PFA equal diameter flared elbow is a pipe connection component made of soluble polytetrafluoroethylene (PFA) material. It has a straight-through and flared design and is widely used in applications requiring corrosion resistance, high temperature resistance and high purity fluid transmission.
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| PartNo. | Tube O.D. | Orifice (mm) | A (mm) | B (mm) | |||||
|---|---|---|---|---|---|---|---|---|---|
| D-G1-UE6M-6M-FA | 6 | 4 | 42 | 37.3 | |||||
| D-G1-UE4-4-FA | 1/4″ | 3.8 | 42 | 37.3 | |||||
| D-G1-UE6-6-FA | 3/8″ | 6.3 | 44.5 | 39.7 | |||||
| D-G1-UE8-8-FA | 1/2″ | 9.6 | 45.5 | 41.4 | |||||
| D-G1-UE12-12-FA | 3/4″ | 16 | 56 | 50.5 | |||||
| D-G1-UE16-16-FA | 1″ | 22.1 | 69 | 60.7 | |||||
| D-G1-UE20T-20T-FA | 1-1/4″ | 27.9 | 88.5 | 78.4 | |||||
| D-G1-UE24T-24T-FA | 1-1/2″ | 33.7 | 109 | 94.2 | |||||
● Wetted parts: Ultrapure PFA. ● Nut: Ultrapure PFA. ● Maximum working pressure: 125 PSIG (8.6 bar), see pressure/temperature table. ● Operating temperature range: -18℃~200℃, 1½ and above specifications are recommended to be used at a temperature below 150°C. | |||||||||
PFA (Polyfluoroalkoxy) is a perfluoroalkoxy resin with the following properties:
● Chemical Resistance: Resistant to nearly all chemicals (including strong acids, strong bases, and organic solvents), it is suitable for transporting a variety of corrosive media.
● High-Temperature Resistance: With a long-term operating temperature range of -80°C to 260°C, it can withstand extreme temperature environments.
● Electrical Insulation: Stable dielectric properties are unaffected by temperature and frequency, making it suitable for electrical insulation applications.
● High Purity: Extremely low metal element dissolution meets the ultra-clean environment requirements of the semiconductor and photovoltaic industries.
● Low Friction: The smooth surface reduces fluid resistance and reduces energy loss.
● Equal Diameter Flared Elbow: Connects two pipes of the same diameter, maintaining a straight flow path and reducing turbulence and pressure drop.
● Flared Design: The flaring process increases the connection area, enhancing sealing and mechanical strength, and reducing the risk of leaks.
● Translucent appearance: Allows easy observation of the fluid status within the pipeline, suitable for applications requiring visual monitoring.
● Semiconductor Manufacturing
Used for connecting pipelines for transporting high-purity chemical reagents (such as hydrofluoric acid and hydrochloric acid), ensuring contamination and leak-free operation.
Typical Applications: Wafer cleaning, etching, and chemical vapor deposition (CVD) processes.
● Photovoltaic Industry
Connects pipelines for corrosive gases or liquids, such as silane and ammonia, used in photovoltaic cell production.
Advantages: Resists high temperatures and chemical corrosion in photovoltaic processes, extending equipment life.
● Chemical and Pharmaceutical Industry
Suitable for pipelines transporting strong acids, strong bases, and organic solvents, such as reactors, distillation towers, and storage tanks.
Pharmaceutical Industry: Used for transporting high-purity fluids such as purified water and injectables, complying with GMP standards.
● Oil and Gas
Connects pipelines for corrosive media, such as oil and gas mixtures containing hydrogen sulfide, to downhole tools or surface equipment.
Advantages: High-pressure and corrosion resistance, reducing maintenance costs.
● Power Industry
Used in cooling water or chemical treatment systems in nuclear and thermal power plants, ensuring long-term stable operation.
● Pipe Cleaning: Thoroughly clean the inner wall of the pipe before installation to prevent impurities from scratching the joint surface.
● Alignment: Ensure the pipe and joint axes are aligned to avoid eccentricity and stress concentration.
● Fixing Method: Welding, adhesives, or mechanical clamps can be used for fixing, depending on the specific application.
● Leakage Test: Perform a pressure test after installation to confirm no leaks before commissioning.
● Regular Inspection: Inspect the joint seal and connection status every six months, paying particular attention to the flared area for looseness.
● Cleaning and Maintenance: Wipe the joint surface with a soft cloth, avoiding scratches caused by hard objects.
● Replacement Standard: Immediately replace the joint if cracks, deformation, or leakage are detected.
| Surface roughness specification | ||
|---|---|---|
| Component Description | SEMI F57 0622 Recommended value Ra (µm) | Typical test results Ra (µm) |
| Injection molded valve body | ≤0.35 | ≤0.30 |
| Machine-machined PTFE diaphragm | ≤0.35 | ≤0.20 |
| Injection molded fitting flow path | ≤0.35 | ≤0.25 |
| Machine-machined PFA valve body | ≤0.60 | ≤0.30 |
| Machine-machined PTFE valve body | ≤0.60 | ≤0.40 |
The test liquid used was ultrapure water and the test was carried out at 85°C. The parts were leached after the prescribed rinsing pretreatment. The immersion time was 7 days.
| Ion types | SEMI F57 0622 Recommended value (µg/m³) | Typical product measurement values (ultrapure water 85°C+5°C, 7-day leaching value) (µg/m³) |
|---|---|---|
| Ammonium ions NH4+ | ≤100 | <0.1 |
| Bromide ions Br− | ≤100 | <0.1 |
| Chloride ions Cl− | ≤100 | <3 |
| Fluoride ions F− | ≤20000 | <133 |
| Nitrate ions NO3 | ≤100 | <0.1 |
| Nitrite ions NO2 | ≤100 | <0.1 |
| Phosphate ions PO42− | ≤100 | <0.1 |
| Sulfate ions SO42− | ≤100 | <0.1 |
| Surface extractable metal contaminants | ||
|---|---|---|
| Test items (tcp-ms) | SEMI F57 0622 Recommended value (μg/m²) | Typical product measurement values (ultrapure water 85°C + 5°C, 7-day leaching value) (μg/m²) |
| Aluminum AI | ≤5 | <0.2 |
| Arsenic AS | ≤2 | <0.1 |
| Antimony Sb | ≤2 | <0.1 |
| Barium Ba | ≤15 | <0.2 |
| Boron B3 | ≤30 | <0.5 |
| Cadmium Cd | ≤2 | <0.01 |
| Calcium Ca | ≤10 | <0.21 |
| Chromium Cr | ≤1 | <0.2 |
| Copper Cu | ≤10 | <0.2 |
| Iron Fe | ≤5 | <0.2 |
| Lead Pb | ≤1 | <0.05 |
| Lithium Li | ≤2 | <0.2 |
| Magnesium Mg | ≤2 | <0.2 |
| Manganese Mn | ≤5 | <0.2 |
| Nickel Ni | ≤1 | <0.2 |
| Potassium K | ≤10 | <0.5 |
| Sodium Na | ≤10 | <0.5 |
| Strontium Sr | ≤0.5 | <0.05 |
| Titanium Ti | ≤2 | <0.1 |
| Tin Sn | ≤2 | <0.1 |
| Vanadium V | ≤2 | <0.01 |
| Zinc Zn | ≤5 | <0.2 |
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