---
product_id: 503651462
title: "Blue Viega ManaBloc Stems (3 pack of 50602 's)"
brand: "viega"
price: "¥21877"
currency: JPY
in_stock: true
reviews_count: 7
category: "Viega"
url: https://www.desertcart.jp/products/503651462-blue-viega-manabloc-stems-3-pack-of-50602-s
store_origin: JP
region: Japan
---

# Reduced flow noise OEM precision fit Blue color-coded for easy ID Blue Viega ManaBloc Stems (3 pack of 50602 's)

**Brand:** viega
**Price:** ¥21877
**Availability:** ✅ In Stock

## Summary

> 🔵 Upgrade your ManaBloc with precision and peace of mind!

## Quick Answers

- **What is this?** Blue Viega ManaBloc Stems (3 pack of 50602 's) by viega
- **How much does it cost?** ¥21877 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/503651462-blue-viega-manabloc-stems-3-pack-of-50602-s)

## Best For

- viega enthusiasts

## Why This Product

- Trusted viega brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Made in the USA:** Proudly manufactured domestically ensuring top-tier quality and reliability
- • **Easy Installation:** Clear, visual instructions included to get your system back in action fast
- • **Noise-Reduced Flow:** Innovative design minimizes flow noise for a quieter plumbing system
- • **Seamless Compatibility:** Direct replacement for older black, red, or blue ManaBloc stems with 360° rotation
- • **Engineered for Durability:** Upgraded diamond pin design resists breakage for long-lasting performance

## Overview

The Blue Viega ManaBloc Stems (3-pack) are OEM replacement parts designed to fit older ManaBloc systems, featuring a reinforced diamond pin to prevent breakage and reduce flow noise. Made in the USA, these stems offer a smooth ¼ turn operation with full 360° rotation compatibility, ensuring reliable, quiet performance and easy installation with included instructions.

## Description

Replacement stems for older Manabloc systems that originally had black stems. The older black stems with a smaller diamond pin are no longer manufactured. There was trouble with the black diamond pin breaking off so they redesigned the stem, changing them to red or blue color and increasing the size of the diamond pin to resist breaking. If your existing ManaBloc stems are black, red, or blue and turn 360 degrees this is the correct product for your system. Stem turns ¼ turn to off or on, but will turn 360 degrees around. This newer stem uses the red T-handle (50601) which has a larger diamond slot.

Review: Wrong Package Label - These are listed as Viega 5602. They are actually 5604. They universally replace 5602s. I just used them on an old Viega/Vanguard MANABLOC manifold. Package labeling is wrong.
Review: Original Quality and Fit - The work and fit as they should. I don't particularly like Manabloc but the house came with it. If you got hard water, buy extras cause even with a water softener, every time you turn these things they leak. Its like if you turn it, replace it. Put a bit extra silicone grease when you install them to "help" with future service.

## Features

- Original OEM product.
- Made in the USA
- Reduced flow noise
- Installation instructions are shown in this listing's pictures

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BHGPTCYK |
| Best Sellers Rank | #312,611 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #9,714 in Pipe Fittings |
| Brand Name | Viega |
| Color | Black,Blue |
| Customer Reviews | 4.5 4.5 out of 5 stars (17) |
| Global Trade Identification Number | 30691514506044 |
| Included Components | 3 each Blue 50602 stems. This 3 pack uses the mfg number of 50604 |
| Item Dimensions | 6 x 1.5 x 1 inches |
| Item Type Name | Blue Viega ManaBloc Stems (3 Pack of 50602 s) |
| Manufacturer | Viega |
| Material Type | Diamond |
| Model Number | 50604 |
| Number of Pieces | 3 |
| Size | Small |
| Thread Type | NPT |
| Unit Count | 3.0 Count |

## Product Details

- **Brand:** Viega
- **Color:** Black,Blue
- **Global Trade Identification Number:** 30691514506044
- **Item dimensions L x W x H:** 6 x 1.5 x 1 inches
- **Manufacturer:** Viega
- **Material:** Diamond
- **Number of Pieces:** 3
- **Size:** Small
- **Thread Type:** NPT

## Images

![Blue Viega ManaBloc Stems (3 pack of 50602 's) - Image 1](https://m.media-amazon.com/images/I/61A-0DM1sSL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Wrong Package Label
*by P***Z on February 20, 2026*

These are listed as Viega 5602. They are actually 5604. They universally replace 5602s. I just used them on an old Viega/Vanguard MANABLOC manifold. Package labeling is wrong.

### ⭐⭐⭐⭐⭐ Original Quality and Fit
*by C***C on June 22, 2025*

The work and fit as they should. I don't particularly like Manabloc but the house came with it. If you got hard water, buy extras cause even with a water softener, every time you turn these things they leak. Its like if you turn it, replace it. Put a bit extra silicone grease when you install them to "help" with future service.

### ⭐⭐⭐⭐⭐ Perfect fit
*by A***R on November 21, 2024*

I recently installed the Blue Viega ManaBloc Stems in my plumbing system, and I couldn’t be more pleased with the results. The installation process was a breeze. Each stem fit perfectly into the manifold, allowing for a seamless connection that felt secure and reliable. Overall, I highly recommend Blue Viega ManaBloc Stems to anyone looking to upgrade their plumbing system. They are a perfect fit for the manifold, easy to install, and built to last. This product truly exemplifies quality craftsmanship and functionality. If you want reliable stems that perform well, look no further!

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-25*