Nelsen Lateral, 30" Tanks

A replacement lower distributor lateral sized for 30" diameter mineral tanks. Laterals sit at the bottom of the tank and collect treated water evenly across the full bed while holding the media back.

Key details

• Fits 30" diameter mineral tanks
• Lower distributor lateral
• Draws water evenly across the bed so the media is used across its whole area
• Screens the media so it stays in the tank instead of passing into the plumbing

Where it fits

A service part for large commercial tanks. A cracked or broken lateral is the usual reason media starts escaping into the service line - match the lateral to your tank diameter.

Nelsen Lateral, 30" Tanks. Manufacturer: Nelsen Corp. Part #: D7187.

Nelsen Lateral for 30" Tanks

This Nelsen lateral is an internal distributor component sized for 30 inch tanks, the larger vessels typically used in commercial and high-flow filtration and softening systems. Laterals are the slotted arms that attach to the bottom of the riser tube and fan out across the base of the tank, collecting treated water evenly from throughout the media bed while keeping the media itself contained inside the vessel.

Why the Lateral Matters

Even distribution is the difference between a media bed that works efficiently and one that channels. By drawing water uniformly across the bottom of a large tank, the lateral system helps water contact the full depth and width of the media, and it ensures backwash flow lifts and cleans the whole bed rather than just part of it. A cracked or missing lateral can let media escape into your service lines and cause uneven treatment.

Fitment and Replacement

Laterals thread or snap onto the hub at the base of the riser and are matched to the tank diameter so they reach properly across the floor of the vessel, which is why this one is specified for 30 inch tanks. Replacing damaged laterals is usually done when the tank is open for a media change. Because distributor designs vary, confirming the fit is important. Inspecting the laterals whenever a large tank is open is good practice, since a small crack you catch early prevents media loss and uneven treatment down the road. Water Softener Plus includes guidance with your order and can help you verify that this Nelsen lateral matches your tank and riser assembly before you purchase, so your distributor draws water evenly across the full media bed.