Required for all permadrip installed underground. Fit the air/vacuum relief valve to the highest point of each drip line to prevent dirt entering the drippers.
Includes 16mm barbed tee on the base.
Keeps drippers clear of dirt on sloping sites by preventing vacuums
From: £12.00 (excl VAT)
From: £14.40 (inc VAT)
Free Economy delivery on orders over £125 + vat
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