Mansfield Plumbing offers 5 4-inch flush valve toilets models in the lineup we track. This page is the Mansfield Plumbing-specific cut of the broader 4-inch Flush Valve Toilets (Champion 4 et al.) toilets category — same product class, narrowed to the Mansfield Plumbing catalog only.

About Mansfield Plumbing

Mansfield Plumbing (Perrysville, Ohio, founded 1929) is one of the last large vitreous-china toilet manufacturers still casting in the United States. The Alto, Brentwood, Cascade, Pro-Fit, and Plumber's Choice lines are stocked by plumbing-supply houses and Home Depot Pro Desks — favored by tradespeople for repair-grade rebuilds where a 1.6 GPF gravity-flush toilet is needed without the wait time of special-order premium brands.

For the complete Mansfield Plumbing lineup across all sub-types and capacities, see the Mansfield Plumbing Toilets hub.

Mansfield Plumbing 4-inch Flush Valve Toilets (Champion 4 et al.) models we track

Mansfield Alto Two-Piece Elongated 1.28 GPF Comfort Height Toilet (160) — Mansfield Alto — Mansfield's modern WaterSense flagship. Eljer Patriot sister product with more contemporary styling. Made-in-USA at the Mansfield Ohio plant.
Mansfield Pro-Fit 1 Two-Piece Round-Front 1.6 GPF Toilet (003-160) — Mansfield Pro-Fit 1 — the legendary 1.6 GPF commercial-residential workhorse. Heavy-flush legacy for old-drainline replacements where modern 1.28 GPF won't carr...
Mansfield Smart 360 Dual-Flush Two-Piece Elongated 1.28/0.8 GPF Toilet (155) — Mansfield Smart 360 — USA-made dual-flush 1.28/0.8 GPF for utility rebate maximization. SmoothSurface glaze + Mansfield-Eljer warranty terms.
Mansfield Maverick Two-Piece Elongated 1.6 GPF Heavy-Flush Toilet (300) — Mansfield Maverick — heavy-duty 1.6 GPF flush for old-drainline replacement or heavy-use households. MaP 1000g commercial-grade evacuation in residential form f...
Mansfield Brentwood One-Piece Elongated 1.28 GPF Designer Toilet (170) — Mansfield Brentwood — one-piece designer toilet with skirted-trapway styling. USA-made one-piece at sub-$340.

Other 4-inch Flush Valve toilets brands

If you're cross-shopping 4-inch flush valve toilets beyond Mansfield Plumbing, the following brands also ship in this category:

About 4-inch Flush Valve Toilets (Champion 4 et al.) toilets

A 4-inch flush valve is the largest flush valve sold in US residential toilets. The standard residential flush valve is 2-inch or 3-inch; 4-inch is the rare premium specification, found primarily on the American Standard Champion 4 line. The larger valve moves water from the tank to the bowl at much higher velocity than a 2"-3" valve, which means stronger flush performance at the same GPF.

Flush velocity = (tank water volume × valve diameter) / time. A bigger valve = more velocity per gallon of water. For a 1.28 GPF toilet:

2-inch flush valve: flow rate ~30 seconds per gallon
3-inch flush valve: flow rate ~15 seconds per gallon
4-inch flush valve: flow rate ~7 seconds per gallon

The 4-inch valve dumps the entire 1....

For the complete 4-inch flush valve buyer's guide (all brands, full comparison framework), see the 4-inch Flush Valve Toilets (Champion 4 et al.) category hub.

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