Hydro Flow Barbed Straight 3/4 in Connector (Single) | 4-Barb Irrigation Fitting

Hydro Flow Barbed Straight 3/4 in Connector for Main Lines

Main feed lines and pump runs often need extending, splicing or repairing as a grow room changes. This Hydro Flow Premium fitting, Hawthorne part number HGC708445, joins two lengths of 3/4 inch tubing end to end. It is a straight coupler with a barbed end on each side. Its four-barb design bites into the tubing wall for a tight fit. A raised bump stop sits at the center of the body. When the tubing reaches that stop, the fitting is fully and securely inserted. That keeps both sides seated evenly, with no guessing. The 3/4 inch size suits main feed lines, pump outlets and reservoir returns. Growers also use it to add length to a header or to rejoin a line after cutting in a tee. The body is molded in black plastic. Matching elbows, tees and a ball valve come from the same Hydro Flow barbed line. Each listing here is a single fitting.

Joining Lines With a Barbed Hose Connector

Cut both tubing ends square with a sharp tubing cutter or a fine-tooth saw for heavier walls. A clean, square cut seals better than a ragged or angled one. Push one end over the barbs until it meets the bump stop. Repeat on the other side, so both runs sit snug against the center. Heavier tubing slides on more easily after a minute or two in warm water. Avoid oils or soap as a lubricant, because they can let the tubing creep off later. Pump discharge lines carry real pressure, so add a hose clamp over each joint there. Gravity returns usually hold fine on the barbs alone. Support long, full runs near the joint, since water in larger tubing is heavy. Check every new joint for drips during the first run. Keep a couple of spares on hand for quick repairs.

Key Features

• Four-Barb Design: Barbs grip 3/4 inch tubing for a tight, secure fit.
• Bump Stop: A center stop shows when the tubing is fully inserted.
• Straight Coupler: Joins two runs end to end, extends headers and splices repairs.
• Main Line Size: Fits the larger feed, pump and return lines in a grow room.
• Single Fitting: One connector for a quick repair or a small build.

Technical Specifications