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Straight Coupler

Maxi Pro

Product Information

>B< MaxiPro is a copper press fitting system for use with Lawton copper tubes for air-conditioning and refrigeration applications.
>B< MaxiPro fittings can be used with soft annealed, half-hard or hard Lawton copper tube conforming to both EN-12735-1 or ASTM B-280.
>B< MaxiPro fittings provide a secure, permanent leak-proof joint which can be completed in a significantly less time than a typically brazed joint.
Another big advantage to using >B< MaxiPro is that it avoids the need for a hot works permit and the risk of fire on site.

An innovative press system, which is quick and simple to install, providing a secure and permanent joint. Designed for air-conditioning and refrigeration applications.

>B< MaxiPro is a robust press system, which is quick and simple to use providing a secure and permanent joint. Compared with traditional techniques it significantly improves productivity through greatly reduced installation time and enhanced working flexibility.

Features and benefits:

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

No nitrogen purge: >B< MaxiPro is a mechanical joint, thus eliminating the need for nitrogen purge during the jointing process

Lower installed cost: A professional fitting which is quick and simple to install, saving time and money.

Higher productivity, improved flexibility: Work may be completed during working hours / public access, by a single employee.

Site access: Easy access to work sites, no gas bottles required.

Quality designed in: Reliable, repeatable, permanent, tamper-proof connections every time.

3-point press: Three press points, one each side of the bead, and one press compressing the O-ring. This provides a permanent and secure joint.

High quality O-ring: A high quality HNBR O-ring forms a secure leak-free joint when pressed.

Protected O-ring: Lead-in edge design aids tube insertion and helps protect the O-ring from damage or displacement.

Fitting identification: Fittings are marked >B< MaxiPro and identified with a pink mark indicating their suitability for high pressure air-conditioning and refrigeration applications.

Electrical continuity: Maintains earth continuity without the need for additional earth continuity straps.

Certification: >B< MaxiPro is UL listed, refrigerant fitting SA44668.* >B< MaxiPro is UL listed, approved use for field and factory installations.*

Field proven: Press-fit technology, field proven over 20 years and millions of installed fittings worldwide.

Guarantee: When professionally installed by a trained and certified >B< MaxiPro installer, >B< MaxiPro is covered by a five year extended guarantee.

Support: Backed by Conex Bänninger’s experienced technical support and customer services teams.

Compact tooling: Light compact tooling provides easy access to tightly spaced tube runs.

Tooling concept: We recommend using tried and tested ROTHENBERGER tools and jaws.

*Please refer to UL’s online certification database for full details of listings.

Instructions for Use

General
Conex Bänninger >B<MaxiPro fittings must be installed by an installer who is appropriately trained and qualified to work on air conditioning and refrigeration installations and certified via the >B< MaxiPro training course. All installations must be completed in line with local regulations and by-laws governing the installation, and all applicable health and safety practices must be adhered to. When using the press tools, care must be taken to ensure hands are kept away from the jaw during the pressing process. Always wear ear and eye protection.

Important
Select the correct size of tube, fitting and jaw for the job. Ensure the fitting and tube are kept free of any dust or dirt and that the O-ring is undamaged. Check the inner pressing contour of the jaw is free of dirt and debris. Do not force tube ends together prior to making joints. Joints should only be made on an unstressed pipework assembly.

Remarks

A joint is finished after one complete compression cycle of the tool.
Do not press any >B< MaxiPro fitting more than once.
Pipework alignment must be completed prior to pressing.
Do not rotate joints after they have been pressed.

Maximum operating pressure: 48 bar, 4800 kPa, 700 psig.

Operating temperature range: -40°C to 121°C, -40°F to 250°F.

Compatible refrigerants: R-32, R-134a, R-404A, R-407C, R-407F, R-410A, R-507, R1234ze, R1234yf, R-718, R-450A,R-513A, R-448A, R-449A, R-407A, R-427A, R-438A, R-417A and R-422D.

Not for use with Ammonia (R-717).

Compatible oils: POE, PAO, PVE, AB and mineral oils.

>B< MaxiPro Installation Guide

Downloads

>B< MaxiPro technology:

3-point press:

>B< MaxiPro benefits from a 3-point press; one each side of the bead, and one press point compressing the O-ring. This provides a permanent and secure joint.

Three press points, one each side of the bead and one press point compressing the O-ring.
Tube stop.
HNBR O-ring.
Hook.
Fitting socket.
Bead.

In tests, press fittings are up to three times faster to install than brazing.

Technical data
Parameters	Capability
Applications	Air-conditioning and refrigeration
Connections	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)
O-ring	HNBR
Approved oils	POE, PAO, PVE, AB and MO
Maximum operating and abnormal pressure	48 bar / 4800 kPa / 700 psi
O-ring temperature range	-40 °C to 140 °C / -40 °F to 284 °F
Burst pressure >3 x maximum operating and abnormal pressure EN 378-2	>144 bar / >14400 kPa / >2100 psi
Leak tightness	Helium £ 7.5 × 10-⁷Pa.m³/s at +20 °C, 10 bar
Vacuum	200 microns
UL listing continuous operating temperature	-40 °C to 121 °C / -40 °F to 250 °F
Compatible refrigerants	R-1234yf, R-1234ze, R-125, R-134a, R-290, R-32, R-404A, R-407A, R-407C, R-407F, R-407H, R-410A, R-417A, R-421A, R-422B, R-422D, R-427A, R-438A, R-444A, R-447A, R-447B, R-448A, R-449A, R-450A, R-452A, R-452B, R-452C, R-454A, R-454B, R-454C, R-457A, R-459A, R-507A, R-513A, R-513B, R-600A and R-718.

* Please refer to >B< MaxiPro Technical Brochure – Tube Compatibility Table.
** When using refrigerants classified A2L (lower flammability), A2 (flammable) and A3 (higher flammability) ensure that all appropriate standards, local rules and regulations, codes of practice and by-laws are adhered to.