What is the difference between the 400H and 400AH?

The 400H is the newer version of the 400AH. The bowl water adjustment on the 400H is integrated into a knob in at the top of the flush valve. On the 400AH, a roller on the refill tube adjusts the bowl water level.

Can i use this to replace a delta toilet fill valvepart RP71188?

The 400H-002 will replace the Delta model. The 400H can adjust to the same height and comes with an adjustable bowl refill knob to control the amount of water going to bowl. With this adjustment you should be able to match both bowl and tank water levels to the original levels. For more information, please contact Fluidmaster’s Technical Service Department, we are available Monday through Friday from 5:30 AM through 5:00 PM Pacific Standard Time. Contact options include Chat www.fluidmaster.com/support E-Mail techsupport@fluidmaster.com and Toll Free 800-631-2011.

Will this work to replace my 300 model on gerber 28-990 1.6gpf?

Yes it will. For any other question feel free to contact Fluidmaster via Chat and E-mail on Fluidmaster com or call our toll free number 800-631-2011 for immediate help. We are available from 5:30 AM to 5:00 PM Pacific Standard Time.

Are these universal or can I replace this on my top flush toilet?

This fill valve is a universal part that will replace most fill valves in use today, including toilets that use a top button to flush. For more information visit our website Fluidmaster.com/support for videos, troubleshooting tips, email, chat with a technician or call toll free 800-631-2011. We are available 5 days a week Mon-Fri from 5:30 am – 5:00 pm PST.

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Fluidmaster 400H Universal Toilet Fill Valve, High Performance, 1-Pack

Product ID: 121048368

Details

Brand
Fluidmaster
Exterior Finish
Plastic
Inlet Connection Size
0.75 inches
Inlet Connection Type
Fill
Item dimensions L x W x H
3.35 x 4.33 x
Material
Plastic Rubber

💧Tank & bowl water level adjust

🔇Quietest operation

⚙️EZ-Twist height 9-14 in.

€ 47.72

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Description

🚽 Upgrade your flush game with the quiet power of Fluidmaster 400H!

PRECISION WATER SAVINGS - Dual tank and bowl water level dials let you customize flush volume and save on water bills.
UNIVERSAL FIT ZERO HASSLE - EZ-Twist adjustable height fits 9 to 14 inches, compatible with most toilet models and brands.
WHISPER QUIET FLUSH CONTROL - Experience the quietest, most powerful fill valve that keeps your bathroom serene.
BUILT TO LAST WITH CONFIDENCE - Backed by a 7-year manufacturer warranty and trusted by thousands with 4.6-star reviews.
FAST FOOLPROOF INSTALLATION - Step-by-step instructions make setup a breeze—get your toilet running perfectly in 15 minutes.

The Fluidmaster 400H Universal Toilet Fill Valve delivers high-performance, whisper-quiet operation with adjustable height (9-14 inches) and customizable tank and bowl water levels. Designed for universal compatibility, it installs easily with included instructions and is backed by a 7-year warranty. Trusted by over 17,000 users, it’s the #1 choice for reliable, water-saving toilet fill control.

Specifications

ASIN	B07N7BH94Q
Best Sellers Rank	#78 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Toilet Flush Valves
Brand	Fluidmaster
Brand Name	Fluidmaster
Customer Reviews	4.6 out of 5 stars 17,501 Reviews
Exterior Finish	Plastic
Included Components	Toilet Fill Valve and Parts
Inlet Connection Size	0.75 inches
Inlet Connection Type	Fill
Item Dimensions	3.35 x 4.33 x 13.19 inches
Item Highlight	Quiet operation, Adjustable tank and bowl water levels, EZ-Twist 9–14 in. height, Fits most toilet brands
Item Type Name	High Performance Tank and Bowl Water Control
Item Weight	9.6 ounces
Item dimensions L x W x H	3.35 x 4.33 x 13.19 inches
Manufacturer	Fluidmaster
Manufacturer Part Number	400H-002-P10
Manufacturer Warranty Description	7 year manufacturer
Material	Plastic, Rubber
Material Type	Plastic, Rubber
Maximum Pressure	80 psi
Model Number	400H-002-P10
Number of Items	1
Number of Packs	1
Number of Pieces	1
Number of Ports	2
Outlet Connection Size	0.75 inches
Outlet Connection Type	Compression
Set Name	Single
Size	1- Pack
Specification Met	code approved, anti-siphon design and water saving bowl water level adjustment
Thread Size	3/8 inch
Thread Type	National Pipe Thread (NPT)
UPC	300716763504 039961025913 300719040572
Unit Count	1 Count
Valve Type	Toilet Fill Valve

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€ 47.72

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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