K65 Reducing Coupler
Copper Fittings
| Part | Description | Size 1 | Size 2 | Bag | Box |
|---|---|---|---|---|---|
| K65CP1.18X12 | 1.1/8" X 1/2" REDUCER COUPLER K65 | 1 1/8" | 1 1/2" | 5 | 100 |
| K65CP1.18X78 | 1.1/8" X 7/8" REDUCER COUPLER K65 | 1 1/8" | 7/8" | 5 | 100 |
| K65CP1.38X1.18 | 1.3/8" X 1.1/8" REDUCER COUPLER K65 | 1 3/8" | 1 1/8" | 1 | 60 |
| K65CP1.38X12 | 1.3/8" X 1/2" REDUCER COUPLER K65 | 1 3/8" | 1/2" | 1 | 60 |
| K65CP1.38X34 | 1.3/8" X 3/4" REDUCER COUPLER K65 | 1 3/8" | 3/4" | 1 | 60 |
| K65CP1.38X58 | 1.3/8" X 5/8" REDUCER COUPLER K65 | 1 3/8" | 5/8" | 1 | 60 |
| K65CP1.38X78 | 1.3/8" X 7/8" REDUCER COUPLER K65 | 1 3/8" | 7/8" | 1 | 60 |
| K65CP1.58X1.18 | 1.5/8" X 1.1/8" REDUCER COUPLER K65 | 1 5/8" | 1 1/8" | 1 | 30 |
| K65CP1.58X1.38 | 1.5/8" X 1.3/8" REDUCER COUPLER K65 | 1 5/8" | 1 3/8" | 1 | 30 |
| K65CP1.58X34 | 1.5/8" X 3/4" REDUCER COUPLER K65 | 1 5/8" | 3/4" | 1 | 30 |
| K65CP1.58X78 | 1.5/8" X 7/8" REDUCER COUPLER K65 | 1 5/8" | 7/8" | 1 | 30 |
| K65CP12X38 | 1/2" X 3/8" REDUCER COUPLER K65 | 1/2" | 3/8" | 5 | 100 |
| K65CP2.18X1.58 | 2.1/8" X 1.5/8" REDUCING COUPLER K65 | 2 1/8" | 1 5/8" | 1 | 30 |
| K65CP2.58X2.18 | 2.5/8" X 2.1/8" REDUCER COUPLER K65 | 2 5/8" | 2 1/8" | 30 | 30 |
| K65CP34X58 | 3/4" X 5/8" REDUCER COUPLER K65 | 3/4" | 5/8" | 5 | 100 |
| K65CP58X12 | 5/8" X 1/2" REDUCER COUPLER K65 | 5/8" | 1/2" | 5 | 100 |
| K65CP78X34 | 7/8" X 3/4" REDUCER COUPLER K65 | 7/8" | 3/4" | 5 | 100 |
- In refrigeration, and in particular in the area of supermarket refrigeration systems, more and more ecology-oriented plant concepts are being implemented.
- The modern, environment-friendly refrigerant CO2 that is used here leads to high operating pressures. For these applications the new K65 tube system is available.
- Tubes and fittings are made of the high-strength copper alloy K65 which has already been used with success in electrical engineering and the automotive industry.
- K65 allows economical installation of refrigeration systems with operating pressures up to 120 bar.
- K65 has good processing properties which are similar to those of copper.
- K65 tubes may be brazed to K65 fittings in the traditional way.
- K65 fittings are manufactured by IBP Conex. Safety ensured by two well-known manufacturers, K65 tubes and K65 fittings fall under a joint system guarantee that includes CO2 applications up to 120 bar for the items listed.
Easy to identify – even after installation
- K65 tubes and fittings are marked appropriately, so that the system components can be clearly identified at all times.
- The material is slightly magnetic and can easily be distinguished from copper by means of a neodymium magnet – a helpful, practical advantage.
Economical
- The main advantage is the mechanical strength of K65. Because of the high strength of the material, the K65 product can be made with comparatively thinner walls. The light weight of tubes made of K65 means not only a saving in material, but also easier handling, for example when mounting the tubes on ceilings.
Technical Data
Product Overview
Lawton K65 fittings are designed for high-pressure refrigeration and air conditioning systems, particularly CO₂ (R744) applications. Manufactured from Wieland K65 (CuFe2P / CW107C) material, these fittings provide exceptional strength and pressure resistance for commercial and industrial installations.
Applications
- High-pressure air conditioning systems
- Refrigeration piping systems
- CO₂ supermarket refrigeration
- Heating systems
- Solar engineering installations
Market Sectors
- Commercial
- Industrial
Material Specifications
| Property | Specification |
| Material | Wieland K65 (CuFe2P / CW107C) |
| Manufactured From | Wieland K65 Tube |
| End Configuration | Capillary Brazing Ends |
| Maximum Working Pressure | 130 bar |
| Service Temperature Range | -196°C to +150°C |
| Product Marking | >B< K65, (dimension), 130 BAR |
| Material Identification | Slightly magnetic for easy identification from copper |
| Guarantee | 75 Years* |
*Subject to standard Terms & Conditions. Please refer to our website for full details.
Standards & Compliance
| Category | Standard |
| Dimensional Standard | ASME B16.22 |
| Material Standards | EN 12449, VdTÜV Material Data Sheet 567 |
| Design Standards | EN 12735-1, EN 12735-2, EN 378-1, EN 378-2, EN 14276-1, EN 14276-2, AD 2000-Merkblatt W 0 & W 6/2 |
Jointing Method
| Property | Specification |
| Jointing Method | Brazing |
| Filler Material | Minimum 2% Silver Brazing Alloy |
| Installation Requirement | Professional processing recommended |
Material Composition
| Element | Minimum (%) | Maximum (%) |
| Copper (Cu) | Balance | – |
| Iron (Fe) | 2.10 | 2.60 |
| Phosphorus (P) | 0.015 | 0.150 |
| Zinc (Zn) | 0.050 | 0.200 |
| Lead (Pb) | – | 0.030 |
| Other Elements (Total) | – | 0.200 |
Available Sizes
| Nominal Size | Tube O.D. (mm) | ASME B16.22 Nominal Size | Size Code |
| 3/8″ | 9.52 | 1/4″ | 003 |
| 1/2″ | 12.70 | 3/8″ | 004 |
| 5/8″ | 15.87 | 1/2″ | 005 |
| 3/4″ | 19.05 | 5/8″ | 006 |
| 7/8″ | 22.23 | 3/4″ | 007 |
| 1.1/8″ | 28.57 | 1″ | 009 |
| 1.3/8″ | 34.92 | 1.1/4″ | 011 |
| 1.5/8″ | 41.27 | 1.1/2″ | 013 |
| 2.1/8″ | 53.97 | 2″ | 017 |
| 2.5/8″ | 66.67 | 2.1/2″ | 021 |
