New product for us, and there seems to be a short "flush" every 15 minutes or so. Is this normal? It is round the clock...becoming annoying. adjust?

If it's sounding like a quick and sorry release of water is likely just being a tiny adjustment to the black rubber tube that goes from the fill valve and into the overflow pipe to the right. Make certain the tube isn't too long and kinked as you'll need to get it directly into this pipe that fills with water when your toilet bowl fills. This will remedy that issue.

What does the entire unit measure from top to bottom?

The part of the unit that is supposed to fit inside the water tank is 230 mm + 45 mm thread.The unit is however adjustable, so it can be higher if wanted. I cannot say how high.Oh... it says here on the box: EZ-Twist height adjusts from 9" to 14" to fit most tanks.I hope the information was helpful. Good luck. Jan, Denmark

Will this unit work with a kohler cimarron toilet.

Yes, it's a replacement for the kohler valve specified for the Cimarron toilet.

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🚽 Upgrade your flush game with the world’s #1 fill valve!

PRECISION WATER CONTROL - New dial lets you fine-tune tank water level effortlessly, saving water and money.
WHISPER QUIET PERFORMANCE - Top-rated solution to silence noisy toilets and upgrade your bathroom vibe.
UNIVERSAL FIT ZERO HASSLE - Fits most toilet models with a sleek, easy-install design—no plumber needed.
CERTIFIED QUALITY ASSURANCE - Meets EPA, NSF, UPC, and more—trusted by pros, loved by homeowners.
DURABLE CORROSION RESISTANT - Built with premium plastic materials that stand the test of time and moisture.

The Fluidmaster 400A Anti-Siphon Toilet Tank Fill Valve is a universally compatible, easy-to-install plumbing upgrade that features a 9"-14" adjustable height, anti-siphon technology to prevent contamination, and a pre-installed shank washer for faster setup. Engineered from durable, non-corrosive plastic and certified by multiple industry standards, it’s the go-to solution for quiet, efficient toilet performance.

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Brand	Fluidmaster
Item dimensions L x W x H	30.5 x 7.6 x 31.8 Centimeters
Exterior Finish	Plastic
Inlet Connection Type	Flange
Outlet Connection Type	EZ-twist
Number of Ports	2
Specification Met	EPA, NSF, UPC, IAPMO, UL, ASME, ANSI, MSS
Global Trade Identification Number	00039961000026
Manufacturer	Fluidmaster
Department	Teak
Item model number	100554467
Product Dimensions	30.48 x 7.62 x 31.75 cm; 226.8 g
ASIN	B00002ND6R

Fluidmaster 400A Anti-Siphon Toilet Tank Fill Valve (Black)

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