Overview of Hand-Built Double Sphere Rubber Flange Expansion Joint

Rubber expansion joints are flexible connectors fabricated of nature rubber or synthetic elastomers, steel ring and fabrics, and when necessary, metallic reinforcements provide stress relief in piping systems due to thermal and mechanical vibration and/or movements. ZHW® Rubber Expansion Joints provide relief from stresses caused by thermal expansion and contraction in pipelines. Movement is always experienced in piping systems due to varying ambient temperatures, differences in temperature of materials handled, and differences in composition. Expansion joints absorb this movement and eliminate the danger of buckling or pulling apart with the high replacement costs that would result.

ZHW ® Engineers can solve anticipated problems of vibration, noise, shock, corrosion, abrasion, stresses and space by incorporating rubber expansion joints into designed piping systems.

Description

ZHW Series HD602 is a double sphere super-wide flowing arch design. It’s self-cleaning, which eliminates the need for a filled arch design and makes it the perfect choice for slurries. The Series HD601 can replace and be interchanged with hand-built narrow/wide arch, molded wide arch, and spherical type expansion joints.

Some of the notable features and benefits of the ZHW Series HD602 are:

  • Length of product customization
  • Tough quality and Widely Service
  • Absorption of Vibration, Noise and Shock
  • Wide Range of Flange Materials Available
  • Reduced Turbulence or Material Entrapment
  • Compensation for Misalignment

For more information about the features and benefits of the ZHW Series HD602, Download our brochure.

For up-to-date pricing and availability information. Contact ZHW today.

Physical and mechanical properties of rubber expansion joint
No Item Index Measured Value
inner/outer
rubber layer		 Unit(mm)
1 Tensile strength (Mpa) ≥11 13.5
2 Elongation at break(%) ≥400 560
4 Hardness (Shore A) 60±5 60
5 Brittleness temperature (℃) ≤-30 -40
6 Cohesive strength (between cord fabric) (KN/m) ≥2.0 4.8
7 Hot air aging
(100℃*48h)		 Rate of tensile strength reduction ≤25 15
Rate of ultimate elongation reduction ≤30 20
8 Mass change (10% H2SO4*Room temperature)% ≤3 2
9 Mass change (10% NaOH*Room temperature)% ≤3 2
Diameter, length and movement of double arches hand-built rubber expansion joint HD602
Diameter
DN		 Length
(mm)		 Axial movement(mm) Radial movement
(mm)		 Angular movement
(a1+d2)°
mm inch Elongation Compression
200 8〞 CUSTOMER
TO
SPECIFY
OVERSIZE
LENGTH		 50 50 55 15
250 10〞 50 50 55 15
300 12〞 60 60 65 15
350 14〞 60 60 65 15
400 16〞 60 60 65 15
450 18〞 70 70 65 10
500 20〞 70 70 65 10
600 24〞 70 70 65 10
700 28〞 75 75 70 10
800 32〞 75 75 70 8
900 36〞 75 75 70 8
1000 40〞 75 75 70 8
1200 48〞 80 80 70 6
1400 56〞 80 80 75 6
1600 64〞 80 80 75 6
1800 72〞 80 80 75 6
2000 80〞 85 85 75 4
2200 88〞 85 85 70 4
2400 96〞 85 85 70 4
2600 104〞 85 85 70 4
2800 112〞 85 85 70 4
3000 120〞 85 85 70 4
Note: Standard ZHW Type HD602 double arches hand-built rubber expansion joints shown in the table are considered Standards and if any different technical requirements please contact ZhongHaiWei.
For more accurate quotation please provide as following information:
Size & Over Length ___________________________________
Temperature ___________________________________
Application ___________________________________
Materials ___________________________________
Pressure/Vacuum with surges ___________________________________
End Drilling Pattern ___________________________________
Delivery ___________________________________
Other ___________________________________
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