K65 Fitting Reducer

Copper Fittings
PartDescriptionSize 1Size 2BagBox
K65RED1.18X121.1/8" X 1/2" FITTING REDUCER K651 1/8"1/2"5100
K65RED1.18X341.1/8" X 3/4" FITTING REDUCER K651 1/8"3/4"5100
K65RED1.18X581.1/8" X 5/8" FITTING REDUCER K651 1/8"5/8"5100
K65RED1.18X781.1/8" X 7/8" FITTING REDUCER K651 1/8"7/8"5100
K65RED1.38X1.181.3/8" X 1.1/8" FITTING REDUCER K651 3/8"1 1/8"160
K65RED1.58X1.381.5/8" X 1.3/8" FITTING REDUCER K651 5/8"1 3/8"160
K65RED1.58X421.5/8" X 42MM FITTING REDUCER K651 5/8"42MM130
K65RED1.58X781.5/8" X 7/8" FITTING REDUCER K651 5/8"7/8"130
K65RED12X381/2" X 3/8" FITTING REDUCER K651/2"3/8"5100
K65RED2.18X1.582.1/8" X 1.5/8" FITTING REDUCER K652 1/8"1 5/8"130
K65RED2.58X2.182.5/8" X 2.1/8" FITTING REDUCER K652 5/8"2 1/8"130
K65RED34X123/4" X 1/2" FITTING REDUCER K653/4"1/2"5100
K65RED34X383/4" X 3/8" FITTING REDUCER K653/4"3/8"5100
K65RED34X583/4" X 5/8" FITTING REDUCER K653/4"5/8"5100
K65RED58X125/8" X 1/2" FITTING REDUCER K655/8"1/2"5100
K65RED58X385/8" X 3/8" FITTING REDUCER K655/8"3/8"5100
K65RED78X127/8" X 1/2" FITTING REDUCER K657/8"1/2"5100
K65RED78X347/8" X 3/4" FITTING REDUCER K657/8"3/4"575
K65RED78X387/8" X 3/8" FITTING REDUCER K657/8"3/8"5100
K65RED78X587/8" X 5/8" FITTING REDUCER K657/8"5/8"5100
  • 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

Instagram LinkedIn TikTok YouTube
GET IN TOUCH

We’re here to help

Our experienced Sales and customer service teams are on hand to answer your enquiry.

CONTACT US