Materials
UNILOK fittings are available in various kinds of materials as below. Straight fittings are machined from cold finished bar stock and shaped fittings from forgings. For more details or special application, contact your local distributors.
| Materials | Bar Stock | Forgings |
|---|---|---|
| 316 SS or 316L SS | ASTM A479 ASME SA479 |
ASTM A182 ASME SA182 |
| Brass® | ASTM B16 ASTM B453 |
ASTM B283 |
| Alloy 400 (Monel®) | ASTM B164 | ASTM B564 ASME SB564 |
| Alloy 600 (Inconel®) | ASTM B166 | |
| Alloy 625 (Inconel®) | ASTM B446 | |
| Alloy 825 (Inconel®) | ASTM B425 | |
| Alloy C-276 (Hastelloy®) | ASTM B574 | ASTM B564 |
| PTFE | ASTM D1710 | ASTM D3294 |
| Duplex (SAF 2205®) UNS S31803 / S32205 |
ASTM A479 | ASTM A182 |
| Super Duplex (SAF 2507®) UNS S32750 |
ASTM A479 | |
| UNS 31254 (Incoloy 25-6MO®) |
ASTM B649 | – |
Sour Environment Services
UNILOK tube fittings are comply with NACE MR-0175/ISO 15156 for sour oilfield application or NACE MR-0103 for petroleum refining operations.
To order, add – N to the end of part number.
To order, add – N to the end of part number.
Identification of Metric UNILOK Tube Fittings
Every UNILOK tube fittings with metric tube end have a stepped shoulder to distinguish the fittings with fractional tube end.
Cleaning
UNILOK tube fittings are free from machine oils, loose particles and grease throughout the close cleaning process.
UNILOK tube fittings for oxygen enriched systems are available by the special cleaning procedure. To order, add OX to the part number.
UNILOK tube fittings for oxygen enriched systems are available by the special cleaning procedure. To order, add OX to the part number.
Connects Fractional Tube to Pipe Butt Welded System
Connects Metric Tube to Pipe Butt Welded System
Dimensions are for reference only and are subject to change without prior notice. E is minimum opening. F and L are typical finger tight.