SKY 603-0404 Sight Glass Male Flare x Female Flare 1/4"
The SKY 603-0404 is a 1/4" male flare x female flare sight glass for refrigeration and HVAC-R liquid line service applications. Listed in the SKY Refrigeration Catalogue under Liquid Controls, this sight glass provides a compact inspection point for technicians checking refrigerant flow and moisture indication in compatible systems.
With its flare connection format and 62mm lay-in length, the 603-0404 is suited to service and installation work where a 1/4" flare sight glass is required.
Key Features
1/4" male flare x female flare sight glass
Liquid and moisture indicating sight glass design
Fast and accurate tri-range moisture indicator
Wide viewing angle
Hermetically sealed construction
R-410A compatible
48bar safe working pressure
Suitable for HVAC-R and refrigeration service applications
Compact 62mm lay-in length
Manufactured in accordance with ISO/AS 5149.2, as listed by SKY
Specifications
| Specification | Details |
|---|
| Product Code | 603-0404 |
| Brand | SKY Refrigeration |
| Product Type | Sight Glass |
| Catalogue Section | Liquid Controls |
| Connection Type | Male Flare x Female Flare |
| Size | 1/4" |
| Lay-In Length | 62mm |
| Moisture Indicator | Tri-range moisture indicator |
| Refrigerant Compatibility Note | R-410A compatible, as listed by SKY |
| Safe Working Pressure | 48bar SWP |
| Construction | Hermetically sealed |
| Source Note | Listed in SKY Refrigeration Catalogue 2025, Liquid Controls section |
Applications
Refrigeration liquid line monitoring
HVAC-R service and maintenance
Moisture indication in compatible systems
Refrigerant flow inspection
Cool room and freezer room refrigeration
Service replacement where a 1/4" flare sight glass is required
Safety & Documentation
Install only by licensed refrigeration technicians. Confirm refrigerant compatibility, system pressure, flare connection size, flow direction, installation position and service requirements against system and manufacturer documentation before installation.
The SKY 603-0404 is a compact 1/4" flare sight glass for technicians needing a reliable visual inspection and moisture indication point in compatible refrigeration and HVAC-R systems.
