SPX TG H15-50, Instruction Manual, Page: 46 / 110

46
Bc
Bd
Bc
Bd
PQ GS
T
Bc
Bd
Bj
2xBi
Bc Bd
Bj
2xBi
2xBi (TG H2-32/3-32) 2xBi (TG H2-32/3-32)
(TG H2-32/3-32)
(TG H2-32/3-32)
A.0500.351 – IM-TGH/07.02 EN (10/2015)
API plans 12, 22, 31, 32, 41/ ISO codes 04, 05, 08, 09 – Clean flush
A flow of clean fluid to the seal chamber. The fluid can be either pumped fluid recirculating through a
strainer or cyclone separator and orifice, or a clean compatible fluid injected from an external source.
This media comes into contact with the pumped liquid, so it must be compatible with it.
Pressurised barrier (double seal)
A pressurised barrier fluid from an external reservoir or circuit is connected to the shaft seal
chamber. The barrier fluid must be clean and compatible with the fluid being pumped.
API plans 53, 54/ ISO codes 09, 11, 12 API plans 51, 62/ ISO codes 08, 13
Circulating quench Non-circulating quench
API plan 61/ ISO code 03 – Leakage check and containment
(Single cartridge mechanical seal Cartex TN3 GCT)
In case the seal chamber is not connected, it serves as a seal leakage control (leakage through the
first shaft seal). The seal chamber can be connected to a pipe which drains the leakage. Because
risks of dry running the arrangement is only advised for single mechanical cartridge seal.
API plans 51, 62/ ISO codes 08, 09, 13, 03 – Static quench
(Double mechanical seal tandem GG, Single cartridge mechanical seal Cartex TN3 GCT, Single
Cartridge mechanical seal Cartex QN3 GCQ, Double cartridge mechanical seal Cartex DN3 GCD).
A clean, non-pressurised quench medium (liquid or steam) flowing from an external source can be
connected.