Conex B Maxi Pro | Hevac
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Conex B Maxi Pro

Conex B Maxi Pro View Large Image

Conex B Maxi Pro

Features and Benefits:

An innovative press system which is quick and simple to install providing a secure and permanent joint.

3-point press design– one press each side of the bead, and one press compressing the O-ring.

Lead-in edge design aids installation and helps protect the O-ring from damage or displacement.

Suitable for air-conditioning and refrigeration applications up to 48 bar.

Flame-free installation avoids the need for a fire permit and the risk of fire on site.

Mechanical joint, eliminates the need for nitrogen purge during the jointing process.

Covered by a 5 year product Guarantee when installed by a trained and certified >B< MaxiPro installer. Please refer to the >B< MaxiPro Guarantee document.

For safe and secure installation, >B< MaxiPro is supported by an installation training course.
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Technical Data




Air conditioning and refrigeration


Copper to copper

Approved tube*:
Copper tube conforming to

EN 12735-1 or ASTM-B280

Fitting / Tube range (inches)

1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1 1/8"

Fitting Material

Refrigerant grade copper 
(C12200 min 99.9% pure)



Approved oils

PVE, POE, PAO, AB and mineral oil

Maximum operating pressure

48 bar at 121°C (700 psig at 250°F)

Temperature range

-40°C to 140°C (-40°F to 284°F)

Leak tightness

Helium ≤ 7.5 × 10-7 Pa.m3/s at +20°C, 10 bar


200 microns

UL listing continuous operating temperature

121°C (250°F)

Compatible refrigerants

R-32, R-134a, R-404A, R-407C, R-407F, R-410A, R-507, R-1234ze, R-1234yf, R-718, R-450A, R-513A, R-448A, R-449A, R-407A, R-427A, R-438A, R-417A and R-422D

Approvals, standards ?and code compliance

UL 207 - file no. SA44668.

UL 109 - 7 Pull Test, compliant.

UL 109 - 8 Vibration Test, compliant.

UL 1963 - 79 Tests of Gaskets and Seals Used in Refrigerant Systems, compliant.

ISO 5149-2:2014, compliant.

ISO 14903, Tightness Test, compliant.

EN 378-2:2016, compliant.

EN 14276-2:2007+A1:2011, compliant.

EN 16084:2011, compliant.

ASTM G85-11, Standard Practice for Modified Salt Spray (Fog) Testing.

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