Expansion Bellows Series EBF521
Expansion Bellows Series EBF521

[Name]:Expansion Bellows Series EBF521

[PN]: 0.6~2.5Mpa 

[Medium]: Air, water, seawater, oil, slurry, weak acid, alkali, etc.

[Material]: Sainless Steel

[Certification]: ISO9001:2008, ISO14001:2004, ISO18001:2007

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Overview

ZHW expansion bellows have been designed to control vibration, reduce noise, relieve stress, prevent system shock and compensate for misalignment and movement. Use of braided metal connectors for applications such as pumps, compressors, and other mechanical equipment will enhance the overall operation of the system.

 

Flexible metal hose by itself, when subjected to high pressure can over-extend past the ability to operate properly. It is necessary, therefore, to include an external flexible restraint (i.e., braid) to withstand the specified internal pressure and prevent excessive elongation. Braid, (woven metal) is designed to fit snugly over metal hose and is fastened to the ends of both hose and fittings. This braid is designed to be strong enough to withstand elongation for the full pressure rating of the hose.

 

Flexible metal hose and braid can be made from a variety of different metals to meet industry needs. Specification of the hose and braid is determined by temperature, pressure, flow media, application and external environment. Common materials used for braided flexible metal connectors are 321 stainless steel hose and a 304 stainless steel braid and are carried in stock by ZHW products. The products contained in this catalog are representative of the typical sizes, lengths and materials found for pump connectors; however, other materials and lengths are available and can be ordered per customer specification.

 

Description

ZHW's expansion bellows Series EBF521 are specifically designed for piping applications requiring limited absorbtion of axial and lateral movements. Where small thermal movements are involved and proper anchoring and guiding is feasable, ZHW's Single-Flex "EBF" series expansion joint system provides the most economical installation. Single-Flex is the base member of ZHW metal expansion bellows family, consisting of a bellows element and end fittings.

 

  • Absorbs and isolates troublesome pipeline vibrations
  • Smooths out force-pump system pulsations
  • Tranquillizes jittering compressor pipelines
  • Also absorbs pipeline expansion, compensates for misalignment, eliminates piping stresses.
  • Ends costly failure and downtime caused by pipeline vibration transmissions
  • Customized to solve your vibration problem

For more information about the features and benefits of the ZHW Expansion Bellows Series EBF521, Download our brochure.

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

Specification

No. Name Qty Material
1 Main body 1 QT450-10, Q235A
2 Seal ring 1 NBR, CR, EPDM
3 Gland 1 QT450-10, Q235A
4 Limited short pipe 1 Q235A
5 Nut n Q235A, 20#
6 Long bolt n Q235A, 35#
7 Short bolt n Q235A, 35#

 

Nominal diameter Outer diameter Dw of pipe Size of flange connection Total length Expansion movement Qulity/kg
Outer diameter D of flange Diameter D1 of central circle in the bolt hole Diameter do of bolt hole Bolt
n/tuit Th.
65 76 160 130 14 4 M12 340 25 13.1
80 89 190 150 18 M16 15.1
100 114 210 170 21.6
125 140 240 200 8 27.6
150 168 265 225 34.1
200 219 320 280 42.4
250 273 375 335 12 58.8
300 325 440 395 22 M20 370 32.5 69.8
350 377 490 445 86.1
400 426 540 495 16 98.1
450 480 595 550 112.3
500 530 645 600 20 138.3
600 630 755 705 26 M24 173.4
700 720 860 810 24 211.1
800 820 975 920 30 M27 600 65 380.9
900 920 1075 1020 472.1
1000 1020 1175 1120 28 538.2
1200 1220 1405 1340 33 32 M30 749.8
1400 1420 1630 1560 36 36 M33 640 1034.8
1600 1620 1830 1760 40 1405.6
1800 1820 2045 1970 39 44 M36 1658.5
2000 2020 2265 2180 42 48 M39 1975.2
2200 2220 2475 2390 52 2460.7
2400 2420 2685 2600 56 2751.4
2600 2620 2905 2810 48 60 M45 710 70 2905.4
2800 2820 3115 3020 64 3175.8
3000 3020 3315 3220 68 3472.3
3200 3220 3525 3430 72 3824.6
3400 3420 3735 3640 76  
3600 3620 3970 3860 56 80 M52  

Order Instruction

For more accurate quotation pls send us more details about the products you need:

1. What's the DN and PN?

2. What's the material?

3. What's the connection(flange or thread)?

4. What's the standard(ANSI, DIN, BS, JIS)?

5. What's the medium working with?

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   TEL: 0086-371-85765862

   Fax: 0086-371-85765388

   Email:Info@zhwgroup.net

   Web: www.zhwgroup.net

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