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Dây Tết Chèn Chì Graphite TEADIT. 2000
Style 2000 packing is manufactured from high purity flexible graphite that is expanded and formed into a braidable yarn and then braided without binders or wire reinforcement. The finished product retains all the inherent benefits of flexible graphite: heat resistance, chemical inertness, low friction, self lubrication, and ready conformability.
The outstanding properties of this style make it a truly multi-service packing capable of a wide variety of uses throughout a plant. This style may be used in valves, pumps, expansion joints, mixers and agitators in the hostile environments of hydrocarbon processing, pulp and paper, power generation, metal-working and other industries where effective sealing is vital
Temperature ºF (ºC): -400 (-240) up to 1202 (650)
Pressure psi (bar):
- Static: 4351 (300)
- Rotating: 435 (30)
- Reciprocating: 1450 (100)
PH: 0 - 14
Shaft Speed f/m (m/s): 3937(20)
Tests realized by Yarmouth Research and Technology Maine – USA
Qualify packing Style 2000IC for fire resistance when applied to valves subjected to direct flame.
API STANDARD 589 – SECOND EDITION
Exposure time to fire - 40 minutes;
Temperature in the valve body up to 679ºC;
Allowable Leakage, pressures of the test and measurements done according to table below.
Packing Style 2000IC has successfully completed the test easily reaching the requirements of this standard.
To qualify packing style 2000IC for fugitive emissions in valves when subjected to thermal and mechanical cycles.
Leak detection method
“EPA method 21”.
ARCO Fugitive Emission Test Specification.
3 thermal cycles at room temperature and at 177ºC;
Leakage measurements are performed before and after each thermal cycle and at each 100 cycles of the shaft;
Test pressure: 645 psig (45 Kgf/cm2);
Test Fluid: Foxboro OVA128 (99% methane);
Maximum allowable leakage: 100 PPMv (if the leak allowed exceeds 100 PPMv, the sobreposta must be adjusted).
Packing 2000IC has successfully completed the test with 5 adjustments during the 3,500 cycles while maintaining leakage under 100 PPMv.
===> Datasheet STYLE 2000