---
product_id: 216567052
title: "TmallTech 50GPD Flow Restrictor 300CC 1/4\" Quick Connect for RO Reverse Osmosis (pack of 2)"
brand: "digiten"
price: "NT$1102"
currency: TWD
in_stock: true
reviews_count: 5
category: "Digiten"
url: https://www.desertcart.tw/products/216567052-tmalltech-50gpd-flow-restrictor-300cc-1-4-quick-connect-ro
store_origin: TW
region: Taiwan
---

# Precise 300CC flow control 1/4" quick connect ease ABS engineering plastic durability TmallTech 50GPD Flow Restrictor 300CC 1/4" Quick Connect for RO Reverse Osmosis (pack of 2)

**Brand:** digiten
**Price:** NT$1102
**Availability:** ✅ In Stock

## Summary

> 💧 Flow smarter, filter better—upgrade your RO game today!

## Quick Answers

- **What is this?** TmallTech 50GPD Flow Restrictor 300CC 1/4" Quick Connect for RO Reverse Osmosis (pack of 2) by digiten
- **How much does it cost?** NT$1102 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/216567052-tmalltech-50gpd-flow-restrictor-300cc-1-4-quick-connect-ro)

## Best For

- digiten enthusiasts

## Why This Product

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

## Key Features

- • **Durable Engineering:** Crafted from high-grade ABS plastic, built to withstand pressures up to 0.8MPa without compromise.
- • **Value Pack Advantage:** Includes 2 flow restrictors—double the reliability, double the peace of mind for your water filtration needs.
- • **Precision Flow Control:** 300CC flow restrictor ensures optimal water-to-pure ratio (1:3) for peak RO efficiency and taste.
- • **Effortless Installation:** 1/4" quick connect design for seamless, tool-free setup—get your RO system running in seconds.
- • **Universal Compatibility:** Perfect replacement for popular RO systems like Ispring, ensuring hassle-free upgrades and maintenance.

## Overview

The TmallTech 50GPD Flow Restrictor is a precision-engineered ABS plastic component designed for reverse osmosis systems. Featuring a 1/4" quick connect fitting and a 300CC flow rate, it maintains an ideal pure-to-waste water ratio of 1:3 under pressures up to 0.8MPa. Sold in packs of two, it offers easy installation and reliable performance, making it a top choice for efficient water filtration upgrades.

## Description

1/4" Quick connect Flow Restrictor 300CC for RO Reverse Osmosis 50,GPD RO

Review: Used it to replace flow restrictor from Ispring 6 stages RO water filter. Easy to mount, cheap and it's working.
Review: ممتاز

## Features

- Material : ABS engineering plastics
- Working pressure:0-0.8Mpa.
- 1/4" Quick connect.
- Ratio,pure:waster=1:3.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00X6RB75G |
| Best Sellers Rank | 1,085,324 in DIY & Tools ( See Top 100 in DIY & Tools ) 720 in Under-Sink Filters |
| Brand | DIGITEN |
| Colour | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (378) |
| Date First Available | 6 May 2015 |
| Item Weight | 0.28 g |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Model Number | ROCON-74 |
| Product Dimensions | 9.7 x 5.11 x 2.01 cm; 0.28 g |

## Product Details

- **Brand:** DIGITEN
- **Item weight:** 0.01 Ounces
- **Material:** Acrylonitrile Butadiene Styrene (ABS)
- **Product benefits:** Improves filtration efficiency of RO systems
- **Product dimensions:** 5.1D x 9.7W x 2H centimetres

## Images

![TmallTech 50GPD Flow Restrictor 300CC 1/4" Quick Connect for RO Reverse Osmosis (pack of 2) - Image 1](https://m.media-amazon.com/images/I/31+G-s5TleL.jpg)
![TmallTech 50GPD Flow Restrictor 300CC 1/4" Quick Connect for RO Reverse Osmosis (pack of 2) - Image 2](https://m.media-amazon.com/images/I/31YMsQlMsBL.jpg)
![TmallTech 50GPD Flow Restrictor 300CC 1/4" Quick Connect for RO Reverse Osmosis (pack of 2) - Image 3](https://m.media-amazon.com/images/I/31lP0RsOKbL.jpg)
![TmallTech 50GPD Flow Restrictor 300CC 1/4" Quick Connect for RO Reverse Osmosis (pack of 2) - Image 4](https://m.media-amazon.com/images/I/412H1Ggw6KL.jpg)
![TmallTech 50GPD Flow Restrictor 300CC 1/4" Quick Connect for RO Reverse Osmosis (pack of 2) - Image 5](https://m.media-amazon.com/images/I/51l9JK2jr2L.jpg)

## Questions & Answers

**Q: Can this be used in place of a capillary restrictor?**
A: Yes

**Q: On both I can blow into from both sides and air pass through, are both damaged?**
A: Not a direct answer but one of the two I received failed after a few weeks; upon removal I was able to pass air thru both sides.  I did not test the new one (should have), but it seems to be working fine.

**Q: vendor higher CC number means more resistance or less resistance?**
A: Higher number means less flow resistance (higher waste water flow to the drain).

**Q: Does it fit a 1/4” o.d. or i.d. hose?**
A: 1/4" OD

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by G***A on 6 July 2023*

Used it to replace flow restrictor from Ispring 6 stages RO water filter. Easy to mount, cheap and it's working.

### ⭐⭐⭐⭐⭐ Review
*by A***Y on 14 October 2025*

ممتاز

### ⭐⭐⭐⭐⭐ Review
*by A***Z on 23 October 2025*

Cumple con su propósito

## Frequently Bought Together

- DIGITEN 50GPD Flow Restrictor 300CC 1/4" Quick Connect for RO Reverse Osmosis (pack of 2)
- iSpring AAS2 Reverse Osmosis Water Filter Automatic Shut Off Valve Quick Connect, 1 Count (Pack of 1), White
- iSpring Greatwell Reverse Osmosis Membrane 75 GPD 11.75” X 1.75”, Replacement Fits Standard Under Sink RO Drinking Water Filtration System, MC7

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**Shop now:** [https://www.desertcart.tw/products/216567052-tmalltech-50gpd-flow-restrictor-300cc-1-4-quick-connect-ro](https://www.desertcart.tw/products/216567052-tmalltech-50gpd-flow-restrictor-300cc-1-4-quick-connect-ro)

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-01-31*