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Liquid Line Protection

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Pre-assembled Filter Drier with Capillary Tube | Custom HVAC Piping Assemblies
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Pre-assembled Filter Drier with Capillary Tube | Custom HVAC Piping Assemblies

Pre-assembled Filter Drier with Capillary Tube | Custom HVAC Piping Assemblies

1.Drop-in Installation: Pre-brazed assemblies with exact capillary lengths and routing minimize on-site fabrication, reducing assembly line errors and labor costs.

2.System Protection: High-capacity molecular sieve solid cores effectively remove moisture, acid, and solid particles to protect compressors and expansion valves from blockages and corrosion.
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Products Description

Pre-assembled Filter Drier with Capillary Tube

Product Introduction

This pre-assembled filter drier assembly integrates a high-efficiency solid core drier with a customized copper capillary tube and connection pipes. It is a critical component in the liquid line of HVAC and refrigeration systems, designed to remove moisture, acid, and solid contaminants while precisely regulating refrigerant flow into the evaporator.

⚠️ Custom Manufacturing & Integration

Built strictly to your system drawings. We tailor the capillary tube length, bend radius, and pipe routing to ensure a perfect, drop-in fit for your specific AC model, minimizing assembly time and eliminating on-site fabrication errors.
Key Features & Advantages
  • Integrated Flow Control: The precision-wound capillary tube is brazed directly to the filter drier outlet, ensuring accurate refrigerant metering and stable system pressures.
  • Superior Moisture & Acid Removal: Filled with a high-capacity 3A molecular sieve solid core, it effectively absorbs moisture and acids to prevent ice blockage and compressor corrosion.
  • High-Efficiency Filtration: The internal polyester mesh and stainless steel screen provide excellent filtration down to 20 microns, capturing solid particles and protecting downstream expansion valves.
  • Leak-Proof Construction: High-temperature brazed joints and a powder-coated copper shell guarantee durability against high-pressure refrigerants like R410A and R32.
Application Scope
  • Applications: Liquid line filtration and flow control in air conditioners, heat pumps, refrigerators, and commercial refrigeration units.
  • Applicable Refrigerants: R134a, R22, R407C, R410A, R32, etc.
  • Operating Temperature: -40°C ~ +120°C
Technical Parameters (For Reference)
Parameter Specification
Filter Core Type Solid Core (80% 3A Molecular Sieve + 20% Activated Alumina)
Filtration Precision 20 μm
Maximum Working Pressure 4.5 MPa
Burst Pressure ≥ 18 MPa
Connection Type Brazed (ODF) / Customized
Capillary Tube Specs Customized Length & Diameter

* Note: All dimensions, tube lengths, and connection sizes are fully customizable based on your technical drawings.


Q:1.Do you provide CE/UL certificates for the entire kit?

A: We provide UL/CE certified modules (like filter driers and charge valves) sourced directly from top-tier manufacturers. The certificates and test reports for these specific components come with the shipment. For non-electrical parts (like copper pipes and brackets), we provide material reports and d

Q:2.Are electrical cables included in the kit for the local market?

A: No. To ensure strict compliance and avoid regional electrical certification conflicts (such as CE/UL cable standards), electrical cables are intentionally excluded from our standard mechanical kits. This allows you to source local, fully certified cables and integrate them on your line, keeping your

Q:3.What exactly is included in your standard "Line Set Kit"?

A: Our standard kit includes five core mechanical modules: Y-Joints (or tees), pre-cut copper pipes with insulation, filter driers, charge valves, and vibration eliminators. Optional modules like sight glasses or accumulators are available upon request. We pack them according to your specific machine B

Q:4.Can you customize the copper pipe lengths and kit composition?

A: Yes. Because we aggregate from a flexible, top-tier supply chain, we can customize the copper pipe lengths (pre-cut and flared), insulation thickness, and the specific combination of components based on your exact assembly drawings. You don't need to meet a massive MOQ for the whole kit; we scal

Q:5.How do you handle the shipping and customs clearance documents?

A: Since a kit involves multiple HS codes (copper fittings, valves, brackets), we coordinate the commercial invoice and packing list clearly by item. We work closely with your freight forwarder to ensure the customs declaration matches the physical goods exactly, minimizing the risk of port delays. All

Q:6.What is the typical lead time for a BOM-matched kit?

A: After BOM confirmation and sample approval, the production of the core modules typically takes 20–30 days. Because we consolidate modules at our facility before shipping, you save the time you would normally waste waiting for different factories to deliver to your forwarder. We provide a single, un

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