The NIBCO 1 in. Copper X 3/4 in. D MIP Copper Pipe Adapter is the reliable, lead-free solution you need when transitioning from a copper supply line to a 3/4" male-threaded connection. Crafted from durable copper and designed for above-ground use, this adapter delivers a secure, code-compliant connection that stands up to everyday plumbing demands.
What makes this adapter special
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Lead-free copper construction: Safe for potable water and built to meet contemporary plumbing standards, giving you peace of mind for every drop that travels through your pipes.
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Dual-end design: 1" copper tube end on one side and 3/4" male iron pipe (MIP) thread on the other, enabling a straightforward transition between copper piping and standard threaded fittings.
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Residential-grade reliability: Perfect for appliance hookups, fixtures, and service lines where a sturdy copper-to-MIP connection is required.
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Bagged packaging: Sold as a single piece with protective packaging to prevent damage during shipping and handling.
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Brand you can trust: NIBCO fittings are known for precise tolerances and long-lasting performance in everyday plumbing scenarios.
Ideal applications
Use this adapter when you need to connect a 1" copper tube supply to a 3/4" MIP inlet, such as.
- Water heater and appliance hookups where a copper line must feed a 3/4" threaded valve or connector
- Repairs or retrofits that require a copper-to-MIP transition without replacing existing piping
- Above-ground, indoor plumbing projects in homes or light commercial settings
Installation tips
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For the copper end: Solder into place using your preferred flux and solder method, ensuring a clean, dry joint for a strong seal.
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For the MIP end: Apply a suitable pipe-thread sealant or PTFE tape on the male threads, then tighten securely by hand and finish with a wrench—avoid over-tightening to prevent thread damage.
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Inspect for leaks: After installation, run water slowly to check the joint before putting the line into full service.
Specifications at a glance
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Material: Copper
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End 1: 1" Copper
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End 2: 3/4" MIP (Male Iron Pipe)
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Product type: Pipe adapter
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Packaging: Bagged
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Compatibility: Copper piping systems; standard 3/4" MIP fittings
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Underground rated: No
With its lead-free copper construction and precise dimensions, this NIBCO adapter provides a dependable, code-compliant bridge between copper tubing and threaded fittings. Whether you’re upgrading an old fixture, tying in a new appliance, or completing a quick bathroom remodel, this 1 in. to 3/4 in. MIP adapter is a practical, long-lasting choice that helps you finish the job with confidence.
