Precision Plumbing & Heating Supplies
Heavy-duty forged brass compression fittings, shutoff ball valves, and high-temp stainless supply lines built for leak-free performance.
How It Works
Get precision plumbing and hydronic components delivered quickly in three easy steps.
Select Hardware
Choose your brass compression fittings, shutoff valves, or stainless supply lines in single units or bulk bundles.
Quick Checkout
Place your order with fast, 256-bit encrypted checkout and instant email confirmation.
Fast UPS Delivery
Dispatched directly from our distribution center and delivered to your doorstep or job site in 3-5 business days.
Plumbing & Heating Supplies
Choose precision-forged brass fittings, shutoff valves, and high-temp supply lines with multi-pack savings.
Pipe Fittings & AdaptersSave 26%Brass Heavy-Duty Compression Fitting Kit
Solid forged lead-free brass compression fittings with precision-tapered NPT threading. Rated up to 1,200 PSI and 250°F for leak-free connections across copper, brass, and PEX plumbing lines.
Heating & Flow ValvesSave 26%Brass Shutoff Ball Valve
Forged brass quarter-turn shutoff ball valve with chrome-plated brass ball and PTFE seats. Tested to 600 WOG for potable water systems, radiant loops, and boiler manifold isolation.
Hydronic Heating & Supply LinesSave 26%Stainless Braided Water Heater Supply Line
304 braided stainless steel connector designed for water heaters and hydronic loops. Features solid brass dielectric nuts and EPDM washers to prevent galvanic corrosion and leaks.
Built for Durability & Performance
Industrial-grade engineering designed to prevent leaks and endure demanding conditions.
1,200 PSI Pressure Tested
Every valve and fitting is factory hydro-tested to ensure zero leaks under heavy pressure.
Certified Lead-Free Brass
Forged from solid brass alloy fully compliant with safe drinking water standards.
Thermal Expansion Guard
Rated for up to 250°F continuous heat in boiler manifolds and water heater lines.
Trusted by Trade Professionals
Real feedback from plumbers, technicians, and contractors using our hardware daily.
“The brass compression fittings cut our installation time in half. Clean threading, zero burs, and held 100% tight under pressure test.”
Thomas B.
Master Plumber · Aug 2026
“We installed the 3/4" ball valves across a radiant boiler system. Smooth quarter-turn action and solid forged brass construction.”
Gregory K.
Hydronic Specialist · Aug 2026
“Replaced old flex lines with these stainless supply connectors. Solid brass nuts, flawless seal, and zero galvanic corrosion.”
Marcus V.
Facility Manager · Jul 2026
“Ordering contractor bundles saved our crew substantial budget compared to local supply house counter rates. Top quality.”
Darren P.
Mechanical Contractor · Jun 2026
Equip Your Next Job with Master-Grade Fittings
Order precision brass compression fittings, shutoff valves, and hydronic supply lines directly from Copperline Plumbing Foundry. Fast nationwide UPS shipping on every order.
Frequently Asked Questions
Quick answers about our plumbing hardware, shipping, warranties, and compatibility.
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