Factory Wholesale K65 Copper End Cap, HVAC Refrigeration Seal Fitting, Leak-Proof Soldering Cap

Factory Wholesale K65 Copper End Cap, HVAC Refrigeration Seal Fitting, Leak-Proof Soldering Cap

1. Product Description
The Factory Wholesale K65 Copper End Cap is a high-performance pipe fitting specifically engineered for AC and supermarket refrigeration systems. Manufactured from high-grade wrought copper (C12200), this end cap provides a reliable, leak-proof seal for terminating copper tubing in high-pressure environments. Designed with precision soldering connections, it ensures permanent joint integrity and long-term durability. Each piece undergoes strict quality inspection to meet international standards, making it the preferred choice for HVAC contractors, refrigeration technicians, and wholesale distributors worldwide. With a minimum order quantity of just 1 PC and flexible pricing, we welcome both trial orders and bulk procurement.

2. Key Specifications

3. Product Application
This copper end cap is widely used in air conditioning lines, cold room evaporator connections, supermarket display case piping, and commercial freezer systems. It is also suitable for residential and industrial water supply pipelines where corrosion resistance and high-pressure tolerance are required. Its universal compatibility with standard copper tubes makes it an essential component for system termination, testing ports, or future expansion points.

4. Product Advantages

• Superior Pressure Resistance: Engineered to withstand up to 700 PSI, ensuring safe operation in R410A, R32, and R744 (CO₂) refrigeration systems.

• Leak-Proof Reliability: Precision-machined soldering surface guarantees a tight, permanent connection, minimizing refrigerant loss and maintenance costs.

• Corrosion Resistance: The high-purity copper material offers excellent resistance to oxidation and pitting, extending system lifespan.

• Consistent Quality: Manufactured under strict ISO-controlled processes, ensuring dimensional accuracy and batch-to-batch consistency.

5. Product Function
The primary function is to securely seal the end of a copper pipe, preventing fluid or refrigerant leakage. It also serves as a protective cover during system installation or transportation, keeping tubing interiors clean from debris and moisture. In maintenance scenarios, it allows for safe system isolation, enabling technicians to work on specific sections without draining the entire refrigerant charge.

6. Usage Instructions

1. Cut the copper pipe end squarely and deburr the inner and outer edges.

2. Clean the pipe surface and the inside of the cap with a wire brush or emery cloth until bright.

3. Apply an even layer of flux to both the pipe end and the cap interior.

4. Insert the cap onto the pipe end fully.

5. Heat the joint evenly with an oxy-acetylene or air-fuel torch, then apply solder (lead-free) until it flows completely around the joint.

6. Allow the joint to cool naturally; wipe off excess flux with a damp cloth.

7. Precautions

• Always use personal protective equipment (gloves, safety glasses) during brazing.

• Ensure the system is fully depressurized before installation or removal.

• Do not overheat the fitting during soldering, as this may weaken the copper material.

• Store in a dry, ventilated area to prevent surface tarnishing prior to use.

• Verify size compatibility with your tubing outer diameter before installation.

8. Shipping Information

• Delivery Time: 15–30 working days after order confirmation.

• Shipping Method: By sea, air, or express (DHL/FedEx) as per customer request.

• Tracking: Tracking number will be provided once shipped.

• All orders are dispatched promptly with proper documentation (commercial invoice, packing list, and certificate of origin if required).

9. Payment Terms

• Accepted Methods: T/T (Telegraphic Transfer), Western Union.

• Payment Schedule: 30% deposit upfront, 70% balance before shipment (for T/T). For Western Union, full payment is required prior to production.

• Currency: USD is preferred; other currencies are negotiable.

10. Packaging Details

• Standard Packaging: Each cap is individually wrapped in anti-rust paper and packed in strong export cartons with foam padding to prevent collision damage.

• Custom Packaging: Available upon request (e.g., branded labels, color boxes) with additional cost.

• Palletizing: Cartons are strapped on wooden pallets with shrink-wrap for container shipping, ensuring safe transit.

11. Returns, Exchanges & After-Sales Policy

• Quality Guarantee: All products are tested before shipment. If any defect is found upon arrival (manufacturing fault only), please contact us within 7 days of receipt with photos/videos for verification.

• Returns/Exchanges: Accepted only for quality-related issues. Items returned must be unused and in original packaging. Return shipping costs are borne by the buyer unless the fault is ours.

• Refund: After inspection confirms the issue, we will issue a full refund or send replacements at our expense.

• After-Sales Support: Our technical team is available via email or online chat to assist with installation inquiries or sizing questions. We respond to all messages within 24 hours.

• Note: Damage caused by improper installation, misuse, or system faults is not covered under warranty.