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HVAC Stop Valves and Brazed Valve Assemblies | Custom AC Refrigerant Valves
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HVAC Stop Valves and Brazed Valve Assemblies | Custom AC Refrigerant Valves

HVAC Stop Valves and Brazed Valve Assemblies | Custom AC Refrigerant Valves

1.Turnkey Brand Sourcing: We don't just braze; we source. We can procure your preferred brand valve bodies (Sanhua, Danfoss, etc.) and expertly braze them into custom assemblies, simplifying your supply chain.

2.Leak-Proof Performance: Engineered for R32/R410A high-pressure systems, ensuring absolute system isolation during maintenance and operation with zero refrigerant loss.
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Products Description

HVAC Stop Valves & Brazed Assemblies

Product Introduction

Installed at the critical connection points between indoor and outdoor AC units, the stop valve is essential for system maintenance and refrigerant control. Our valve assemblies facilitate the opening and closing of the refrigerant circuit, ensuring safe and efficient operation during both installation and servicing.

⚠️ Value-Added Service: Turnkey Sourcing & Brazing

Support customer-designated brand valve body sourcing and brazing. We can procure your preferred brands (e.g., Sanhua, Danfoss) and expertly braze them onto customized copper pipe configurations, saving you multiple procurement steps.
Product Features
  • Precision Operation: Features a smooth valve stem mechanism for reliable opening and closing, ensuring zero leaks during system maintenance.
  • Advanced Sealing Technology: Utilizes imported, high-quality sealing materials specifically designed for R410A and R32 high-pressure refrigerants, preventing aging and leakage.
  • System Safety: Provides absolute isolation of the refrigerant circuit, protecting the compressor and ensuring safe operation during after-sales service.
Application Scope
  • Applicable Refrigerants: R134a, R22, R407C, R410A, R32, etc.
  • Applicable Medium Temperature: -30°C ~ +120°C
  • Applicable Ambient Temperature: -30°C ~ +120°C
Technical Specifications (For Reference)
Model Applicable Refrigerant Applicable Ambient Temp (°C) Applicable Medium Temp (°C) Applicable Pressure (MPa)
F1 R32, R410A, R134a, R22 -30 ~ +120 -30 ~ +120 High: 4.2 / Low: 1.5
F4 R32, R410A, R134a, R22 High: 4.2 / Low: 2.0
Basic Performance Parameters
Spec Conn. Pipe Dia. Nominal Dia. One-Way Valve Port Capillary Welding Port Max Working Pressure Installation Torque (N·m) Applicable Torque (N·m)
D04 5.2 / 6.35 (4.8) 4.5 7.1~7.6 (6.5) 7.1~13 (6.3) 4.2 2.0~2.5 6, 7.1, 7.5
D06 6.2 / 7.94 (6.0) 5.0 7.6~8.8 (7.0) 5.9~8.8 (6.5) 8, 10, 11
D08 7.0 / 7.94 (8.0) 5.0 7.6~9.0 (8.0) 8.0 12, 13, 14
D10 9.52 (10.0) 6.0 9.7~11.5 (10.5) 9.7~12.0 (8.0) 15, 17, 18
D12 12.0 / 12.7 (12.0) 8.5 12.0~14.0 (12.5) 11.5~16.5 (12.0) 18, 20, 22

* Note: Dimensions and specifications are subject to customization based on customer requirements. Please contact us for detailed CAD 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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