ISTA 2 in 1 CO2 Bubble Counter + Check Valve

This ISTA 2-in-1 device combines a CO2 bubble counter and spring check valve, with a fastening nut to prevent pipe burst-out.

Features

• With 2 in 1 functions as CO2 bubble counter and check valve.
• CO2 pipe fasten screw nut provided to assure burst out of the CO2 pipe.
• Spring type check valve provides best function in stopping back flow.
• Acrylic material provides clear and easy bubble reading. Acid and breakage endured.
• Easy disassembling of the cap in filling up water.

• 2 functions in 1 product
• Check valve effectively prevents backflow.
• Clear bubble reading provides accurate CO2 dosing.
• Made with acrylic assures long usage time.
• Compact size, easy assembling

How to use

Loose the cap (upper part) and fill up the reservoir with clear water up to 2/3 full. Fasten the cap firmly and secure the CO2 pipe to inlet and out let correctly with the screw nuts.

Cautions

• Loose the CO2 pipe fasten screw nut before disconnecting the CO2 pipe.
• Make sure CO2 inlet and outlet is correctly connected.

The ISTA 2 in 1 CO2 Bubble Counter + Check Valve lets you count CO2 bubbles per second so you can dial in the right injection rate for your tank size — see our guide to CO2 & Bubble Count for target ranges.

Specifications

Functions: CO₂ bubble counter and check valve in one unit

Check valve: spring type

Body: acrylic, for a clear bubble count

Connections: screw-nut pipe clamps on inlet and outlet

Cap: unscrews for filling

Compatibility

Two functions in one body: a bubble counter and a spring check valve. It goes in the CO₂ line between the regulator and the diffuser, on standard CO₂ tubing.

The screw nuts on each port clamp the pipe, so it will not blow off under pressure.

Safety & Precautions

Get the inlet and outlet the right way round. A check valve fitted backwards stops the CO₂ entirely; fitted correctly it is what stops tank water siphoning back into the regulator when the gas shuts off.

Slacken the pipe fastening nut before disconnecting a pipe.

What's in the Box

The combined bubble counter and check valve with its screw cap and pipe clamp nuts. CO₂ tubing is not included.

Returns & Replacement

Returns are accepted within 7 days of delivery, provided the item is unused and in its original packaging. Manufacturer-sealed items cannot be returned once the seal is broken, and sale-priced items are not refundable.

If your item arrives defective or damaged, message us on WhatsApp with your order number — or email us, if you would rather — and we will replace it. Approved replacements are delivered within 3 to 5 business days. Transit damage is covered by insurance on every shipment. If tracking shows delivered but nothing reached you, tell us within 72 hours, which is the reporting window Indian couriers allow. Damage caused during installation or use is not covered; replacement spares for such cases are chargeable.

Full terms are on our Cancellation & Returns page.