Double Ferrule Instrumentation Fitting
Product Description
A double ferrule compression fitting is the most common instrumentation style fitting. They are regularly used in process measurement and control systems in aerospace, defense, chemical processing plants, medical equipment and oil & gas industries. Compression fittings are made up of three components: nut, body and ferrule (either single or double). This design creates a sequential grip on the tube. Instrumentation fittings have U.N.E.F. or (United National Extra Fine) threads and sizing is determined by the outside diameter of the tubing being used. The ferrule coins and compresses into the tube to provide a tight grip on the tube surface.
Typical Applications
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food and food processing industries.
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sewage and water treatment plants.
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risers for oil platforms and pipelines.
-
ships and marine equipment.
-
pharmaceutical industry.
Weldability
Good
Availability
Key features
-
Nice corrosion resistance
-
Good abrasion resistance
-
Low magnetism
-
Long working life
Corrosion Resistance
Very Good
Machinability
Good / fair.
Double Ferrule Instrumentation Fitting specifications
Minimum Order Quantity |
10 Piece |
Thread Size |
1/4 |
Product Type |
ferrule type |
Surface Finishing |
steel |
Grade |
SS 304 , SS316 |
Color |
STEEL |
Material |
SS 304 , SS 316 Duplex |
Application |
Pneumatic Connections |
Size |
3/4 inch |
Brand |
KE |
DIN |
2353 |
Chemical Composition (weight %)
| C | Si | Mn | P | S | Tensile strength kg/mm² |
Yield point kg/mm² |
Elongation% |
| 0.25 or less |
0.35 or less |
0.30 0.90 |
0.040 or less |
0.040 or less |
52 up | 39 up | 15 up |
| 38 up | 22 up | 30 up |
Mechanical Properties
| Grades | Delivery Conditions | Tensile Strength Rm (Mpa) | Elongation in the longitudinal direction Al (%) |
| St 45 | +A (GBK) | 390 min | 21 min |
| St 52 | +A (GBK) | 490 min | 22 min |
| E355 | +A (GBK) | 450 min | 22 min |
| 1020 | +A (GBK) | 390 min | 21 min |