---
product_id: 503651462
title: "Blue Viega ManaBloc Stems (3 pack of 50602 's)"
brand: "viega"
price: "$234"
currency: NZD
in_stock: true
reviews_count: 6
category: "Viega"
url: https://www.desertcart.nz/products/503651462-blue-viega-manabloc-stems-3-pack-of-50602-s
store_origin: NZ
region: New Zealand
---

# 360° stem rotation Reduced flow noise Made in USA quality Blue Viega ManaBloc Stems (3 pack of 50602 's)

**Brand:** viega
**Price:** $234
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade your ManaBloc with the toughest stems in town!

## Quick Answers

- **What is this?** Blue Viega ManaBloc Stems (3 pack of 50602 's) by viega
- **How much does it cost?** $234 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/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

- • **Smooth Operation:** 360-degree stem rotation with reliable ¼ turn on/off control
- • **Easy Installation:** Clear instructions included to get your system back in action fast
- • **OEM Precision Fit:** Guaranteed original Viega quality for seamless replacement
- • **Noise-Reduced Flow:** Engineered to minimize flow noise for a quieter plumbing system
- • **Enhanced Durability:** Larger diamond pin design resists breakage under pressure

## Overview

This 3-pack of Blue Viega ManaBloc Stems (model 50602) offers a direct OEM replacement for older ManaBloc systems, featuring a redesigned larger diamond pin for enhanced durability and a smooth 360-degree rotation with ¼ turn on/off control. Made in the USA, these stems reduce flow noise and come with clear installation instructions, ensuring a reliable and quiet plumbing repair solution.

## 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: 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.
Review: Worked great, easy to replace. - Worked great on my mana block system manufactured in 1999/2000 to replace broken stems that I could not turn off.

## 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 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #255,494 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #7,838 in Pipe Fittings |
| Brand | Viega |
| Color | Black,Blue |
| Customer Reviews | 4.5 4.5 out of 5 stars (16) |
| Date First Available | October 1, 2022 |
| Global Trade Identification Number | 30691514506044 |
| Included Components | 3 each Blue 50602 stems. This 3 pack uses the mfg number of 50604 |
| Item Weight | 0.634 ounces |
| Item dimensions L x W x H | 6 x 1.5 x 1 inches |
| Item model number | 50604 |
| Manufacturer | Viega |
| Material | Diamond |
| Number of Pieces | 3 |
| Part Number | 50604 |
| Product Dimensions | 6 x 1.5 x 1 inches |
| Size | Small |
| Thread Type | NPT |

## 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/71963Pt7UhL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ Worked great, easy to replace.
*by A***R on March 31, 2025*

Worked great on my mana block system manufactured in 1999/2000 to replace broken stems that I could not turn off.

### ⭐⭐⭐⭐⭐ 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 New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-19*