Espey WD200/500

Advantages

• - Easy installation by split housing design (shaft removal not required)
• - Long-term operation time
• - Maintainability
• - Segmented seal rings for easy replacement

Features

• Multi-part seal rings, radially cut on process side, overlapped mortised with gas tight joints on atmosphere side (adjusting); Split housing design; Lowest possible operation gap - lowest leakage; Dry running; Self-adjusting seal ring; Seal rings bear radial shaft movements; Compensates axial shaft movements; Short axial installation length; No sealing components mounted on the shaft and hence no additional shaft vibrations

Technical informations

Shaft diameter: d = 45 ... 340 mm (1.77" … 13.89")
Operating pressure: p = vacuum ... 3 bar (44 PSI) abs. (depends on peripheral velocity)
Operating temperature: t = -120 °C ... +500 °C (-184 °F … +932 °F) for carbon, -120 °C ... +150 °C (-184 °F … +302 °F) for PTFE compound
Sliding velocity: vg = max. 40 m/s (131 ft/s)
Radial play: ±2.5 … 5.0 mm (±0.1" … 0.2")
Axial movement: theoretically unlimited
Recommended wear guard: >58 HRC

Product variants:

Espey WD200/500-WD1S1 - with barrier gas port. The arrangement guarantees a focused barrier gas flow to the process side and keeps gases, solids and mists off the sealing area. In addition the leakage to the outside is reduced.

Espey WD200/500-WD1S2 - with barrier gas port. The arrangement guarantees a focused barrier gas flow to the process side and keeps gases, solids and mists off the sealing area. In addition the leakage to the outside is reduced.

Espey WD200/500-WD1S3 - with barrier gas port. The arrangement guarantees a focused barrier gas flow to the process side and keeps gases, solids and mists off the sealing area. In addition the leakage to the outside is reduced.

Espey WD 200/500-WD1S2A1 - with barrier gas port and recirculation. The arrangement guarantees a focused barrier gas flow to the process side and keeps gases, solids and mists off the sealing area. In addition the leakage to the outside is reduced and residual gases and condensates will be purged.