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PTFE bellows price
- Categories:Industry news
- Author:PFA tube lady
- Origin:PFA tube lady
- Time of issue:2019-09-09 10:06
- Views:
PTFE bellows price
- Categories:Industry news
- Author:PFA tube lady
- Origin:PFA tube lady
- Time of issue:2019-09-09 10:06
- Views:
PTFE bellows price
Polytetrafluoroethylene bellows refers to a tubular elastic sensitive element connected by foldable corrugated sheets in the direction of folding and stretching. Bellows are widely used in instruments and meters, and their main purpose is to convert pressure into displacement or force as a measuring element of pressure measuring instruments. The wall of the corrugated tube is thinner, and the sensitivity is high, and the measurement range is from tens of Pa to tens of MPa.
Its open end is fixed, and the sealed end is in a free state, and an auxiliary coil spring or reed is used to increase elasticity. When working, under the action of internal pressure, it stretches along the length of the pipe, causing the movable end to produce a displacement in a certain relationship with the pressure. The movable end drives the pointer to directly indicate the size of the pressure.
Bellows are often combined with displacement sensors to form a pressure sensor that outputs electricity, and is sometimes used as an isolation element. Since the expansion of the bellows requires a large volume change, its response speed is lower than that of the Bourdon tube. The bellows is suitable for measuring low pressure.
PTFE tube, scientific name PTFE tube (F4 tube, PTFE tube for short) is a high-quality plunger extruded tube, using a special processing technology to tightly combine the steel tube and the plastic tube, and can withstand positive pressure 1.6Mpa, negative pressure: 77Kpa; it can be used normally within -60℃～+260℃, with reliable and excellent corrosion resistance. Transporting highly corrosive gases and liquids at high temperatures cannot be replaced by other pipelines.
PTFE pipes include extruded pipes, corrugated pipes, heat shrinkable pipes, plates, rods, films and other products. Different products have different application fields.
Characteristics of PTFE bellows:
1. The operating temperature range is very wide (from -200 degrees to +260 degrees Celsius)
2. Basically have corrosion resistance to all chemical substances except some fluorides and alkaline metal liquids.
3. Excellent mechanical properties including aging resistance, especially for bending and swing applications.
4. Outstanding flame retardancy (in accordance with ASTM-D635 and D470 test procedures, it is designated as a flame retardant material in the air.
5. Excellent insulation characteristics (regardless of its frequency and temperature)
6. Very low water absorption, and has a series of unique properties such as self-lubricity and non-stickiness
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