A PTFE / FEP / PFA Lined 90 Degree Elbow (also known as a PTFE liner or FEP liner) is a type of elbow joint designed to be a hybrid between a PTFE liner and an FEP liner. The main difference between a PTFE liner and an FEP liner is that the PTFE liner is designed to be more flexible than an FEP liner, while the FEP liner is designed to be more rigid than a PTFE liner.
A PTFE liner is usually used in applications where high flexibility is needed, such as in medical devices. A PTFE / FEP / PFA Lined 90 Degree Elbow can be used in the same applications as a PTFE / FEP / PFA Liner but with the added benefit of being more flexible than an FEP liner.
PTFE Lined 90 Degree Elbow Specifications
| Size | : | 25 NB to 300 NB |
| Hydro Test | : | at 29.8 Kg/cm2 |
| Flanges Used | : | ASTM A 105/IS 2062/SS 304/SS 316 |
| Spark Test | : | 15 KVA |
| Outer Body | : | ASTM A 234 Gr WPB SCH-40/SS 304/SS 316 |
| Lining | : | PFA |
Standards of Fluorinated Ethylene Propylene
- All dimensions are in mm otherwise specified
- Pipes confirms to ANSI B-36.10
- Elbows confirms to ANSI B-16.9
- Flange dimensions are as per ANSI B-16.5 # 150
- Liner thickness on raised face will be 20% lower than specified above
Material of Construction
- Pipes & Elbows liner up to 150 NB is from PTFE White liner confirms to standard resin Specification ASTM D-1457, ASTM D-4994 & 95 Type II
- Pipes & Elbows of size 200 & above will be supplied either in FEP or PFA or PTFE depending on process liquid handled & as per standard resin specification
- ASTM D-2116 & D-3307 Type III & Type II & ASTM D-1457, ASTM D-4994 & 95 respectively
- Pipes : Seamless Carbon Steel Pipe as per ASTM-A-106 Gr, B Sch 40
- Elbows : Ductile Cast Iron confirms to ASTM A-395 or S.G.Iron confirms to ASTM A-536 (60-40-18)
- Flanges confirms to ASTM A 105 Gr. B or IS 2062
- MS PTFE Lined Pipes are being supplied with one loose & other fixed flange & Elbow with fixed flanges
- A Pair of vent holes are provided in each pipe & Elbow
- Pipes & Elbow can be supplied in SS as per individual customer's requirement
Application
- SS 304 PTFE Lined 90° Elbows uses in Chemical Industry
- PTFE Lined 90° Elbow uses in Power Generation Plants
- PFA Lined Elbow uses in Oil & Gas Industry
- MS PTFE Lined 90° Elbow uses in Petrochemical Refining Industry
- MS FEP Lined 90° Elbow uses in Paper & Pulp Industry
- MS PFA Lined 90° Elbow uses in Pharma Industry
