DN80 Rubber Expansion Joint different size

PTFE Bellows/Expansion Joint

To compensate for length changes in pipelines expansion bends, stuffing box compensators or expansion bellows are used. Bellows have proved particulaly suitable for lined pipe which may be subjected to shock and vibration. They also accomodate axial misalignment. Further advantages include simple space-saving design and speedy installation.

Typical Applications

Chemical Engineering-PTFE is employed in all cases where corrosive substances are used and where conventional materials create sealing problems. Glass apparatus is an example. In this type of equipment, PTFE is used for expansion bellows, which are designed to compensate for mechanical and thermal changes, flexible tubing, seals, glandless valves, turbine stirrers, etc.

PTFE Bellows (Normal type):
l Nominal Diameter (mm/in.): DN 15~DN1600 (NPS1/2~NPS64)
l Fatigue frequency:≥5000 times
l Operating temperature:≤200°C

PTFE Bellows with steel shield: TYPE A
l Nominal Diameter (mm/in.): DN 15~DN1600 (NPS1/2~NPS64)
l Fatigue frequency:≥10000 times
l Operating temperature:≤200°C

PTFE Bellows with stainless steel nets: TYPE B
l Nominal Diameter (mm/in.): DN 15~DN1600 (NPS1/2~NPS64)
l Fatigue frequency:≥10000 times
l Operating temperature:≤200°C

PTFE Bellows for Vacuum resistance (Negative pressure):
l Operation Pressure: -0.1MPa(-1bar)
l Nominal Diameter (mm/in.): DN 15~DN1000 (NPS1/2~NPS39)
l Fatigue frequency:≥10000 times
l Operating temperature:≤200°C

Jiangsu Qianyuan Feida Power Equipment Co., Ltd. (formerly Zhenjiang Feida Expansion Joint Manufacturing Co., Ltd.) is a designated joint enterprise of the former Ministry of Power, Machinery and Chemical Industry. At present, the company covers an area of 60,000 square meters and a building area of 40,000 square Meters, 120 employees, including 20 technical personnel, total assets of more than 25 million yuan. 

The company's main products:

1.Metal, non-metal and air-cooled island expansion joints, etc.
2. Air damper series, smoke duct shut down, adjusting baffle, isolation door, flapper door;

3. Constant force spring support hanger, variable spring support hanger;

4. Auxiliary equipment of power station: steel structure, oiling Device and lubricating oil storage tank, centrifugal oil purification device
Company), electric air heaters, gasifiers, plate heat exchangers and units, fully automatic constant-speed pulverized coal samplers; fast cooling devices for steam turbines, DC bolt electric heaters for steam turbines; multi-stage water seals, steam-water separators, agents APV plate heat exchanger; American Tysil Roots fan, complete set of ash storage equipment, anti-blocking device of raw coal bunker; steam turbine cosmetic plate and coal mill soundproof cover, cooling tower sound insulation screen, dustproof wall

The company is a "star enterprise" in Jiangsu Province, a "high-tech enterprise" in Jiangsu province, a "model enterprise for comprehensive management" in Jiangsu province, the first batch of 100 contract-honoring, trustworthy enterprises in Jiangsu Province, a thousand enterprises with the best economic benefits in Jiangsu, and a comprehensive ministerial Quality management unit, national measurement assurance confirmation unit, Zhenjiang city machinery industry advanced quality enterprise. The enterprise quality management system operates in strict accordance with ISO9001.