227 Enterprise – VRF Joints and Refrigerant Copper Fittings

Headers

Copper Components

DA Series With XLPE Insulation

Premium VRF Copper Joints with UV‑Stabilized Fire Grade XLPE Insulation 

DA Series Y‑Joints enable VRF/VRV systems to connect multiple indoor units to a single outdoor unit, supporting diverse layouts in buildings of varying sizes. With its multi‑step design, the joint fits any VRF/VRV system.

The UV‑stabilized Fire Grade XLPE insulation prevents sweating, ensures long‑term thermal stability, and offers excellent moisture and chemical resistance. Its closed‑cell structure maintains consistent insulation performance, delivering reliable, long‑lasting operation for advanced HVAC installations.

XLPE
Insulation

FEATURES OF DA Series With XLPE Insulation

Easy installation design

Easy installation design

FR Grade

FR Grade

RoHS & CE compliant

RoHS & CE compliant

Chemical & Abrasion Resistant

Chemical & Abrasion Resistant

UV-protected

UV-protected

Product specification

Pipe-A Pipe-B Pipe-C
Pi-KHRP-22T (Gas Side) 12.7 (1/2) – 15.88 (5/8) – 19.05 (3/4) 15.88 (5/8) – 12.7 (1/2) 15.88 (5/8) – 12.7 (1/2)
Pi-KHRP-22T (Liquid Side) 9.52 (3/8) 9.52 (3/8) – 6.35(1/4) 9.52 (3/8) – 6.35(1/4)
Pi-KHRP-33T (Gas Side) 22.22 (7/8) – 19.05 (3/4) 19.05 (3/4) – 15.88 (5/8) 15.88 (5/8) – 12.7 (1/2)
Pi-KHRP-33T (Liquid Side) 9.52 (3/8) 9.52 (3/8) – 6.35 (1/4) 9.52 (3/8) – 6.35 (1/4)
Pi-KHRP-72T (Gas Side) 31.75 (11/4) -28,58 ( 11/8) – 25.4 (1) 25.4 (1) – 19.05(3/4) – 15.88 (5/8) 19.05 (3/4) – 15.88 (5/8) – 12.7 (1/2)
Pi-KHRP-72T (Liquid Side) 15.81 (5/8) – 12.7 (1/2) 12.7 (1/2) – 9.52 (3/8) 12.7 (1/2) – 9.52 (3/8) – 6.35 (1/4)
Pi-KHRP-73T (Gas Side) 38.10 (11/2) – 31.75 (11/4) 31.75 (11/4) – 28.58 (11/8) – 25.4 (1) 25.4 (1) – 19.05 (3/4) – 15.88 (5/8)
Pi-KHRP-73T (Liquid Side) 15.88 (5/6) – 19.05 (3/4) 19.05 (3/4) – 15.88 (5/8) – 12.7 (1/2) 15.88 (5/8) – 12.7 (1/2) – 9.52 (3/8)

OUR Products

Universal<br> Branch Pipe

Universal
Branch Pipe

Precision-engineered universal branch pipe ensuring cross-OEM compatibility and leak-proof VRF connections.

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DA<br> Series

DA
Series

Precision-engineered joints and fittings designed for performance in DA Series VRF/VRV applications.

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ME<br> Series

ME
Series

Reliable copper fittings engineered to meet ME Series network specifications.

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MI<br> Series

MI
Series

Durable refnet joints and branch pipes crafted for reliability in MI systems.

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TA<br> Series

TA
Series

Precision TA Headers and refrigerant distributors for fit in SMMS & TA Header Series

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GR<br> Series

GR
Series

Specialized fittings offering corrosion resistance and leak-proof integrity for GR heat recovery systems.

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BSR<br> Series

BSR
Series

Pre-insulated Branch Piping Kits for streamlined, error-free installation across OEM VRF platforms.

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LG<br> Series

LG
Series

Compatible copper Y-joints and distributors meeting LG Multi V system standards.

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HIT<br> Series

HIT
Series

Custom-tooled fittings and joints ensuring optimal compatibility for HIT Series.

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HAE<br> Series

HAE
Series

Robust VRF Refrigerant Branch Piping to handle pressure and demands of HAE units.

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CL<br> Series

CL
Series

Precision Copper REF Joints and assemblies engineered for operation in CL conditioning systems.

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LNX<br> Series

LNX
Series

Certified fittings and Copper Branch Pipe systems meeting specs for LNX VRF.

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MHI<br> Series

MHI
Series

Reliable VRF copper fittings ensuring flow harmony for MHI series

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SAM <br>Series

SAM
Series

Premium VRF piping systems engineered for peak efficiency.

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PNS <br> Series

PNS
Series

Accurately machined joints and pipes deliver reliability for PNS ECOi and U-Series VRF.

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TRN <br> Series

TRN
Series

High-performance Copper Y Fittings and piping kits engineered with TRN Series VRF systems.

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VRF Y<br> Joint

VRF Y
Joint

Core VRF Y joint ensuring balanced, turbulence-free refrigerant distribution for peak efficiency.

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VRF Branch <br> Piping

VRF Branch
Piping

All-in-one VRF refrigerant branch piping simplifying sourcing from one trusted supplier.

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VRF Refrigerant<br> Branch Piping

VRF Refrigerant
Branch Piping

Precision routing for multi-zone VRF system distribution.

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SAM <br> Headers

SAM
Headers

OEM-specific SAM Headers and distribution joints ensure refrigerant management in DVM S systems.

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TA <br> Headers

TA
Headers

Precision TA Headers and refrigerant distributors for fit in SMMS and Daiseikai series.

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Customized <br> Headers

Customized
Headers

Bespoke Customized Header assemblies designed to meet system layouts and multi-port requirements.

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Copper Compression <br> T Fitting

Copper Compression
T Fitting

Versatile Copper Compression T Fitting engineered for leak-free branches in refrigerant line sets.

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Copper Y  <br> Fitting

Copper Y
Fitting

High-flow copper fittings for balanced refrigerant division.

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Strainers <br>

Strainers

Inline protection against system contamination and debris.

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Mufflers <br>

Mufflers

Engineered components for reducing operational noise and vibration.

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Stubs <br>

Stubs

Short-length copper connectors for system integration and brazing.

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Commercial <br>Tees

Commercial
Tees

Heavy-duty fittings for main line distribution branches.

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Copper <br>Tee Joint

Copper
Tee Joint

Engineered for fast, balanced, and leak-proof main line splits.

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Y-Type  <br> Distributors

Y-Type
Distributors

Advanced distributors for precise refrigerant flow management.

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Unbrazed U & Y  <br> Fittings

Unbrazed U & Y
Fittings

Pre-fabricated joints for simplified, on-site assembly.

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Copper Y  <br> Joints

Copper Y
Joints

Durable copper joints for reliable refrigerant flow splitting.

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Tubular  <br> Assemblies

Tubular
Assemblies

Pre-assembled tubing modules for faster, error-free installation.

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EPS  <br> Insulation

EPS
Insulation

Economical, closed-cell insulation for thermal and condensation control.

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NBR  <br> Insulation

NBR
Insulation

Flexible, fire-resistant nitrile rubber insulation for demanding applications.

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XLPE  <br> Insulation

XLPE
Insulation

Cross-linked polyethylene foam for superior moisture and thermal resistance.

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Customized  <br> Insulation

Customized
Insulation

Bespoke insulation solutions cut and tailored to your components.

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Why 227 Enterprise

227 Enterprise is a leading XLPE Insulation Supplier, specializing in high‑grade XLPE insulation for VRF copper joints. Our DA Series is crafted with precision, offering unmatched thermal performance and durability. We provide customized solutions, rigorous quality testing, and competitive XLPE Insulation Price. With global logistics and expert support, we ensure your VRF systems operate efficiently and reliably.

Testimonial's

Our Blogs

FAq's

What is XLPE insulation?

XLPE (Crosslinked Polyethylene) is a thermoset insulation material renowned for its exceptional durability and performance. Created by cross-linking polymer chains, it offers superior thermal stability, excellent moisture and chemical resistance, and high mechanical strength compared to standard polyethylene, making it the premium choice for protecting critical VRF copper joints from energy loss and condensation.

Why is XLPE insulation important for VRF systems?

VRF systems are highly efficient but require precise refrigerant temperatures. XLPE insulation is vital as it minimizes unwanted heat gain or loss in piping, maintains system efficiency, and, crucially, prevents condensation that leads to corrosion, mold, and water damage. Its durability ensures this protection lasts for the system's entire lifecycle.

What is the temperature range of DA Series XLPE insulation?

Our DA Series XLPE insulation is engineered to perform reliably in a wide temperature range from -40°C to +90°C. This ensures optimal thermal protection and physical integrity in both extreme winter conditions and high-temperature summer operations, guaranteeing consistent VRF system performance in any climate or environment.

Is the XLPE insulation fire‑resistant?

Yes, absolutely. Our insulation is specifically formulated to be Fire Retardant (FR) Grade. It is designed to inhibit the spread of flame, produce low smoke, and self-extinguish, thereby significantly enhancing the overall fire safety profile of the building's HVAC installation and complying with stringent safety standards.

How does XLPE insulation prevent sweating?

Sweating occurs when warm, humid air contacts cold piping. Our XLPE insulation features a closed-cell structure that acts as a superior vapor barrier, drastically reducing water vapor transmission. This, combined with its low thermal conductivity, keeps the outer surface temperature above the dew point, effectively eliminating condensation and its associated problems.

Is the insulation UV‑protected?

Yes, our DA Series insulation is UV-stabilized. This critical additive protects the material from degradation caused by prolonged exposure to sunlight, preventing cracking, loss of elasticity, and thermal performance decline. This makes it perfectly suitable for outdoor sections of VRF piping without requiring an additional protective jacket.

What certifications does the DA Series insulation have?

Our product is RoHS (Restriction of Hazardous Substances) and CE compliant. These certifications verify that the material is free from restricted hazardous materials and meets European health, safety, and environmental protection standards, ensuring it is safe for use and acceptable in regulated global markets.

How do I install the DA Series insulated joints?

Installation is designed for efficiency. The insulation is pre-slit and pre-shaped. Simply open the slit, wrap it snugly around the cleaned copper joint, ensure a tight seal at all seams, and then secure it permanently with compatible HVAC-grade adhesive tape to form a continuous, unbroken insulation layer.

Can I get custom sizes and shapes?

As a top-tier manufacturer, we specialize in customized solutions. We can produce XLPE insulation in any precise size, thickness, or complex shape to fit unique Y-joint configurations or specific project requirements, using our specialised dies and moulds to ensure a perfect and professional fit every time.

What is the lifespan of XLPE insulation?

Our high-grade XLPE insulation is engineered for exceptional longevity and is designed to last the entire service life of the VRF system itself. When installed correctly under standard operating conditions, its performance and protective integrity typically remain uncompromised for decades, often exceeding 20-25 years. This extended lifespan is a direct result of its cross-linked structure, which provides outstanding resistance to environmental aging, thermal stress, and physical wear, ensuring long-term reliability and delivering superior lifecycle value for your investment.