PD 75 Pump Seal Support Systems | John Crane

PD 75

Leakage Detection

Used to detect and monitor leakage of the inboard seal, these seal support systems can detect liquid leakage (API Plans 65 and 75) or gas leakage (API Plan 76), or a mixture of gas and liquid leakage (API Plan 75). A PD 75 (API Plan 75) collection system is used to monitor inner seal performance (level and pressure), where a dry-running secondary containment seal is applied to a process fluid that will condense at lower temperature or is always in a liquid state.



  • California Residents: PROPOSITION 65 WARNING
  • Designed in accordance with API 682 4th Edition
  • Can be used to test the inner seal.
  • A PG 72 (API Plan 72) system can be used in conjunction with PD 75 to ensure fugitive emissions are not released to the environment.
  • Customized designs available to meet specific project requirements.
  • Includes a pressure transmitter to indicate a build-up in pressure from excessive inner seal leakage or failure.

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