Concentric Reducer Duct Expansion Bellows Compatible with Various Media

• Customization: Available
• Warranty: 18 Months
• Type: Concentric
• Model NO.: duct expansion bellows
• Technics: Vulcanization
• Customized: Customized
• Technical: Vulcanized,Casting
• Pressure Rating: 150 Psi
• Working Temperature: -20 ~ +115ºC
• Flange Standard: En,DIN,ANSI,JIS,GOST
• Transport Package: Wooden Crate
• Specification: DN80*40-DN300*250
• Trademark: CHNFLEX
• Origin: China
• HS Code: 40094200
• Production Capacity: 30000PCS/Year

Product Description

Concentric reducer duct expansion bellows is a type of pipeline connection component, mainly used to solve the problem of different diameters when connecting metal pipelines. The ordinary type is used to transport air, compressed air, water, seawater, oil, acid, alkali, etc. at -10 ºC~115 ºC, while the special type is used to transport the above-mentioned media or oil, concentrated acid, etc. above -30 ºC~250 ºC.

NO	Name	Material
1	Inner/outer rubber	NR,NBR,EPDM,FKM,PTEF,IIR,CR
2	Strengthen ring	Nylon with rubber
3	Fabric	Nylon
4	Union	Stainless steel,Malleable Iron

Concentric reducer duct expansion bellows has the following significant characteristics:
1. High pressure resistance ensures the safe operation of pipeline systems
2. Good elasticity, able to adapt to the displacement and deformation of pipelines
3. Large displacement and balanced pipeline deviation
4. Absorb vibration, reduce noise, and improve the comfort of pipeline systems
5. Good noise reduction effect ensures the operational quality of the pipeline system

Product Specification

Size	Length	Allowable Movements in Operation
mm	mm	Ext	Comp	Horizontal	Angular
80*40	180	15	20	13	15°
80*50	180	15	20	13	15°
80*65	180	15	20	12	15°
100*50	180	15	20	22	15°
100*65	180	15	20	22	15°
100*80	180	15	20	14	15°
125*65	200	18	22	22	15°
125*80	200	18	22	22	15°
125*100	200	18	22	22	15°
150*80	200	18	22	22	15°
150*100	200	18	22	22	15°
150*125	200	18	22	22	15°
200*100	200	18	22	22	15°
200*125	200	18	22	22	15°
200*150	200	18	22	22	15°
250*100	220	20	25	24	15°
250*125	220	20	25	24	15°
250*150	220	20	25	24	15°
250*200	220	20	25	24	15°
300*150	220	20	25	24	15°
300*200	220	20	25	24	15°
300*250	220	20	25	24	15°

Note: If the medium is oil, acidic or alkaline substances, and there are special requirements for the working temperature, you can customize it by sending a letter or drawing. Please specify when ordering.
 

Product Details

Production Flow

1.Raw material Top level CR/EPDM/NBR rubber raw materials,No recycled rubber

2.Plasticating and mixing Special Formulation for better Bending with Nylon,For Better Strength,Sealing

3.Workblanks wraping Cooper plated steel wire reinforcement   prevent pull off

4.Vulcanizing Automatic vulcanization machine ensure vulcanization time and pressure

5.Inspecting 100% strict inspection is to be responsible for consumers

6.Packaging Protective Packaging for No Rust and Breakage

Application

Concentric reducer duct expansion bellows are widely used in pipeline systems such as water supply and drainage, circulating water, HVAC, fire protection, paper making, pharmaceuticals, petrochemicals, ships, water pumps, compressors, fans, etc.

Our Services

1.24-hour online
2.Free samples provided
3.Support customization
4.Provide drawings
5.Multiple payment styles to choose from
6.Factory inspection (material, specifications, quantity, pressure, packaging)
7.Long warranty period
8.Suitable packaging for transportation
 

Our Customer

Certifications

FAQ

Q1:What's the package?
A2:The package is carton box and strong plywood case.

Q2:What's the working pressure?
A2:The working pressure can be 1.0Mpa, 1.6Mpa, 2.5Mpa.

Q3:What certificates can you provide?
A3:We could provide CE,ISO certificate. 

Q4:Can we get a sample?
A4:Yes,we could provide samples for you to test the quality.