Brazed plate heat exchanger L ULTRA

copperstainless steelsteel

Overview
The L ULTRA brazed plate heat exchanger is purpose-designed for transcritical CO2 (R744) refrigeration and heat pump systems. Rated for operating pressures up to 140 bar and temperatures up to 150°C, it supports gas cooler, evaporator and suction‑line duties beyond the capability of standard brazed plate units.

Key Features

• 140 bar pressure rating: Suitable for the full operating range of transcritical CO2 systems including peak pressures at high ambient temperatures
• Plate geometry optimised for CO2: Corrugation pattern and plate thickness engineered for two‑phase CO2 heat transfer (evaporation, condensation, supercritical gas cooling)
• Compatible with CO2 system configurations: Gas cooler (supercritical), evaporator (subcritical) and suction‑line heat exchanger duties
• Compact footprint: High thermal performance in a reduced size for simplified OEM integration
• Low‑GWP refrigerant: Designed for CO2 (R744) with a GWP of 1, unaffected by F‑Gas restrictions

Design

• Connections: NPT internal/external, dual connections, Victaulic, flanges (DN80 PN40 / ANSI B16.5 3" Class 300), SORF soldering options
• Copper or stainless LUNA brazing
• Heating plates: stainless steel 1.4404 (AISI 316L)
• Front and rear plates: 1.4301 (AISI 304)
• Additional frame: painted carbon steel; protection sheets and cover plates

Applications

• Refrigeration systems (CO2 gas cooler and evaporator duty)
• Heat pumps
• Air conditioning
• Industrial and process cooling systems
• District cooling
• Chemical and petrochemical industry
• Oil refining
• Food industry heat exchangers

Technical specifications

• Design standards: ASME; PED; UL
• Max design pressure: L ULTRA — 140 BAR (2030 PSI); LUNA ULTRA — 70 BAR (1015 PSI)
• Max design temperature: 150° C / 302° F
• Heating plates material: stainless steel 1.4404 (AISI 316L) with copper or stainless (LUNA) brazing
• Front & rear plates: 1.4301 (AISI 304); additional frame: painted carbon steel
• Design types: copper or stainless brazing versions
• Connection types: NPT internal/external, dual connections, Victaulic, flanges (DN80 PN40 / ANSI B16.5 3" Class 300), SORF soldering
• Certifications: ASME; PED; UL