---
product_id: 285536050
title: "Downstream Injector for Pressure Washer, Power Washer Chemical Injector Kit, Soap Injector, 3/8 Inch Quick Connect, 4000 PSI"
brand: "raincovo"
price: "€ 62.63"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.fi/products/285536050-downstream-injector-for-pressure-washer-power-washer-chemical-injector-kit
store_origin: FI
region: Finland
---

# Adjustable soap-to-water ratio 3/8 inch quick connect 4000 PSI max pressure Downstream Injector for Pressure Washer, Power Washer Chemical Injector Kit, Soap Injector, 3/8 Inch Quick Connect, 4000 PSI

**Brand:** raincovo
**Price:** € 62.63
**Availability:** ✅ In Stock

## Summary

> 💦 Elevate your clean game with precision and power!

## Quick Answers

- **What is this?** Downstream Injector for Pressure Washer, Power Washer Chemical Injector Kit, Soap Injector, 3/8 Inch Quick Connect, 4000 PSI by raincovo
- **How much does it cost?** € 62.63 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/285536050-downstream-injector-for-pressure-washer-power-washer-chemical-injector-kit)

## Best For

- raincovo enthusiasts

## Why This Product

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

## Key Features

- • **Universal Quick Connect:** 3/8 inch quick connect fits most electric and gas pressure washers for seamless setup.
- • **Durable Premium Materials:** Brass and stainless steel components ensure long-lasting corrosion resistance and reliability.
- • **Precision Dilution Control:** Metering valve lets you dial in the perfect soap-to-water mix for every job.
- • **Versatile Temperature Range:** High-quality PVC siphon hose handles hot or cold water from 32°F to 122°F without fail.
- • **Pump-Safe Chemical Injection:** Protect your pressure washer pump by keeping harsh chemicals out of the system.

## Overview

The Raincovo Downstream Injector Kit is a robust chemical injector designed for pressure washers up to 4000 PSI. Featuring a 3/8 inch quick connect, adjustable metering valve, and durable brass and stainless steel construction, it safely injects detergents without damaging your pump. The included 10-foot PVC siphon hose supports hot and cold water use, making it a versatile and essential upgrade for professional-grade cleaning efficiency.

## Description

Downstream Injector for Pressure Washer, Power Washer Chemical Injector Kit, Soap Injector, 3/8 Inch Quick Connect, 4000 PSI

## Features

- Package: Kit Includes chemical injector, 10 feet siphon hose, filter, black nozzle soap with 1/4” quick connect and teflon tape.
- Application: When detergent is sucked out separately, the chemical will not pass through the pump, you could use a variety of chemicals without damaging the pump.
- Characteristic: Chemical injector kit with a metering valve, which can adjust dilution ratio of soap and water. Avoid clogging of the injector and improve the efficiency of pressure washer.
- Connector: Downstream Injector has 3/8 inch quick connect. Fits most electric and gas power washer. It's connected between the pressure washer pump and the pressure washer hose.
- Material: Siphon hose is made of high-quality PVC, used for hot and cold water (32°F to 122°F). Adapter is made of brass and stainless steel. Max pressure is 4000 PSI. Flow rate is 2 to 5 GPM.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Brass, Polyvinyl Chloride |
| Brand | Raincovo |
| Item dimensions L x W x H | 6.1 x 6.1 x 2.2 inches |
| Exterior Finish | Stainless Steel, Brass |
| Inlet Connection Size | 0.38 Inches |
| Inlet Connection Type | Barb |
| Outlet Connection Type | Quick Connector |
| Maximum Operating Pressure | 4000 Pound per Square Inch |
| Number of Ports | 2 |
| Outlet Connection Size | 0.38 Inches |
| Valve Type | Globe Valve |
| Manufacturer | Raincovo |
| UPC | 762048490426 788422954988 |
| Item Weight | 1.12 pounds |
| Product Dimensions | 6.1 x 6.1 x 2.2 inches |
| Country of Origin | China |
| Item model number | ROF8W58 |
| Power Source | gasoline-powered |
| Item Package Quantity | 1 |
| Batteries Required? | No |

## Product Details

- **Material:** Brass, Polyvinyl Chloride
- **Brand:** Raincovo
- **Item dimensions L x W x H:** 6.1 x 6.1 x 2.2 inches
- **Exterior Finish:** Stainless Steel, Brass
- **Inlet Connection Size:** 0.38 Inches
- **Inlet Connection Type:** Barb
- **Outlet Connection Type:** Quick Connector
- **Maximum Operating Pressure:** 4000 Pound per Square Inch
- **Number of Ports:** 2
- **Outlet Connection Size:** 0.38 Inches

## Images

![Downstream Injector for Pressure Washer, Power Washer Chemical Injector Kit, Soap Injector, 3/8 Inch Quick Connect, 4000 PSI - Image 1](https://m.media-amazon.com/images/I/717D5w1V5PL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy and effective chemical injector
*by H***N on April 23, 2025*

This chemical injector was incredibly easy to integrate into my pressure washing setup. The quick connectors made it a breeze to install inline between the pressure washer output and the high-pressure hose. It effectively siphoned bleach directly from the jug, making my cleaning tasks much simpler.While the product description mentioned adjustability, the instructions didn't elaborate on how to change the siphoning ratio. The bottom portion of the siphon valve spins, which I assume is the adjustment mechanism, but I didn't personally test different ratios.The brass construction is typical for pressure washer accessories, giving me confidence in its long-term durability. Following use, I made sure to flush it with water and then applied some WD-40 after it dried to ensure smooth operation after storage.Considering its low price and how effectively it siphoned the bleach, I found this chemical injector to be a great value. The packaging was standard, but I appreciated the inclusion of Teflon tape, which helped ensure a leak-free connection.

### ⭐ Placement matters
*by G***A on June 2, 2025*

It works , but it doesn’t. Since no detailed instructions were provided I installed in a manner making it convenient for my use; using quick connectors after the pump & before the hose. It would not draw up solution through siphon hose. Direction of flow arrow was confirmed, no blockages or vacuum leaks.Moved injector to other end, after hose and before wand, works like a champ. Solution was drawn up immediately, with great flow. Seems like location of install is everything. The problem with this is the solution bucket then needs to be moved with the wand, not located at the pressure washer. Reinstalled in original configuration to confirm and again no flow of solution.So it will work, but not for me. I don’t want to drag around a solution bucket in 1 hand & run the wand with the other.

### ⭐⭐⭐⭐⭐ Works great!
*by M***D on May 25, 2025*

Works great! Will not draw chemical if you have 90 degree connector on end of wand. Learned that the hard way!

## Frequently Bought Together

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-10*