C & D Valve CD3603 3/16" Access Valve (Pack of 6)

The C&D Valve CD3603 Access Valve is a professional-grade T36 series fitting designed for high-integrity service ports in residential and commercial HVAC/R systems. This access valve pack of 6 features 1/4" male flare fittings with 3/16" O.D. copper tube extensions already brazed to the brass body. By utilizing pre-brazed components, technicians can avoid the risks of overheating internal seals during the manufacturing process and instead perform a simple copper-to-copper brazing connection in the field. This configuration includes a 1/8" MPT connection below the hex, providing versatility for manifold or compressor housing mounting. Each Schrader valve assembly comes equipped with a CD4450 valve core and a CD2250 heavy-duty brass wrench cap. The cap features a deep-seated neoprene seal to ensure a leak-proof secondary barrier, while the integrated core remover on the cap top streamlines service workflow during vacuum pull-downs or refrigerant charging.

• Streamlined Installation: Pre-brazed 3/16" copper extensions allow for rapid copper-to-copper soldering, reducing the heat-soak risk to the valve body.
• Technical Specifications: Features a 1/4" male flare access point with 1/8" MPT threads below the hex and compatibility with 1/4" and 5/16" step sizes.
• Industrial Durability: Machined from high-quality brass with a CD2250 wrench cap that provides a secure, leak-resistant neoprene seal.
• Standardized Compatibility: Designed for use with all common refrigerants and standard HVAC service gauges and charging hoses.
• Field Service Efficiency: The integrated core wrench on each cap eliminates the need for additional tools when replacing or tightening the CD4450 core.

Common Questions

What is the primary benefit of the brazed copper extension?
The pre-brazed extension allows technicians to solder the valve to the system using a copper-to-copper joint. This is faster and more reliable than brass-to-copper brazing and protects the valve seat from excessive heat during installation.

Are these valves compatible with high-pressure refrigerants like R-410A?
Yes, the CD3603 is engineered for the high-pressure environments typical of modern air conditioning and refrigeration, provided the internal core is properly seated and the brass cap is hand-tightened.

Does this pack include the valve cores?
Yes, each of the six valves in this pack comes fully assembled with a CD4450 valve core and a heavy-duty brass wrench cap for immediate installation.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.