Check valve by Aqua One – Airline Backflow Blocker

Check valve by Aqua One – Airline Backflow Blocker

AQ‑CHK‑VALVE

$4.99
/
Shipping calculated at checkout.
  • Handpicked by growers
  • Ships today
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  • 5,000+ high yielding customers
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  • Free shipping over $499*
  • Low stock - 10 items left
  • Backordered, shipping soon

Pairs well with

One-way ticket for your airflow

Don’t let water sneak where it doesn’t belong - the Check Valve by Aqua One is your grow room’s insurance policy against backflow dramas. Whether you're running air pumps for hydro or a cheeky aquarium setup, this tiny but mighty valve stops water from siphoning back into your gear. Set it up and sleep easy.

🔹 Key Features

🔁 One-way check valve - blocks back-siphoning when pumps sit below waterline

💨 Designed for 4mm airline hose - tight, secure fit with zero fuss

🧩 Compatible with any Aqua One AirPump or standard 4mm air system

🌊 Works across all setups - coldwater, tropical, saltwater… or your hydro bucket

📦 Comes in a handy 2-pack - one for now, one for backup

🛠️ How to Use It

  • Cut your 4mm airline tubing where you want protection.

  • Insert the check valve - make sure the flow direction is correct (arrow side goes away from the pump).

  • Use between air pump and water source, especially if your pump is below the water level.

  • Pair it with Aqua One AirPumps and accessories for full airflow control across multiple devices.

🌟 Grow Guys Tips

  • Always chuck a check valve on if your air pump’s near floor level - one slip-up and your pump could flood.

  • Test airflow direction before final placement - saves you grief later.

  • These are dirt cheap, so don’t skimp. Get a few and stash the extras.

  • Works a treat in hydro reservoirs, DWC buckets, or anywhere you’ve got bubbler stones and air lines.

🧃 Perfect For

  • Hydro growers running air pumps on or below tank level

  • Aquariums of any kind - freshwater, tropical or saltwater

  • DWC systems that need reliable oxygenation

  • Anyone who’s ever mopped up a pump backflow disaster

📦 Specs & Stuff

  • Fits standard 4mm airline tubing

  • Pack size: 2-pack

  • Material: durable plastic housing with directional flow arrow

  • Use with Aqua One pumps or any compatible system

🚀 Stop the backflow before it bites

Tiny part, massive peace of mind. Add it to your cart and keep that airflow moving in the right direction - your pump will thank you.

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Welcome to The Grow Guys

We built The Grow Guys from the soil up — well, coco and perlite. Before we sold gear, we bought it, ran it, and learned the hard way what's worth the money and what ends up in the shed. That's the filter everything on our shelves passes through. No sales scripts, no rebadged junk, no telling you what you want to hear. Just gear we'd run ourselves and advice from people who actually grow. Chasing higher yields, tighter flowers, or your first harvest? You're in the right place.

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FAQs

Order by 2pm and it ships the same business day from Invermay, Tasmania.

Calculated at checkout by weight and destination. Free shipping over $499*.

Plain packaging, no branding. No one knows what's in your box.

30-day change-of-mind returns on unopened, unused products. A 10% restocking fee applies and return shipping is at your cost.

Call, email, or walk into the Invermay shop. You'll get a grower on the other end, not a script.

Unit 10/110 Gleadow Street, Invermay 7248. Mon–Fri 8:30am–5:30pm, Sat 9am–3pm.

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