GUARDIAN® 306 EZ-FLO®
FEP Lined Spool-Type Expansion Joint
Garlock® GUARDIAN® 306 EZ-FLO® spool-type expansion joints feature a self-flushing arch with an FEP lining fused to the body. The GUARDIAN® 306 EZ-FLO® is designed for the chemical processing and pulp and paper industries, where its ability to resist corrosive attack at normal or elevated temperatures and pressures is unequaled.
Regional Availability Restrictions:
Not available in Europe
- FEP liner is non-contaminating and suits a wide range of applications
- Flowing arch design prevents media buildup and reduces turbulence and vibration
- 250 psig / 17 bar pressure rating ensures longer service life and consolidates inventory
- Liner extends to outer diameter of flange to prevent chemical attack on expansion joint flanges
- Mechanically bonded liner resists delamination
- Available with GYLON® 3545 gasket face for raised face flange connections. A gasket is not required on full face flange. FEP is compressible to achieve seal.
- Size:
- Min. Inner Diameter: 3 in / 75 mm
- Max. Inner Diameter: 20 in / 500 mm
- Temperature:
- Max temperature rating +300ºF, based on body and cover materials.
To determine, find the minimum temperature based on materials selected.
Body Material | Max. Temp.
• Nylon Tire Cord (Standard): +250°F (+120°C)
• Kevlar Tire Cord: +300°F (+120°C)
Liner and/or Cover Material | Max. Temp.
• Natural Rubber: +180°F (+80°C)
• CSM: +250°F (+120°C)
• Neoprene/FDA Neoprene: +250°F (+120°C)
• Nitrile/FDA Nitrile: +250°F (+120°C)
• EPDM/FDA EPDM: +300°F (+150°C)
• Chlorobutyl (Standard): +300°F (+150°C)
• HNBR (Hydrogenated Nitrile): +300°F (+150°C)
• FKM (Fluoroelastomer): +400°F (+205°C)Note: Not all materials are available in all configurations. Contact Garlock to inquire.
- Max temperature rating +300ºF, based on body and cover materials.
- Pressure and Vacuum Rating:
Note: Pressure and vacuum ratings at neutral FF dimension. Extended face to face dimensions result in reduced pressure and vacuum ratings for GUARDIAN® Style 306 EZ-FLO® expansion joints.
Standard Design
- Tube – Seamless FEP lining extends to the outer edge of the flange; completely fused to the expansion joint body- Incorporates a flowing arch design to resist product build-up. A gasket is not required on full face flange. FEP is compressible to achieve seal.
- Body – Impregnated nylon tire cord fabric cross-wrapped in bias-ply construction
- Cover – Homogeneous layer of chlorobutyl elastomer extends to the outside edge of the flange- Coated with a weather-resistant protectant
Optional Configurations
- Non-standard face-to-face dimensions (pressure / vacuum ratings may be affected)
- Non-standard drill patterns- Blind flanges (no drilling)
- Lightweight designs available for low pressure and non-metallic pipe applications
- Available with GYLON® 3545 gasket face for raised face flange connections
Application Data Sheets
Garlock Rubber Expansion Joint Application Data Sheet
Technical Data
Expansion Joints Catalog – Technical Manual
Expansion Joints Catalog – Technical Manual (NA)
Garlock Rubber Expansion Joint Application Data Sheet
Technical Data
Expansion Joints Catalog – Technical Manual
Expansion Joints Catalog – Technical Manual (NA)
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