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| Item | Description |
|---|---|
| 1 | Flat seal |
| 2 | Housing, 2-piece |
| 3 | Seal ring |
| 4 | Tension spring |
| 5 | Detent |
Espey WD200
Features
- Split housing design
- Multi-part seal rings, radially cut
- Very small operation gap - low leakage
- Dry running
- Self-adjusting seal rings
- Seal rings bear radial shaft movements
- Compensates axial shaft movements
- No sealing components mounted on the shaft and hence no additional shaft vibrations
- Seal rings running contact-free - sliding faces and machine consume no additional power
Advantages
- Easy installation by split housing design
(shaft removal not required) - Long-term operation time
- Maintainability
- Segmented seal rings for easy replacement
Operating range
Shaft diameter:
d = 40 ... 340 mm (1.57" … 13.39")
Operating pressure:
p = vacuum ... 20 bar (290 PSI) abs.
Operating temperature: t = -120 °C ... +800 °C (-184 °F … +1,472 °F) for carbon,
max. 225 °C (437 °F) for PTFE compound
Sliding velocity:
vg = max. 150 m/s (492 ft/s) for carbon,
max. 40 m/s (131 ft/s) for PTFE compound
Radial play: ±1.0 … 5.0 mm (±0.04" … 0.2")
Axial movement: theoretically unlimited
Recommended wear guard: >300 HB (low pressure), >58 HRC (high pressure)
Materials
Seal ring: Carbon, PTFE compound
Housing: 1.4021, 1.4571, Hastelloy®, Titanium, Inconel®, others
Tension spring / detent: 1.4571, Hastelloy®, Titanium, Inconel®
Standards and approvals
- FDA
- Compliant to TA Luft (German Clean Air Act)*
"(*) Kohleschwimmringdichtungen werden in der TA Luft nicht explizit genannt, können aber in bestimmten Anwendungen eine Lösung sein. Der Einsatz ist mit der Genehmigungsbehörde zu klären."
Recommended applications
- Gases
- Fumes and exhaust,solids containing, flammable (Atex), acid containing and toxic gases
- (Solids containing) steams / liquid mist
- Oil mist / penetrating oil
- Water
- Chemical industry
- Waste incineration and removal industry
- Power plant technology
- Petrochemical industry
- Food processing industry
- Metal production and processing
- CO2 transportation and storage
- Medium-sized and large fans / blowers
- Bearing seals (gear box, motors)
- Steam turbines
- Mixers, agitators, mills, dryer
Product variants
Espey WD200-WDS
with barrier gas and grease barrier port (for e.g. toxic and solids containing gases as well as Atex applications, on special request).
Espey WD200-WDK
in kurzer Bauform mit Fettsperre - Typ WDKF zusätzlich mit verkleinertem Gehäuseaußendurchmesser (anwendbar bei reinen Medien, nicht für feststoffbeladene Gase).
Espey WD200-WDSA
with barrier gas, suction and grease barrier port (for e.g. toxic and solids containing gases with condensate formation as well as Atex applications).
For toxic and solids containing gases as well as Atex applications type shaft seal
Espey WD200-WDKS with short design, reduced housing outside diameter and barrier gas port (for e.g. toxic and solids containing gases as well as Atex applications, on special request).
Espey WD200-WDA
for applications involving condensate formation to enable directed throwing off to the outside of the housing.
EspeyWD200-WD \n In short design with 1 to 4 rings for simple low-pressure applications up to 2 bar a atm. Available from a width of 25 mm. This variant is not suitable for toxic, solid gases and flue gases.
