Is Giacomini a good brand for valves?

Giacomini S.p.A. is an Italian manufacturer of valves, fittings, and components for hydronic heating, plumbing, and radiant floor systems. Founded in 1951 in San Maurizio d'Opaglio in Italy's faucet district, Giacomini has grown into a global supplier with manufacturing facilities in Italy, Spain, and China, and distribution in over 50 countries. They are especially well-regarded for their radiant heating manifolds, thermostatic radiator valves, and PEX distribution systems.

What warranty does Giacomini offer on valves?

Giacomini offers Varies by product; typically 2-5 year manufacturer warranty.

Where is Giacomini made?

Giacomini is based in Italy, headquartered in San Maurizio d'Opaglio, Italy.

Giacomini Valves

Giacomini manufactures thermostatic radiator valves, zone valves, balancing valves, pressure reducing valves, and mixing valves for hydronic heating and plumbing systems. Their R470 and R401 series are widely used in radiant floor heating installations.

Founded 1951 Italy Varies by product; typically 2-5 year manufacturer warranty Official Website

Giacomini Valves Product Lines

R470 Thermostatic Valves R401 Mixing Valves Zone Valves Balancing Valves

Certifications & Standards

ISO 9001 UPC Listed CSA Certified

Valves How-To Guides

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How to Replace a Shut-Off Valve

Swap a stuck, leaking, or unreliable shut-off valve for a modern quarter-turn ball valve -- compression, threaded, and push-fit connections all covered.

How to Adjust a Pressure Reducing Valve

Test your water pressure, find the PRV on your main line, and adjust it to a safe 50-60 PSI -- before high pressure wears out your fixtures, appliances, and water heater.

How to Fix a Leaking Gate Valve

Stop a dripping gate valve stem -- tighten the packing nut, replace the packing, or swap the whole valve for a ball valve, depending on what the situation calls for.

Common Valves Problems

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Stuck Shut-Off Valve

Usually discovered during an emergency -- something is leaking and the valve will not budge. Older gate valves seize after years of disuse. Fix ranges from penetrating oil and patience to full replacement.

Leaking Valve Stem

Water dripping from around the valve handle or packing nut -- packing failure, not a pipe leak. Fix is usually tightening the nut or replacing the packing, often with the water still on.

PRV Failure -- High Water Pressure

Failing PRV lets dangerously high pressure into the house. Bursts supply lines, damages appliances, causes hammer, shortens fixture life, leaks everywhere. Normal is 40-60 PSI. Above 80 is dangerous and needs immediate attention.