18-Way Steel Air Manifold — Commercial Airstone Splitter

18-Way Steel Air Manifold — Commercial-Scale Airstone Splitter

A commercial-scale 18-way stainless steel manifold — enables multiple simultaneous airstone applications from a single air pump. Each outlet has its own hand-operated on/off tap, so you can balance airflow across outlets or shut off unused lines. Rust-free stainless steel construction means reliable long-term service in humid grow-room conditions.

Why growers choose the 18-way manifold:

• 18 individually-controlled outlets — split one air pump across serious multi-bucket setups
• Individual tap per outlet — balance airflow per airstone, shut off unused lines
• Stainless steel construction — eliminates rust, proper durability in humid grow rooms
• Long service life — high-grade construction means years of reliable use
• Simultaneous applications — run many DWC buckets or aeration zones from one pump
• Robust build — handles commercial-grade air pumps without fatigue
• Fits standard 6mm airline — universal air-system compatibility

Who it's not for:

For smaller setups (2-8 airstones), a 4-way or 8-way manifold is cheaper and adequate — don't buy 18-way for a single DWC. Check your air pump's total output can supply 18 airstones adequately — undersized pumps leave downstream airstones starved. For ultra-large commercial setups (25+ airstones), dedicated commercial air manifolds may be needed alongside.

In stock now — ships same working day from our Staffordshire warehouse with free UK delivery over £100. Pick up in-store at our Stone shop (ST15 0SR) if you're local, or click & collect at checkout.