Instrument Installation Bulk Materials
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Instrument Installation Bulk Materials
The selected compression tube fitting make shall be used throughout the whole installation. The
compression fittings shall have 2 seal rings (twin ferrules).Pressure ratings for compression tubes, tube – and pipe fittings, instrument valves and manifolds shall
comply with the corresponding process requirements.Tubing shall be seamless and shall be in metric sizes.
Compression tube fitting threads: NPT
Standard tubing sizes:Signal air, impulse tubing, instrument air supply to instruments
and hydraulic supply (below 413 barg) = 10 x 1.5 mmSignal air, impulse tubing, instrument air supply to instruments and hydraulic supply (below 520 barg) = 10 x 2.0 mm
Instrument air supply = 25 x 1.5 mm
The Supplier shall use the standard tubing sizes and shall evaluate and advice if other outside
diameters are required for any reason.
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