VISER Co., Ltd. · Heat Exchanger Business Division

Purpose-built for Data Centers,
Aquathermal & ESS —
LMTD 1°C Eco-Friendly Ultra-High Efficiency PHE

Korea's first PHE achieving LMTD 1°C — verified by KATRI independent testing. Officially designated K-Innovative Product by the Public Procurement Service (Dec 2025).

1°C

LMTD

 

28bar

MAX. PRESSURE

 

5 mdls

AHRI LLHE

K-Innovative · Dec 2025   AHRI LLHE · Jul 2025   ASME · Jul 2026

▶ Product Introduction Videos


Watch our VISER Heat Exchanger Business Division introduction videos. Learn about the VX Series and VISER's core technology in under 3 minutes.

PRODUCT VIDEO · 150s

FreeCooling Ultra-HE Plate Heat Exchanger

LMTD 1°C · AHRI Certified · K-Innovative — VX Series in 150 seconds

SHORTS

VISER Heat Exchanger Division

Quick intro to VISER's Heat Exchanger Business Division

   

02   Core Technical Features


The VX Series is engineered around four core technologies.

 

🌡️

① LMTD 1°C Ultra Efficiency

1°C / LMTD · KATRI Verified

  • KATRI independent third-party witness test certified
  • Maximum heat transfer at minimal temperature differential
  • FreeCooling — chiller-free operation
  • Energy cost savings — PUE minimization
 

🔩

② High-Pressure Design 25–28 bar

28bar / MAX. PRESSURE · 5 Models AHRI

  • Stable operation at 25–28 bar high pressure
  • Ready for large data centers & high-rise buildings
  • AHRI LLHE Standard 400 — 5 models certified
  • Custom specs available on request
 

⚙️

③ In-House Gasket Manufacturing

NBR·EPDM · FDA APPROVED

  • 100% in-house NBR & EPDM production
  • Patented EPDM compound technology applied
  • US FDA material testing approval obtained
  • Cost competitiveness & stable delivery
 

🌿

④ Eco-Friendly & ESG Design

CO₂ Reduced · ESG Compliant

  • Chiller-free FreeCooling operation mode
  • CO₂ reduction — carbon neutral aligned
  • Aquathermal energy policy compliant
  • Meets ESG management requirements

03   Product Specifications


All 5 models including VX-25B and VX-35B hold AHRI LLHE Standard 400 international certification. Max. working pressure 25–28 bar, LMTD ≤ 1°C. Custom specs available on request.

Specification VX-25B VX-35B 3 Add. Models
Max. Working Pressure 25 bar 28 bar 25 – 28 bar
LMTD Achieved ≤ 1°C ≤ 1°C ≤ 1°C
AHRI LLHE Cert. ✔ Certified ✔ Certified ✔ Certified
Gasket Material Patented EPDM Patented EPDM Patented EPDM
Primary Application Data Center / Aquathermal Data Center / Aquathermal Industrial / HVAC
ASME Audit Planned Jul 2026 Planned Jul 2026 Planned Jul 2026
ISO Certifications ISO 9001·14001·45001 ISO 9001·14001·45001 ISO 9001·14001·45001

※ All 5 models hold AHRI LLHE Standard 400 certification

※ Custom capacity, pressure & material specifications available upon request

Certifications & Designations

🏆

AHRI LLHE Certified

Standard 400 · 5 Models · Jul 2025

🏅

K-Innovative Product

Public Procurement Service · Dec 2025

G-PASS Designation

Government Performance Assured · PPS

📋

ISO 9001·14001·45001

Quality, Environmental & Safety Mgmt.

04   Application Areas & Full Product Lineup


Applicable across data center server cooling (FreeCooling), aquathermal heat pump systems, ESS battery thermal management, and diverse industrial sectors including high-rise buildings, hospitals, and factories.

🖥️

Data Center Cooling

Server FreeCooling / Cooling tower / PUE min.

🌊

Aquathermal Energy

River/lake heat source / Heat pump / Carbon-neutral

🔋

ESS Thermal Mgmt.

Battery heat dissipation / Temp. control / Safety

🏢

Building & HVAC

High-rise / HVAC integration / Hospitals & factories

제품 코드 Product Features
VX Series FreeCooling Ultra-HE Plate Heat Exchanger AHRI LLHE Certified · K-Innovative Product
DHU District Heating Unit Supply record: LH · SH · GH
BHU Box-Type Heat Exchanger Compact packaged unit
SHU Steam Line Heat Exchanger High-temp industrial processes

VISER operates a fully vertically integrated manufacturing system, producing 100% of rubber gaskets (NBR & EPDM) in-house — ensuring cost competitiveness and quality consistency. Holding ISO 9001/14001/45001, US FDA material approval, AHRI LLHE international certification, and K-Innovative Product designation, VISER is advancing toward its ASME audit (Jul 2026) as part of its global expansion strategy.

VISER Co., Ltd. · Heat Exchanger Business Division

🌐  www.viser.co.kr/en 📧  vsr@viser.co.kr 📞  +82-55-346-5575