Parflex IS - Intermittent Steam Purge Bundles are thermally insulated with a composite layer of fiberglass that allows for occasional, high-temperature steam purge up to 1100°F (593°C) while ensuring freeze protection during winter through the use of self-regulating heating cables. The bundles are properly insulated to ensure that the outer surface area of the bundle remains at or below 140°F (60°C) during steam purge conditions at the highest specified ambient temperature, meeting NEC Personnel Protection Code 427.12.

Standard Parflex IS designs come with an internal tinned copper braid on the heating cable for grounding purposes and a Fluoropolymer jacket over the heater to provide additional protection against harsh environments. The intermittent design permits the bundles to be steam purged for a period of 5 minutes once a day. During steam purge, the outer jacket surface temperature will not exceed 140°F (60°C). Review the literature provided on the Product Support tab for more information regarding Parflex IS - Intermittent Steam Purge Bundles.

Markets:
• Power Generation

Features/Benefits:
• High customizable to meet varying application requirements – multiple options are available for tubing material, tubing size, wall thickness, heating cable voltage, maximum steam purge temperature, cover material and color
• Self-regulating heating cables to ensure freeze protection during the winter
• Bundles are properly insulated to ensure that the outer surface area of the bundle remains at or below 140°F (60°C) during steam purge conditions at the highest specified ambient temperature
• Designed to provide a freeze protection temperature of 40°F (4.4°C) at the lowest specified ambient temperature
• Standard jacket is black, UV-resistant FR-PVC material for added protection in various operating environments
• Standard IS designs come with an internal tinned copper braid on the heating cable for grounding purposes and a Fluoropolymer jacket over the heater to provide additional protection against harsh environments

Applications:
• Freeze protection

Certifications/Compliance:
• Meets NEC Personnel Protection Code 427.12

Technical Specifications:
• The most common tube sizes requested are 3/8” and 1/2” Seamless Stainless Steel 316/316L/316H alloys in either an average wall specification, ASTM A269, or minimum wall specification, ASTM A213; other alloys and standards are available
• All IS - Intermittent Steam products are pressure tested prior to shipment
• Third party testing and witnessing is available upon request, including DNV, ABS and Lloyd's register; contact factory for complete details
• Black, UV-resistant FR-PVC is standard jacketing material; other jacketing materials are available upon request, including non-halogenated FR-TPE and Urethanes
• Cables are available in 120V and 208-277 volt, with heat outputs of 5, 10, 15 and 20 watt/ft.

OBSOLETE: IS – Intermittent Steam Purge Bundles for Freeze Protection