Industrial sourcing guide
Instrumentation Fittings and Tube Fittings Selection Guide
Instrumentation fittings must match the actual tubing and thread standards used at site. This guide helps buyers structure RFQs for connectors, elbows, tees, unions and adapters.
Fitting types in a typical RFQ
Common tube fitting enquiries include male connectors, female connectors, elbows, tees, unions, reducers, caps, bulkhead fittings and flange connectors. A mixed list should be sent with quantity by size and fitting type.
- Straight connectors and adapters
- Male and female elbows
- Branch tees, run tees and union tees
- Reducer unions, caps and bulkhead fittings
Dimensions and thread details
Tube OD, wall thickness, thread form, pressure rating and material grade are critical. A small mismatch between metric, imperial, NPT, BSPT or BSPP standards can create installation failures.
Material selection
SS316 is common for industrial instrumentation, but the final material should reflect corrosion, pressure, temperature and compatibility requirements.
Frequently asked questions
What is the most important detail for tube fittings?
Tube outside diameter and wall thickness are essential because compression fittings must match the actual tube.
Can one RFQ include many fitting types?
Yes. Send a table with item name, tube OD, thread type, material and quantity for each fitting.