New Pro-Series Precision CO2 Check Valve
Protect your CO2 equipment with the New CO2Art Check Valve! This clever device permits the flow of CO2 in only one direction.
Same-day dispatch on orders before 2 PM CET
Lifetime free technical support
Up to 10-year warranty
Free delivery on orders over $70
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
18 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
6 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 $70. Orders placed before 2 PM CET usually ship the same day; regulators are assembled and tested first. Fully tracked express delivery: 2–5 business days in the US. 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
Protect your CO2 equipment with the New CO2Art Check Valve!
This clever device permits the flow of CO2 in only one direction. Protecting the CO2 System from water backflow and damage to expensive CO2 equipment such as regulators and solenoids. This innovative check valve is resistant to +100psi high pressure with an incredibly low opening cracking pressure of 1 psi!
The check valve is designed with easy push-in connectors for simple in-line installation. This excellent check valve is compatible with all CO2 resistant tubing provided by CO2Art. Designed for maximum safety and easy use.
NB: please verify that the tubing used is resistant aquarium polyurethane Tubing - 4/6mm as silicon tube will not hold.
Shipping and delivery
Free delivery on orders over $70; otherwise $14.99 in the US and $24.99 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: 2–5 business days in the US. Customs or import duties outside the US are charged on arrival. Shipping & 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