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White plastic toilet fill valve with adjustable height shaft and water level dials

FLUIDMASTER

FLUIDMASTER 400H-002-P10 PerforMAX Fill Valve 3440

SKU CH-Q27Q-WCY1B

Universal fill valve fits most toilets with adjustable height from 9 in. to 14 in. and quiet, powerful performance for 1.28 and 1.6 GPF models

  • Product type3440
  • Product weight0.8
  • Quietest, most powerful fill valve fixes noisy or slow filling
  • Adjusts from 9 in. to 14 in. to fit more tanks
  • Works with 1.28 and 1.6 GPF toilets and older 3.5 GPF models
  • Anti-siphon, code-approved design protects fresh water supply
  • Pre-installed shank washer and step-by-step guide enable fastest install

Universal Fit and Flush Control

The Fluidmaster PerforMAX 400H-002-P10 is a toilet fill valve designed for 1.28 and 1.6 GPF models while remaining compatible with older 3.5 GPF units. Its universal construction adjusts to work with most toilet brands and tanks. Separate tank and bowl water level dials let you customise the flush performance for each installation.

Quiet Operation and Anti-Siphon Safety

The valve is engineered to fix noisy or slow-filling units with a quiet, powerful fill cycle. A code-approved anti-siphon design prevents contamination of the fresh water supply during operation. The plastic body weighs 0.8 and requires no external power or special plumbing pressure beyond standard household supply.

Complete Kit for Fast Installation

The package includes the fill valve, shank washer, locknut, refill tube and mounting clip so nothing extra is needed for replacement. A pre-installed shank washer and EZ-Twist height adjustment from 9 in. to 14 in. reduce the steps required to fit the valve. Updated pamphlet-style instructions guide the user through the process with clear, sequential steps.

How it compares

Measured against everything we stock in Toilet Bowls & Portable Toilets, at today’s prices. Recalculated every night.

Price $10.99
Cheaper than about 84% of the 47 comparable items (median $26.99).

Specifications

Product
Brand nameFluidmaster
Product type3440

Questions about this item

How do I install the 400H-002-P10 fill valve and which step is most often missed?

Adjust the EZ-Twist body from 9 in. to 14 in. before inserting it, set the tank and bowl dials for 1.28 or 1.6 GPF, then secure the locknut and attach the tube and clip; the step most often missed is pre-setting the height and dials before tightening the locknut.

What maintenance or replacement will the 3440 fill valve need over time?

The plastic valve body and anti-siphon seal are designed for long service; typical maintenance is checking the water level dials annually and replacing the valve only if fill noise or slow fill returns after cleaning the inlet screen.

What limit appears first on the PerforMAX valve during sustained high-volume flushing?

The 1.28 and 1.6 GPF flow-rate calibration caps the refill speed, so the valve reaches its designed fill-rate limit before any pressure or thermal constraint becomes noticeable.

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