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By pass pressure balance type bellows compensator is composed of internal pressure working wave and external pressure balance wave, and its volume is small. The instability wave number added to the product is twice that of the straight pipe pressure balance compensator, because the middle two groups of bellows are subject to external pressure and have good stability. It is mainly used to absorb axial and lateral displacement and balance the pressure and thrust of bellows. The straight pipe external pressure bypass type pressure balance type bellows compensator adopts the structure design of double bellows connected dynamic shunt balance chamber, that is, when absorbing or compensating the deformation of the pipeline, the two bellows are respectively in tension (pressure) or pressure (tension) state, showing internal pressure or external pressure, which changes the stress state of bellows and makes it more reasonable, so as to balance (eliminate) the internal pressure of medium in the pipeline The additional lateral thrust generated by the blind end variable cross section or elbow to the end fixed support of the pipeline releases the internal stress of the pipeline and the fixed support, prolongs the service life of the pipeline, and greatly reduces the volume of the fixed support. The guiding device greatly improves the compensation capacity of the bellows compensator. Ensure the safe operation of the pipeline.

[product name]: bzzpp by-pass straight pipe pressure balance corrugated compensator

By pass bellows compensator pressure balance bellows compensator

[product specification]: [dn32mm-dn4000mm]

[product pressure]: 0.6-2.5mpa

[product certification]: ISO9001-2008

[scope of application]: [weak acid, weak base, weak corrosion, oil, hot water, cold water, etc.]

[product material]: carbon steel, ductile iron, stainless steel

[product color]: blue, color matching according to customer requirements

[operating temperature]: - 40 ℃ to 80 ℃

  • Quality stability: the implementation of the whole process of quality monitoring, meticulous, all-round detection!
  • Reasonable price: efficient internal cost control, reduce expenses, and benefit customers!
  • Fast delivery: advanced production line, sufficient stock, shorten the delivery time!
  •  Bzzpp by-pass straight pipe pressure balance corrugated compensator

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Purchase hotline: 021-6221-2627

Product advantages

The utility model can avoid the leakage of toxic and explosive pressure pipes to the industrial pipelines and equipment to ensure the safety of the pipelines and pipelines. Its products are characterized by high temperature resistance, high pressure resistance, corrosion resistance, fatigue resistance and wear resistance. It is composed of two identical bellows, end ring, head and outer pipe. It is mainly composed of two working bellows at both ends and a balance bellows in the middle as well as tie rod and end plate. It is mainly used to absorb axial displacement and balance the pressure push force of bellows

Product features

By pass pressure balanced bellows expansion joint has the advantages of small volume, low cost, good guidance and good stability. It is mainly used to absorb the axial displacement and balance the pressure and thrust of bellows. The internal pressure thrust load is balanced and borne by its own components, which is used for occasions with small thrust. It is mainly used in the situation where no fixed support is needed, which can effectively protect the equipment and pipeline from deformation.

classic case

Nantong Chonghai water plant has signed the compensator purchase agreement with Shanghai Luoying

After the realization of the goal of letting the children of the river and the sea drink the water from the Yangtze River, the water supply of Nantong urban area has soared. The first phase of the newly-built Chonghai water plant has been operating at full capacity since the date of completion. In order to ensure that the regional water supply is sufficient and of high quality, Chonghai water plant phase II has entered the construction site.
What is under construction is a clean water tank with a capacity of 50000 cubic meters, which is used for temporary storage of prepared water and then transferred to various counties and districts. The bottom area of the pool is the size of 36 basketball courts, and it requires 16000 cubic meters of concrete and more than 2000 tons of steel. At present, the purpose of the construction is to grasp the construction period of the construction site.
After the completion of the clean water tank, the sand filter, sedimentation tank and other advanced treatment projects will be started in succession. By the end of this year, it is estimated that the water supply project will be completed and accepted with an investment of 340 million yuan.
The compensator products provided by Shanghai Luoying to Nantong Chonghai water plant can effectively improve the stability of pipeline operation and extend the service life of pipeline lines to a certain extent. By pass pressure balanced bellows expansion joint has the advantages of small volume, low cost, good guidance and good stability. It is mainly used to absorb the axial displacement and balance the pressure and thrust of bellows. The internal pressure thrust load is balanced and borne by its own components, which is used for occasions with small thrust. It is mainly used in the situation where no fixed support is needed, which can effectively protect the equipment and pipeline from deformation.

Product diagram

 Bzzpp by-pass straight pipe pressure balance corrugated compensator

Parts materials

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technical parameter

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 Bzzpp by-pass straight pipe pressure balance corrugated compensator

Nominal diameter dnmm Sum of wave n Pressure grade MPa Max radial size mm Pressure and related length LMM
zero point six one Connection tube J Flange f
Axial compensation mm axial stiffness n / mm 0.6Mpa 1.0Mpa 0.6Mpa 0.1Mpa
one hundred sixteen 77/212 61/444 two hundred and thirty one thousand one hundred and fourteen one thousand one hundred and six one thousand one hundred and twenty-four one thousand one hundred and sixteen
thirty-two 154/106 122/222 one thousand five hundred and seventy-seven one thousand five hundred and sixty-one one thousand five hundred and eighty-seven one thousand five hundred and seventy-one
one hundred and twenty-five sixteen 80/241 61/519 two hundred and eighty one thousand one hundred and seventy-five one thousand one hundred and sixty-six one thousand one hundred and eighty-five one thousand one hundred and seventy-six
thirty-two 160/121 122/260 one thousand six hundred and forty one thousand six hundred and twenty-one one thousand six hundred and fifty one thousand six hundred and thirty-one
one hundred and fifty sixteen 80/274 60/599 three hundred and twenty-five one thousand two hundred and fifteen one thousand two hundred and five one thousand two hundred and twenty-five one thousand two hundred and fifteen
thirty-two 160/137 120/300 one thousand six hundred and eighty one thousand six hundred and sixty one thousand six hundred and ninety one thousand six hundred and seventy
two hundred sixteen 122/424 100/696 four hundred and twenty-six one thousand five hundred and seventy-six one thousand five hundred and sixty-five one thousand and six hundred one thousand five hundred and eighty-five
thirty-two 244/212 200/348 two thousand two hundred and twenty-two two thousand and two hundred two thousand two hundred and forty-six two thousand two hundred and twenty
two hundred and fifty sixteen 120/494 97/843 five hundred and twenty-nine one thousand six hundred and seventy one thousand six hundred and fifty-eight one thousand six hundred and ninety-four one thousand six hundred and eighty-seven
thirty-two 240/247 194/422 two thousand three hundred and ten two thousand two hundred and eighty-seven two thousand three hundred and thirty-four two thousand three hundred and seven
three hundred sixteen 154/439 126/719 six hundred and thirty one thousand nine hundred and fifteen one thousand and nine hundred one thousand nine hundred and forty one thousand nine hundred and twenty-four
thirty-two 308/220 252/360 two thousand six hundred and sixty-eight two thousand six hundred and forty two thousand six hundred and ninety-six two thousand six hundred and sixty-four
three hundred and fifty sixteen 153/491 123/815 six hundred and seventy two thousand and ten one thousand nine hundred and ninety-six two thousand and thirty-four two thousand and twenty
thirty-two 306/246 246/408 two thousand seven hundred and sixty-three two thousand seven hundred and thirty-three two thousand seven hundred and eighty-seven two thousand seven hundred and fifty-seven
four hundred sixteen 151/543 121/908 seven hundred and twenty two thousand one hundred and twenty-eight two thousand one hundred and fourteen two thousand one hundred and fifty-two two thousand one hundred and sixty-eight
thirty-two 302/272 242/454 two thousand eight hundred and eighty-five two thousand eight hundred and fifty-five two thousand nine hundred and ten two thousand eight hundred and eighty
four hundred and fifty sixteen 149/598 119/1006 eight hundred and twenty two thousand one hundred and seventy-four two thousand one hundred and sixty two thousand and two hundred two thousand one hundred and eighty-four
thirty-two 298/229 238/503 two thousand nine hundred and twenty-five two thousand eight hundred and ninety-five two thousand nine hundred and fifty two thousand nine hundred and ten
five hundred sixteen 146/654 116/1104 nine hundred and twenty two thousand two hundred and seventy two thousand two hundred and fifty-four two thousand two hundred and ninety-four two thousand two hundred and seventy-eight
thirty-two 292/327 232/552 three thousand and eighteen two thousand nine hundred and eighty-eight three thousand and forty-two three thousand and twelve
six hundred sixteen 168/734 167/1330 one thousand one hundred and twenty three thousand and ten three thousand and eight three thousand and thirty-four three thousand and thirty-two
thirty-two 336/367 334/665 four thousand one hundred and seventy-eight four thousand one hundred and seventy-seven four thousand and two hundred four thousand and two hundred
seven hundred twelve 166/1067 167/1911 one thousand two hundred and twenty three thousand two hundred and seventy-two three thousand two hundred and seventy-four three thousand and three hundred three thousand and three hundred
twenty-four 332/534 334/956 four thousand five hundred and sixteen four thousand five hundred and seventeen four thousand five hundred and forty four thousand five hundred and forty
eight hundred twelve 163/1173 166/2071 one thousand three hundred and twenty three thousand four hundred and fifty-two three thousand four hundred and fifty-three three thousand four hundred and seventy-six three thousand four hundred and seventy-seven
twenty-four 326/587 332/1036 four thousand six hundred and ninety-three four thousand six hundred and ninety-six four thousand seven hundred and seventeen four thousand seven hundred and twenty
nine hundred twelve 160/1286 164/2232 one thousand five hundred and twenty three thousand six hundred and sixty three thousand six hundred and sixty-two one thousand six hundred and eighty-four three thousand eight hundred and sixty-eight
twenty-four 320/643 328/1116 four thousand nine hundred and thirty five thousand one hundred and forty-seven four thousand nine hundred and fifty-four five thousand one hundred and seventy
one thousand twelve 199/959 197/2483 one thousand six hundred and twenty three thousand eight hundred and seventy three thousand eight hundred and sixty-four three thousand eight hundred and ninety-four three thousand eight hundred and ninety
twenty-four 398/480 374/1242 five thousand one hundred and fifty-nine five thousand one hundred and forty-seven five thousand one hundred and eighty-three five thousand one hundred and seventy
one thousand and one hundred twelve 196/1035 185/2679 one thousand seven hundred and twenty four thousand and twenty-eight four thousand and twenty-two four thousand and sixty-two four thousand and sixty-two
twenty-four 392/518 370/1340 five thousand three hundred and sixteen five thousand three hundred and three five thousand three hundred and forty five thousand three hundred and thirty
one thousand and two hundred twelve 194/1111 186/2877 one thousand nine hundred and twenty four thousand one hundred and eighty-eight four thousand one hundred and eighty-two four thousand two hundred and twelve four thousand two hundred and six
twenty-four 388/556 366/1439 five thousand four hundred and seventy-four five thousand four hundred and sixty-three five thousand and five hundred five thousand four hundred and eighty-seven

Product service

Professional manufacturing, professional services, Luoying to create more value for you!
Constantly improve the quality of service, excellence, "sincere service" is the eternal theme of Luo Ying. Luo Ying strictly in accordance with ISO9001-2000 quality system certification requirements, strict quality control, responsibility to people, to ensure the healthy operation of production, sales and service. To strengthen communication with users, we will wholeheartedly provide customers with high-quality products and perfect services. Hereby, Luo Ying makes the following commitments:

Product standards
The products are designed, manufactured and accepted in strict accordance with Chinese GB, Hg standards and American API standards. The width of sealing surface exceeds the national standard.
Pre sales service
Product introduction, technical exchange, non-standard product design, troubleshooting.
In sale service
1. Keep the contract, ensure timely supply, keep in touch with customers at any time. 2. For special or complex products, our factory arranges technical personnel to train and guide users in the use, troubleshooting, adjustment and maintenance of products.
after-sale service
1. The warranty period of Luoying's products is 12 months from the date of delivery, and the "Three Guarantees" service (return, replacement and repair) is implemented.
2. During the use of the products, our factory regularly organizes technical and inspection personnel to visit and consult users for feedback on product quality, use status and improvement opinions, so as to further improve product quality.
3. After sales service personnel rush to the scene within 24-36 hours (48 hours outside the province).
4. For after-sales service, users are required to fill in the quality feedback form after service, and make appraisal opinions, so as to jointly improve the product quality and service quality of Luoying.

Ordering process and instructions

1. Please fax customer purchase list to 021-64207088 e-mail: Luoying @ luoyingsh.com or call 021-622122627.
2. List and price list of products for customers.
3. Specific agreement: delivery date, special requirements and other matters.


Ordering instructions
1. If the customer has special requirements for the product, the following instructions shall be provided in the order contract:
(1) Structural length
(2) Connection form
(3) Nominal diameter, full bore, reduced diameter, pipe size
(4) Medium range and temperature
(5) Our factory can make and design special products according to the special requirements of customers.
2. Our factory can configure and design special products according to the special requirements of customers.
3. If the customer provides the determined product type and model, the customer shall correctly explain the meaning and requirements of the model, and sign the contract under the condition that both parties understand and agree.

Online submission of demand feedback

You can fill in the form below and submit your contact information and product requirements to us. We will contact you as soon as possible. Thank you! In order to get in touch with you in time, please fill in your contact information and requirement information completely.

contact us

  • Customer service hotline: 021-6221-2627
  • Business QQ: 319992131
  • Business fax: 021-6420-7088
  • Email: info@luoyingsh.com
  • Company address: Building 10, north side of Songzheng highway, Shihudang Town, Songjiang District, Shanghai
  • Post code: 201201

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