weight (kg) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comp. (mm) | Ext. (mm) | Lateral (mm) | Angular (degree) | Torsional (degree) | O.D. (mm) | B.C. (mm) | Holes (no.) | Hole (mm) | TH. (mm) | |||||
| 40 | 175 | 16 | 760 | 50 | 30 | 45 | 35 | 10 | 150 | 110 | 4 | 18 | 14 | 3 |
| 50 | 175 | 16 | 760 | 50 | 30 | 45 | 35 | 9.5 | 165 | 125 | 4 | 18 | 14 | 4 |
| 65 | 175 | 16 | 760 | 50 | 30 | 45 | 35 | 7.5 | 185 | 145 | 4 | 18 | 15 | 5 |
| 80 | 175 | 16 | 760 | 50 | 30 | 45 | 35 | 6.2 | 200 | 160 | 8 | 18 | 15 | 7 |
| 100 | 225 | 16 | 760 | 50 | 35 | 40 | 35 | 5.6 | 220 | 180 | 8 | 18 | 15 | 9 |
| 125 | 225 | 16 | 760 | 50 | 35 | 40 | 35 | 4.5 | 250 | 210 | 8 | 18 | 15 | 11 |
| 150 | 225 | 16 | 760 | 50 | 35 | 40 | 35 | 3.6 | 285 | 240 | 8 | 23 | 20 | 14 |
| 200 | 325 | 16 | 700 | 50 | 35 | 35 | 30 | 2.8 | 340 | 295 | 12 | 23 | 20 | 21 |
| 250 | 325 | 16 | 700 | 60 | 35 | 35 | 30 | 2.2 | 405 | 355 | 12 | 26 | 20 | 30 |
| 300 | 325 | 16 | 700 | 60 | 35 | 35 | 30 | 1.8 | 460 | 410 | 12 | 26 | 22 | 37 |
| 350 | 325 | 10 | 700 | 60 | 35 | 35 | 30 | 1.7 | 520 | 470 | 16 | 26 | 22 | 53 |
| 400 | 325 | 10 | 600 | 60 | 35 | 35 | 30 | 1.5 | 580 | 525 | 16 | 30 | 22 | 69 |
| 450 | 325 | 10 | 600 | 60 | 35 | 35 | 30 | 1.3 | 640 | 585 | 20 | 30 | 25 | 81 |
| 500 | 325 | 10 | 600 | 60 | 35 | 35 | 30 | 1 | 715 | 650 | 20 | 34 | 25 | 111 |
| 600 | 325 | 10 | 600 | 60 | 35 | 35 | 30 | 1 | 840 | 770 | 20 | 36 | 25 | 156 |
| 500 | 325 | 10 | 600 | 60 | 35 | 35 | 30 | 1 | 715 | 650 | 20 | 34 | 35 | 185 |
| 600 | 325 | 10 | 600 | 60 | 35 | 35 | 30 | 1 | 840 | 770 | 20 | 36 | 40 | 226 |
| 700 | 400 | 8 | 550 | 65 | 35 | 35 | 30 | 1 | 910 | 840 | 24 | 36 | 40 | 265 |
| 800 | 400 | 7 | 550 | 63 | 35 | 32 | 28 | 1 | 1025 | 950 | 24 | 39 | 40 | 302 |
| 900 | 400 | 6 | 500 | 60 | 32 | 30 | 28 | 1 | 1125 | 1050 | 28 | 39 | 35 | 328 |
| 1000 | 400 | 6 | 500 | 60 | 32 | 30 | 28 | 1 | 1225 | 1170 | 28 | 39 | 35 | 361 |
Notes:
1. Rated pressure in the above table is the maximum “working pressure”. Test pressure is 1.5 times “working pressure”, Burst pressure is 4 times ” work pressure”.
2. Normally, the flange drilling is based on DIN PN16, ANSI 150/250/300 lbs, BS PN10, JIS 10K are also available upon request.
FAQ--Things you Need to Know
To save you from worries, here are some facts you need to know about our supplies.
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How We Work Together
Our ordering process
Receive instant quote
Confirm specs
Production
Quality control
Delivery
How We Work Together
Our ordering process
Receive instant quote
Confirm specs
Production
Quality control
Delivery
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