One-Way Retention Valve, Brass 3/8-1/8

Name: One-Way Retention Valve, Brass 3/8-1/8
Brand: Expobar
SKU: 11850
Price: 46.08 USD
Availability: InStock
Rating: 4.8 (4 reviews)

One-Way Retention Valve, Brass 3/8-1/8 - Main image

One-Way Retention Valve, Brass 3/8-1/8 - View 2

$46.08 ~~$72~~ In stock

Category: Part

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This One-Way Retention Valve from Expobar is a replacement part designed to help maintain proper flow direction in espresso equipment. Made from brass, it offers durable service in a compact fitting size.

Genuine Expobar-brand replacement part
Brass construction for reliable performance
One-way valve design

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Customer Reviews (4.8 / 5 · 4 reviews)

Hazel O. ★★★★★ Oct 26, 2026

The brass construction feels solid and heavy, exactly what I needed for a secure seal in my espresso machine. Installed it in minutes and it stopped the backflow issue I was having. A simple, well-made part that does its job without fuss.

Natalie H. ★★★★★ Oct 25, 2026

The 3/8-1/8 sizing fit perfectly in my espresso machine's plumbing. This brass valve feels substantial and the internal mechanism engages with a satisfying click.

Christopher ★★★★★ Oct 24, 2026

Installed this brass valve to fix a backflow issue on my espresso machine and it fit the 3/8-1/8 ports perfectly. The solid brass build feels much sturdier than the plastic original I replaced.