The company has introduced a new method for installing insulation on copper tubing used for refrigerant lines and chilled water systems. The design provides direct support of the copper tube while maintaining the integrity of the insulation, according to the manufacturer. Klo-Shure(r) Couplings are available to support 1.4- to 21/8-in. dia copper tubing and to secure 3/8- to 1-in. thick tubing insulation.