Mechanical seal piping plan 66A
Description:
Throttle bushing in seal gland restricts seal leakage in event of seal failure. Pressure increase is detected by a pressure transmitter.
Features:
- Normal leakage passes, inner restriction bush to drain.
- Excess leakage is restricted by inner bush from leaving seal gland causing pressure increase, which is sensed by the pressure transmitter.
- Leakage is directed to liquid recovery system or sump.
Uses:
- Intended for use with arrangement 1 seals where it is required to limit leakage in case of seal failure.
Caution:
- Drain connection must be at the bottom position.
API pump seal plan 66A (single seal)
