Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Foam Type
- Product Type
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Ready-to-Use Product Features
- Resistance to Moisture Vapor
The closed cell structure and unique formulation inherently resists moisture vapor intrusion. For most indoor applications, K-FLEX® PE needs no additional protection. Additional vapor barrier protection may be necessary when installed on cold systems located in high humidity environments.
Applications & Uses
- Markets
- Applications
K-FLEX® PE is recommended for applications with service temperatures ranging from -200°F (-129°C) to +200°F (93°C). The product is used to retard heat gain or loss and prevent condensation on below-ambient applications including cold water plumbing, chilled water, and industrial process lines, among others. It also can be used to prolong the time to freezing and can be used with heat tracing tapes. It also retards heat loss from medium hot systems, including hot water plumbing. K-FLEX® PE is used in both residential and commercial applications
Outdoor Application: K-FLEX® PE is designed for indoor or outdoor use. For UV exposure (rooftop applications) K-FLEX® PE must be protected with an approved coating or jacketed. Installation of outdoor insulation shall comply with all applicable state and local code requirements. Coating (where coatings are allowed) or jacketing of K-FLEX® PE should be done immediately after installation to minimize the possibility of melting due to concentrated light that can occur in the vicinity of reflective surfaces. Contact K-FLEX® USA Technical Support for coating recommendations.
Underground Application: K-FLEX® PE is acceptable for use in buried applications when installed above the water table. Below the water table, lines must be encased in a conduit to protect them from problems associated with ground water intrusion and compaction.
- Installation
K-FLEX® PE is flexible (even at low temperatures), durable (non-fracturing and skin is resistant to tearing from handling and environment), safe to handle (non-dusting and non-abrasive) and lightweight for an efficient installation. K-FLEX® recommends that insulation be installed on nonoperational systems with clean, dry surfaces in ambient conditions between 40°F and 110°F. Properly sized tubing can be slid over piping and copper fittings or can be applied to existing lines using the seam-seal product. All butt joints, termination points, and open ends should be sealed with an approved contact adhesives, i.e. K-FLEX® 320, 620, 720, or 1120 depending on the requirements of the application, making sure both surfaces to be joined are coated. Longitudinal seams should faced downward and vapor stops should be installed as needed. Fittings (elbows, tees, and p-traps) and special parts (flanges, valves, etc) can be field-fabricated from insulation tubes and sheet. ASTM C1710, Installation Guide for Flexible Closed Cell Foams, and the K-FLEX® Installation Manual should be used as comprehensive installation guides.
Properties
- Physical Form
- Odor
- None
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Corrosion Resistance (Steel, Copper, AL) | None | — | ASTM C665 |
| Flame/Smoke Rating ( 1-1/2” Thickness) | 25 - 50 | — | ASTM E84 |
| Fungi Resistance | Excellent | — | UL 181 |
| Linear Shrinkage (200°F) | -1.2 | % | ASTM C1427 |
| Lower Use Limit | -200.0 | °F | — |
| Microbial Resistance | Excellent | — | ASTM G21 |
| Nominal Density | 1.5±0.5 | pcf | ASTM D1622 |
| Ozone Resistance (50 mPa) | No Cracks | — | ASTM D1171 |
| Thermal Conductivity (24°C) | 0.039 | W/(m·K) | ASTM C177 OR C518 |
| Thermal Conductivity (38°C) | 0.04 | W/(m·K) | ASTM C177 OR C518 |
| Thermal Conductivity (49°C) | 0.042 | W/(m·K) | ASTM C177 OR C518 |
| Upper Use Limit | 200.0 | °F | ASTM C411 |
| VOC Content | max. 0.22 | mg/m3 | CDPH Standard Method v 1.2 |
| Water Absorption | max. 0.20 | % | ASTM C209 |
| Water Vapor Permeability | max. 0.05 | — | ASTM E96 |
Regulatory & Compliance
- Specification Compliance
- ASTM C1427 Type I Pipe, Type II Sheet (Specification for Extruded Preformed Flexible Cellular Polyolefin Thermal Insulation in Sheet and Tubular Form.)
- ASTM E84 25/50-rated (to 1-1/2”) - tested to UL 723, NFPA 255, CAN/ULC S102.2-18
- UL 94 HF-1 Flammability Classification (#E300774)
- UL Greenguard Gold Certified (#116441-420)
- Contains no halogens
- Fiber Free
- Non-dusting
Technical Details & Test Data
- Flame and Smoke Rating
K-FLEX® PE in wall thicknesses of 1” (25mm) and below has a flame spread rating of 25 or less and a smoke development rating of 50 or less when tested per ASTM E84, “Surface Burning Characteristics of Building Materials”. Numerical flammability ratings alone may not define the performance of products under actual fire conditions. They are provided only for use in the selection of products to meet specified limits.
- Dimensions
SERVICE TEMPERATURE 50°F (10°C) 35°F (2°C) 0°F (-18°C) -20°F (-29°C) Pipe Size Mild Normal Servere Mild Normal Servere Mild Normal Servere Mild Normal Servere 3/8" ID to 1-1/8 ID 3/8" 3/8" 3/4” 3/8" 1/2” 3/4" 1/2" 3/4" 1/2" 1" 1-3/8 ID to 4-1/2" ID 3/8" 3/8" 3/4” 3/8" 3/4" 1" 1/2" 1" 3/4" Range
Wall Thickness (nominal) 3/8”, 1/2”, 3/4”, and 1” - (10, 13, 19 and 25 mm)
Inside Diameter, Tubular Form 3/8” - 4-1/2” ID - (10 mm ID to 114 mm ID)
Length of Sections, Tubular Form 6’ (1.83m)
Nominal Insulation I.D. Copper tube size (nom. I.D. plumbing) Copper tube size (O.D. HVAC/R) IPS nominal 3/8” 1/2” 3/4” 1” 3/8” 1/4” 3/8” 1/8” 2.6 3.5 5.5 8.4 1/2” 3/8” 1/2” 1/4” 2.5 3.3 5.2 7.9 5/8” 1/2” 5/8” 3/8” 2.9 3.2 5.3 7.4 3/4” 5/8” 3/4” 1/2” 2.3 3 5.3 7.3 7/8” 3/4” 7/8” – 2.2 3.1 5.3 7 1” – – 3/4” 2.2 3.1 5.2 7.2 1-1/8” 1” 1-1/8” – 2.2 3 5.4 6.9 1-1/4” 1-1/8” 1-1/4” – 2.2 3.2 5.3 6.8 1-3/8” 1-1/4” 1-3/8” 1” 2.1 3.1 5.1 7.2 1-5/8” 1-1/2” 1-5/8” 1-1/4” 2.4 3 5 6.9 2” – – 1-1/2” 2.3 2.9 4.8 6.6 2-1/8” 2” 2-1/8” – 2.3 2.9 4.8 6.5 2-3/8” – – 2” 2.3 2.9 4.7 6.4 2-5/8” 2-1/2” 2-5/8” – 2.2 3 4.6 6.2 2-7/8” – – 2-1/2” 2.2 3 4.5 6.1 3-1/8” 3” 3-1/8” – 2.2 3 4.5 6.1 3-1/2” – – 3” 2.3 3 4.5 6 3-5/8” 3-1/2” 3-5/8” – 2.3 3.1 4.5 6 4-1/8” 4” 4-1/8” – 2.2 3.1 4.5 5.8 4-1/2” – – 4” 2.3 3.1 4.6 5.9
Packaging & Availability
- Availability
K-FLEX® PE is black in color and is available in both semi-slit and seam-seal 6’ lengths in wall thickness of 3/8”, 1/2”, 3/4” and 1” and diameter sizes ranging from 3/8” ID to 4-1/2” ID. The selfseal version is quick and easy to install.