Waterway 6727140 (672-7140) 4-Port Flow-Thru Manifold – 2" Slip x 2" Spigot x (4) 3/4" Ribbed Barbs

The Waterway 6727140 (commonly shown as 672-7140) is a flow-thru plumbing manifold used on many pool and spa systems to distribute water from a main line into multiple smaller lines. It features a 2" slip connection on one end, a 2" spigot connection on the other end, and four 3/4" ribbed barb outlets for hose/tubing connections.

Key Specifications

• Manufacturer: Waterway
• Part Number: 6727140 (672-7140)
• Manifold Type: Flow-thru (inline) distribution manifold
• Main Line Connections: 2" Slip (socket) x 2" Spigot (spg)
• Outlet Ports: (4) 3/4" Ribbed Barb
• Outlet Style: Barb (for flexible tubing/hose with clamps)
• Material: PVC-style molded fitting (spa/pool plumbing)

Common Applications

• Hot tub and spa plumbing where one 2" line feeds multiple 3/4" lines (jets, returns, features, or branch circuits)
• Pool/spa equipment pads where a compact distribution point is needed
• Replacement for cracked or leaking multi-port manifolds in molded plumbing assemblies

What This Manifold Does

• Splits flow from a main 2" line into up to four 3/4" branch lines.
• Maintains a straight-through main path while providing side outlets for distributed plumbing.
• Helps simplify layout and reduce the number of separate tees and fittings.

Fitment & Ordering Notes

• Confirm end style: one end is a 2" slip socket (pipe glues inside), the other end is a 2" spigot (glues into a 2" fitting).
• Confirm outlet size: outlets are 3/4" ribbed barbs intended for flexible tubing/hose with clamps.
• If your system uses a different outlet style (slip ports instead of barbs) or a different main size, choose the correct manifold variant.

When to Replace

• Cracks, splits, or pinhole leaks at the body or barb ports
• Loose or deformed barbs that won’t hold tubing securely
• Persistent seepage after re-clamping and trimming/reseating tubing
• Freeze damage or stress cracks from misaligned plumbing

Installation Notes

• Dry-fit first to confirm orientation and clearance for all four outlets.
• Use the correct PVC primer/cement for the 2" slip and 2" spigot glue joints.
• For 3/4" barb outlets, slide tubing fully to the barb stop (if present) and secure with properly sized hose clamps.
• Avoid over-tightening clamps, which can cut into tubing or crack fittings over time.
• Support plumbing to prevent vibration and pipe stress from loading the manifold.

Related Products (Aqua Pool Supply)

• 3/4" flexible spa hose / tubing
• 3/4" hose clamps (stainless)
• 2" PVC couplings and fittings
• PVC primer and cement
• Spa manifolds and barb fittings

Maintenance Tip

If a barb connection seeps, shut the system down and inspect the tubing end for stretching or splits. Cutting off 1/2"–1" of tubing and reseating it fully on the barb (with a fresh clamp position) often restores a reliable seal—especially on older, heat-softened spa hose.