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DIG - 1/2'' Universal Nut Lock Coupling - 15-055

DIG  |  SKU: 15-055  |  Serving irrigation professionals and DIYers since 1981.
Brand New Factory Sealed DIG Factory Warranty
$157 $182
🚚 Shipped Today if you order now!
Why so “cheap” at CheapSprinklers? Low prices by design — same parts, no compromise

Our prices are lower because of how we run our business — not because the product is different — and we pass those efficiencies directly on to you.

You’re receiving the same brand-new, factory-sealed item sold by big-box, supply-house, or bloated online-warehouse sellers — delivered direct to you, for less.

  • Bulk Purchasing: We buy in high volume to lower per-unit cost
  • Low Overhead: No physical storefronts or unnecessary middlemen
  • Price-First Model: Our business is built around keeping everyday prices as low as possible — so you can put the savings toward other projects or your business.
  • Fast & Efficient Fulfillment: Streamlined US warehouse operations keep costs down and orders moving fast.

The Result: Genuine products with full manufacturer warranty — delivered fast, without paying inflated big-box, supply-house, or bloated online-warehouse markups for the same parts.

CheapSprinklers Product Guarantee How we guarantee authenticity and warranty coverage

All products sold by CheapSprinklers are brand new and factory sealed. This DIG Drip Fitting (15-055) is sourced directly from DIG and ships from us in new-in-box retail packaging.

We’ve been sourcing and supporting irrigation products for professionals and DIYers through both brick-and-mortar and online channels since 1981.

If there’s ever an issue, CheapSprinklers stands behind what we sell and will help coordinate any warranty claim or replacement.

  • Genuine New DIG Drip Fitting: no knockoffs, no refurbished, no old stock
  • Factory Sealed: shipped in original new-in-box retail packaging
  • Current Production Inventory: no discontinued or clearance stock
  • Complete DIG Warranty: full manufacturer coverage begins when your order is delivered

The Result: Peace of mind. You’re installing top-quality equipment — and if there’s ever an issue with this Drip Fitting, you’re fully supported by CheapSprinklers and DIG.

Universal 1/2 in. Nut Lock Fittings

This is the original model of DIG's Universal Nut Lock Fittings. Elbows and Tee's are out of stock on the original but Couplings still in stock.

  • Operating PSI: 60 PSI
  • Fits: .620" OD, .700" OD and .710" OD Tubing (16 mm and 17 mm)
  • Type: Coupling
Features & Benefits

DIG’s Universal Nut Lock™ Drip Fittings are used to connect drip tubing and drip line with dimensions from 1/2” to 5/8” or .620 OD to .710 OD. They can be used to connect two different sizes of drip tubing, providing a simple solution when there is no clear information about the drip tubing or drip line size used.

Used by both home gardeners and professionals, the Universal Nut Lock™ Drip Fittings are made of high-impact plastic for the connection of various sized drip irrigation tubing and drip line. Using a double barb, two pieces of drip line or drip tubing can be connected by inserting the fitting nuts over the drip tubing or drip line, then pushing the drip tubing or drip line over the barbed sides of the fitting, and finally threading the nuts over the drip tubing or drip line for a very tight grip.

Product Details
  • Made of high-impact, high-strength, UV-resistant plastic for extended operation in harsh conditions
  • Fits .620 OD, .700 OD and .710 OD drip tubing, and drip line (16 mm and 17 mm)
  • Three-part construction including a threaded nut, barb assembly, and housing with male thread
  • Threaded nut for easy assembly
  • Resistant to common fertilizers used in residential and commercial applications

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DIG

DIG - 1/2'' Universal Nut Lock Coupling - 15-055

$157 $182
Universal 1/2 in. Nut Lock Fittings

This is the original model of DIG's Universal Nut Lock Fittings. Elbows and Tee's are out of stock on the original but Couplings still in stock.

  • Operating PSI: 60 PSI
  • Fits: .620" OD, .700" OD and .710" OD Tubing (16 mm and 17 mm)
  • Type: Coupling
Features & Benefits

DIG’s Universal Nut Lock™ Drip Fittings are used to connect drip tubing and drip line with dimensions from 1/2” to 5/8” or .620 OD to .710 OD. They can be used to connect two different sizes of drip tubing, providing a simple solution when there is no clear information about the drip tubing or drip line size used.

Used by both home gardeners and professionals, the Universal Nut Lock™ Drip Fittings are made of high-impact plastic for the connection of various sized drip irrigation tubing and drip line. Using a double barb, two pieces of drip line or drip tubing can be connected by inserting the fitting nuts over the drip tubing or drip line, then pushing the drip tubing or drip line over the barbed sides of the fitting, and finally threading the nuts over the drip tubing or drip line for a very tight grip.

Product Details
  • Made of high-impact, high-strength, UV-resistant plastic for extended operation in harsh conditions
  • Fits .620 OD, .700 OD and .710 OD drip tubing, and drip line (16 mm and 17 mm)
  • Three-part construction including a threaded nut, barb assembly, and housing with male thread
  • Threaded nut for easy assembly
  • Resistant to common fertilizers used in residential and commercial applications
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