New Pro-Series Precision CO2 Check Valve
A Pro-Series CO2 check valve rated for over 100 psi that opens at just 1 psi — CO2 flows one way only, water never back to the solenoid. Push-in connectors for CO2-resistant tubing.
Same-day dispatch on orders before 2 PM CET
Lifetime free technical support
Up to 10-year warranty
Free delivery on orders over €200
New Pro-Series Precision CO2 Check Valve
Real photos and videos from real customers
Tap a photo to see the gear in it — every tile is the customer's own post, credited and linked.
@noseworthy.aquatic.gardens
My beautiful collection of co2art products #co2art #plantedtanks #aquascaping
19 August 2026
In this photo
@myjungletherapy_
Crisis prevented by @akvarieboden_aalgard
Trying out @co2art for the first time, and it’s very promising so far!
#aquarium #aquascaping #plantedaquarium #natureaquarium #connectwithnature
7 May 2026
In this photo
Delivery, support, warranty and how to reach us — the short version. Every link opens the full page.
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Shipping
Free delivery on orders over €200. Orders placed before 2 PM CET usually ship the same day; regulators are assembled and tested first. Fully tracked FedEx delivery: 1–2 business days in Europe, 3–5 worldwide. Delivery details
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Support
Lifetime free technical support on every CO2Art product. Guides, manuals and a ticket form live in the support portal.
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FAQ
Cylinders and connections, bubble rates, drop checkers, what a dual-stage regulator does — the questions we hear most, answered. Read the FAQ
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Contact
Monday to Friday, 9:00–16:00 CET. We reply within one working day. Contact us
A CO2 check valve rated for high pressure — over 100 psi — with an incredibly low opening pressure of 1 psi. It lets the CO2 flow in one direction only, protecting the system from water flowing back and damaging the solenoid.
The push-in connectors make the inline installation easy. Compatible with every CO2Art CO2-resistant tubing; silicone tubing will not hold.
Shipping and delivery
Free delivery on orders over €200; otherwise €9.99 in Europe and €14.99 for the rest of the world. Orders placed before 2 PM CET are usually processed the same day — a regulator may need a little longer, because every one is assembled and tested before it ships. Delivery is fully tracked with FedEx: 1–2 business days in Europe, 3–5 worldwide. Customs or import duties outside the EU are charged on arrival. Shipping policy · Returns
Warranty and lifetime support
The Advance Professional and Professional dual-stage regulators carry a warranty of up to 10 years; every other CO2Art product carries the standard 2-year manufacturer's warranty. All customers receive lifetime free online technical support. Warranty terms
Satisfaction guarantee
If you are not satisfied with the quality of a product within 30 days of purchase, we send a full refund or a replacement at no charge. Mechanical defects found during the first year are repaired, with any parts needed, at no cost to you. The guarantee