Chesterton 4400 Dual Concentric Gas Seal

Accommodates Loss of Barrier Gas for Greater Sealing Reliability

Chesterton has developed technology that makes the use of a gas seal easy and intuitive. The 4400 delivers higher reliability with lower gas consumption than conventional gas-lubricated seals.

Transitions to a traditional liquid seal in the event of the loss of barrier gas and recovers to a gas seal upon restoring the barrier gas

Compact flush mount design that does not require modification of the stuffing box; fits more equipment types than conventional gas seals

Innovative in-Gland Control System (IGCS) dynamically controls gas pressure to process pressure

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Categories: Gas Seals, Mechanical Seals

Description

Description

Zero fugitive emission, monitoring exempt, dual gas seal design

Full sealing recovering following loss of barrier gas

Unique design minimizes profiled gas face wear due to loss of barrier fluid

Seal transitions to a contacting wet mode during gas disruptions for greater sealing reliability

In-Gland Control System (IGCS) dynamically tracks process pressure to minimize gas consumption

No heat generation

Designed for ANSI/API pumps, compressors, and blowers

Operating Conditions		Materials
Sizes	25 mm to 90 mm (1.00″ to 3.625″)	Faces	CB, SSC
Pressure	711 mm (28″) Hg Vacuum to 20 bar g (300 psig)	Elastomers	FKM, EPDM, FEPM, ChemLast™
Temperature	55° C to 300° C (-67˚ F to 570˚ F)	Metals	1.4401 (316SS)
Speed	25 m/s (5000 fpm)	Springs	2.4819 (Alloy C-276)
Fits ISO-3069-C