Fluidmaster 400A Brass Shank Universal Toilet Fill Valve Review

Our Review Approach

In this review, we evaluate the Fluidmaster 400A Brass Shank Universal Toilet Fill Valve as a toilet flush valves decision for readers of Big Home Improvements. The goal is practical: separate usable hub specs from packaging language so you can decide quickly.

At harvest, ProductHub showed availability as In Stock with a price snapshot near $17.78. Rank context: #13 in Toilet Flush Valves.

Feature language from the listing (rewritten in the hero bullets, preserved here for context) includes points such as: Easy turn tank water level adjustment dial for water savings; Easy to install, pre-installed shank washer to save time.

Who It Is For

This style of plumbing suits shoppers who already know they need toilet flush valves coverage and want a Fluidmaster option with transparent listing details.

It is a weaker match if you need a fully custom install, a different capacity class, or a feature the hub row simply does not list.

Specs That Matter

The specs table mirrors hub labels and values. Highlights include Brand: Fluidmaster; Model: 400A-019-P4; Color: Black; Size: No Size; Dimensions: 2.95 x 2.95 x 12.55 inches.

Because Big Home Improvements pages are meant to help you choose — not to invent capacity — any dimensions, weights, ranges, or pack counts in this article are copied from hub features/specs rather than guessed.

Translated into daily use, the standout listing claims still revolve around: Easy turn tank water level adjustment dial for water savings.

Trade-Offs and Limits

Trade-offs are normal in toilet flush valves. A design that wins on portability may give up enclosed storage; a long wireless claim may assume open line-of-sight; a high load rating usually assumes even distribution.

Our Storage Pick badge is editorial shorthand for “worth considering in this category,” not a guarantee for every floor plan, campsite, or property layout.

How It Compares

Against generic no-name alternatives, Fluidmaster listings often win on clearer packaging and easier returns through Amazon — still read the live seller and fulfillment line.

Against premium ecosystems, this unit may look simpler. That can be a feature if you want fewer apps and more straightforward hardware.

Who Should Buy It

Buy the Fluidmaster 400A Brass Shank Universal Toilet Fill Valve if the hub numbers and feature set line up with your toilet flush valves job. Skip it if you need a capability the listing does not document.

Next step: use the buy box for the live Amazon offer (tag bighomeimprovements-20), then confirm price and stock before checkout.

Deeper Context

Availability text such as “In Stock” is a harvest-time signal. Treat Amazon’s live cart state as authoritative on the day you buy.

Price snapshots help with ballpark budgeting, but promotions, coupons, and seller changes can move the number quickly after the hub as_of timestamp.

On the spec sheet, Dimensions is listed as 2.95 x 2.95 x 12.55 inches, which is the kind of concrete detail that should drive a buy/skip call.

On the spec sheet, Size is listed as No Size, which is the kind of concrete detail that should drive a buy/skip call.

When we compare toilet flush valves options, we start with footprint, install friction, and whether the listed capacities match a realistic home or field setup rather than a brochure photo.

On the spec sheet, Warranty is listed as 7 year limited, which is the kind of concrete detail that should drive a buy/skip call.

Category context matters: a strong toilet flush valves pick for one household layout can be the wrong shape for another. Use the specs table as the tie-breaker.

On the spec sheet, Brand is listed as Fluidmaster, which is the kind of concrete detail that should drive a buy/skip call.

We also watch for missing details. If the hub row does not list a measurement, we do not invent one — that keeps the review honest even when the Amazon title is long.

On the spec sheet, Weight is listed as 0.77 pounds, which is the kind of concrete detail that should drive a buy/skip call.

On the spec sheet, In the box is listed as 1, which is the kind of concrete detail that should drive a buy/skip call.

Because this review is anchored to ProductHub facts for Fluidmaster, we keep invented dimensions out of the copy and only repeat numbers that already appear in features or specs.

Further Detail

One listing point worth translating into plain language: Easy turn tank water level adjustment dial for water savings.

Availability text such as “In Stock” is a harvest-time signal. Treat Amazon’s live cart state as authoritative on the day you buy.

Because this review is anchored to ProductHub facts for Fluidmaster, we keep invented dimensions out of the copy and only repeat numbers that already appear in features or specs.

If a feature reads like marketing emphasis, we still preserve its numeric claims when present, then explain what those numbers mean for storage, camping, or security workflows.

Shoppers often bounce between similar ASINs that differ mainly by color or pack size; our import pipeline dedupes those variants so the review you are reading represents the stronger sales-rank snapshot.

Price snapshots help with ballpark budgeting, but promotions, coupons, and seller changes can move the number quickly after the hub as_of timestamp.

Further Detail

On the spec sheet, Warranty is listed as 7 year limited, which is the kind of concrete detail that should drive a buy/skip call.

Shoppers often bounce between similar ASINs that differ mainly by color or pack size; our import pipeline dedupes those variants so the review you are reading represents the stronger sales-rank snapshot.

Because this review is anchored to ProductHub facts for Fluidmaster, we keep invented dimensions out of the copy and only repeat numbers that already appear in features or specs.

One listing point worth translating into plain language: Easy to install, pre-installed shank washer to save time.

When we compare toilet flush valves options, we start with footprint, install friction, and whether the listed capacities match a realistic home or field setup rather than a brochure photo.

On the spec sheet, Dimensions is listed as 2.95 x 2.95 x 12.55 inches, which is the kind of concrete detail that should drive a buy/skip call.