Allegro Whistle Nut Assembly W Orifice, 988509C

Allegro Whistle Nut Assembly W Orifice, 988509C

Marsoni

M251S

$112.60

Get it in 3 business days with 1 day shipping. Friday, May 29

Allegro Whistle Nut Assembly W Orifice, 988509CThe Allegro Whistle Nut Assembly with Orifice (model 988509C) is designed as a safety feature for various Allegro respiratory protection systems. This component provides audible alerts to enhance user awareness in industrial environments, particularly where monitoring air supply is critical. Key Features: Audible Warning: The whistle nut produces a loud sound when certain airflow or pressure conditions are detected, alerting users to potential issues

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Pros- lightweight, small, very accurate, easy to clean, timer included. Cons- I use this to brew espresso on my Breville Touch and to get an accurate reading, you have to place something flat (structured) under the scale. Otherwise the reading just jumps all over the place. I know lot of espresso machines have the same base, so this might be an issue for some! This is my reason for 4/5 stars. It’s an easy fix, it’s just kind of annoying. Value for the price seems to be on point. It’s easy to clean. It has a timer as well as scale (nice for espresso). Buttons work the first time you push them. That’s it that’s all

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Reviewed in the United States on January 31, 2026

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Amazon Customer

Phoenix, US

★★★★★ 5

A solid upgrade!

Size: 53mm, Size: 53mm

This coffee tamper has been such a nice upgrade to my espresso routine. It has a solid, balanced weight that makes tamping feel smooth and effortless, and the textured grip gives it a really comfortable, secure feel in hand. There’s something satisfying about how neatly it presses down the coffee grounds—like it was made to fit perfectly. Since I started using it, my shots have been more consistent, with a beautiful crema and better flavor overall. If you’re looking for a tamper that’s simple, well-made, and does its job really well, this one’s definitely worth it.

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Reviewed in the United States on March 22, 2025

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Actual Human

Lowell, US

★★★★★ 5

It's pretty

Size: 51mm

I've never had a tamper, I don't know what I'm doing. But it seems to work just fine and I like the wood.

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Reviewed in the United States on May 15, 2026

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hector lopez

Omaha, US

★★★★★ 5

Nice Upgrade

Size: 58mm

Its a really nice upgrade to my setup. Feels well made and solid build.

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Reviewed in the United States on January 28, 2026

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=CC=

Lowell, US

★★★★★ 4

nice built, simple one-spring design.

Size: 58mm

solid precision built. weight shy of 17oz (478g), aesthetically pleasing. the plunge operation quite smooth. took one star off per its one spring design, you tamp with whatever weight you put on it.

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Reviewed in the United States on February 8, 2026