DF-PDGS6 DiamondFace Burmann mechanical seals

DF-PDGS6 DiamondFace

Features

  • DiamondFace bonded primary seal faces
  • Safe cupped retainer for rotating ring
  • Also Bi-directional
  • Ready-to-fit cartridge unit
  • Single, double, tandem and also tandem seal with intermediate labyrinth arrangement available
  • An ideal solution for Ethane, CO2 and also many other low vapor margin applications
  • This type of seals can handle both liquid and also gaseous phases during the operation of the pump

DF-PDGS6 Advantages

  • Significantly lower leakage rate compared to competition
  • Also Longer life span
  • Wear and also contact free operation
  • Self-cleaning 3-D gas grooves
  • High gas film stiffness
  • Proven, reliable and also economical solution
  • Also,Can be adjusted even to extreme narrow installation space – retrofits are easy to implement

Operating range

Shaft diameter:
D = 32 … 154 mm (1.26″ … 6.06″)
Pressure (static and also dynamic): p = 0 … 120 bar (1,450 PSI)
with PTFE option: 0 … 250 bar (3,625 PSI)
Temperature:
t = -20 °C … +150 °C (-4 °F … +302 °F)
with PTFE option: -100 °C … +200 °C (-148 °F … +392 °F)
Sliding velocity:
vg = 0.6 … 140 m/s (2 … 459 ft/s)For applications outside the operating range mentioned, please inquire.

DF-PDGS6 DiamondFace Materials

Primary seat and seal face: Silicon carbide with DiamondFace bonding
Secondary seat and seal face: Silicon carbide with DLC coating. Optional also with DF-coating
Secondary seals: FKM, PTFE (DF-PDGS6) or other elastomers, Also depending on product gas composition
Metal parts: 1.4006 (410) and also other stainless steels

Standards and approvals

  • NACE

 

Download catalog for more information:DF-PDGS6 DiamondFace