STYLE 2235

Description and Application

The new TEADIT packing Style 2235 is made from layers of flexible graphite tape plied into compact strands; each individual filament is reinforced with an Inconel* wire jacket. This yarn is then square braided to form a dense yet malleable packing, which is subsequently treated with lubricating agents to reduce stem friction and a corrosion inhibitor to prevent pitting (* Inconel is a registered trademark of International Co.). Teadit style 2235 is a high-performance valve packing, especially designed for high-pressure, high-temperature steam service. It is self-lubricating, non-hardening, dimensionally stable and easy to install. The Inconel wire mesh covering makes this packing highly resistant to extrusion, the advanced construction assures superior leakage control and highest integrity in steam service.

Typical applications for Style 2235 include control and block valves, as well as other demanding applications in power plants, refineries and similar industries where high pressures and high temperatures are prevailing. It is designed for steam applications, Teadit Style 2235 can also be used with most chemicals and gases.

It is not suitable for highly oxidizing agents at high temperature.

High mechanical and thermal stability; chemically inert within pH range 0 - 14; quick and easy to install; suitable for rotary and rising-stem valves; low friction, special lubricating system; corrosion inhibitor.

Please note: the colour of the actual product might vary from the above image on this data-sheet.

Service Limits

Temperature (ºC)
Minimum -240
Maximum 450
Steam 650
Pressure (bar)
Static 450
pH
Minimum 0
Maximum 14

International Approvals for Style 2235

Tests were conducted by Yarmouth Research and Technology Maine – USA

Fire Test

Objective

Qualify packing Style 2235 for fire resistance when used in valves subjected to direct flame.

Test Procedure

API STANDARD 589 – SECOND EDITION

Conclusion

Packing 2235 has successfully passed this test exceeding the requirements of the standard.

ParametersLeaks(ml/min)
MeasuredAllowable
During the 2 minutes pretest hydrostatic 0.0 0
During firing and cooling 0.1 60
During the low pressure test after firing 1.6 3
After the closing and opening operation 13.2 60

Fugitive Emissions Test

Objective

Qualify packing style 2235 for fugitive emissions in valves when subjected to thermal and mechanical cycles. Leak detection method "EPA method 21".

Test Parameters

5000 mechanical cycles, with a maximum of 3 adjustments. 10 thermal cycles at room temperature and up to 260°C. Leak measurements performed before and after each thermal cycle and every 100 cycles of the stem. Test pressure: 600 psi (42 kgf / cm2).

Conclusion

Packing 2235 has successfully passed the test with one single adjustment during the 5,000 cycles while maintaining maximum leakage under 500 PPMv, as the graph on the right shows.

Gráfico e Certificados 2235

 

 

 

TEADIT® Deutschland GmbH

Schanzenstraße 35, 51063 Köln, Germany

Phone: +49 (0)221/922 342-0

Fax: +49 (0)221/922 342-22

TEADIT® International Produktions GmbH

Rosenheimer Str. 10, A-6330 Kufstein Austria

Phone: +43-5372-64020-0

Fax: +43-5372-64020-20

 

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