---
product_id: 3603918
title: "NEIKO 30252A Water and Oil Separator for Air Line | 1/4\" NPT Inlet and Outlet | 90 PSI | Air Compressor and Air Tool Accessory | Protect Lifespan of Pneumatic Tools | Water Moisture Filter Dryer"
brand: "neiko"
price: "757030₫"
currency: VND
in_stock: true
reviews_count: 13
category: "Neiko"
url: https://www.desertcart.vn/products/3603918-neiko-30252a-water-and-oil-separator-for-air-line-1
store_origin: VN
region: Vietnam
---

# 90 PSI max pressure 1/4" NPT universal inlet/outlet Transparent design for easy monitoring NEIKO 30252A Water and Oil Separator for Air Line | 1/4" NPT Inlet and Outlet | 90 PSI | Air Compressor and Air Tool Accessory | Protect Lifespan of Pneumatic Tools | Water Moisture Filter Dryer

**Brand:** neiko
**Price:** 757030₫
**Availability:** ✅ In Stock

## Summary

> 💨 Keep your air tools dry, clean, and unstoppable!

## Quick Answers

- **What is this?** NEIKO 30252A Water and Oil Separator for Air Line | 1/4" NPT Inlet and Outlet | 90 PSI | Air Compressor and Air Tool Accessory | Protect Lifespan of Pneumatic Tools | Water Moisture Filter Dryer by neiko
- **How much does it cost?** 757030₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/3603918-neiko-30252a-water-and-oil-separator-for-air-line-1)

## Best For

- neiko enthusiasts

## Why This Product

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

## Key Features

- • **Durable & Lightweight:** Rugged aluminum and brass construction built to withstand daily shop demands without weighing you down.
- • **Seamless Compatibility:** Fits any standard 1/4" NPT air hose for effortless integration into your existing setup.
- • **Real-Time Condition Check:** Clear housing lets you visually track trapped moisture and particles—no guesswork needed.
- • **Ultimate Moisture & Oil Defense:** Protect your pneumatic tools from costly water and oil damage with precision filtration.
- • **Maximize Tool Lifespan & Performance:** Maintain peak air output and extend your air tools’ life, saving you hundreds in replacements.

## Overview

The NEIKO 30252A Water and Oil Separator is a lightweight, durable air compressor accessory designed to filter out water, oil, and dust from compressed air at up to 90 PSI. Featuring universal 1/4" NPT fittings and a transparent housing for easy monitoring, it ensures cleaner air delivery to pneumatic tools, enhancing their performance and longevity while saving costly repairs.

## Description

[WATER SEPARATOR]: An essential air tool accessory for mechanics and craftsmen that stops water and particles from entering air spray guns and other air compressor tools to keep your equipment in top performing shape. [OIL SEPARATOR]: This air filter unit separates the oil from the air as the oil needs to stay inside the compressor to keep it lubricated while the compressed air needs to exit the compressor free of oil to ensure maximum air output to your air tools and increase reliability and lifespan. [MAXIMIZE PERFORMANCE]: The water oil separator traps water vapor and dust to maximize the performance of air compressor tools for cleaner and more even jobs providing excellence in execution and saving you countless dollars in replacing expensive air tool equipment. [TRANSPARENT DESIGN]: The clear build of this tool allows you to monitor the buildup and the amount of water and dust particles that this filter has trapped. [SPECIFICATIONS]: Each unit comes with a 1/4â NPT inlet and outlet for any standard air hose with that size fitting and can handle pressure to 90 PSI. The Neiko 30252A Water and Oil Separator features a universal 1/4-inch NPT inlet and outlet and is made to be compatible for air tools and spray guns. The separator has a maximum air pressure of 90 psi and serves as the gate keeper between your compressor and air tools. By filtering the water and oil and trapping it inside of the self-contained unit, the 30252A will ensure longevity in your tool collection and help you maintain air tools that perform at an optimal level every time. A must-have for tool enthusiasts, this inexpensive air tool accessory can save you hundreds and even thousands of dollars in replacement tools. Â Â

Review: Servicable. - Worked great for my set-up spraying latex paint for small jobs using standard compressor used for nailer. Filter is serviceable so water trapped can be removed and dried out between jobs. Would not recommend for high humidity climates without pre-filter, would work fine for post filter application IMO.
Review: Solid Build - I bought this air filter/liquid seperator for use on my CO2 laser so that I could use my shop air compressor for "Air assist". I found it to work quite well. It is not big or heavy and it appears to be well built/sturdy. I attached it to the end of my reel hose right before it attaches to my laser cabinet. I live in a fairly dry climate so there is'nt a lot of moisture build up to begin with but the filtering seems to be good.

## Features

- WATER SEPARATOR: Add this air-tool accessory to your shop or garage to stop moisture, water, oil, and particles from entering air-spray guns and air-compressor tools. You can also add it to your compressor hose to keep the equipment working efficiently.
- OIL SEPARATOR: This spray-gun unit separates the oil from the air as it goes through your air hose. The oil stays inside the compressor to keep it lubricated while the compressed air stays free of oil, ensuring maximum air output to your air tools.
- OPTIMIZE PERFORMANCE: Available in 90 PSI or 150 PSI versions, this oil-water separator traps water vapor and dust to maximize performance for cleaner and more even jobs, saving you countless dollars in replacing expensive air tools.
- EASY TO SEE: This air-compressor in-line dryer has a clear build that allows you to easily monitor buildup and the amount of trapped water and dust particles. It also has a convenient quick-release valve to remove anything trapped inside.
- SPECIFICATIONS: The air-compressor moisture filter comes with a 1/4-inch NPT inlet and outlet and will fit any standard air hose with a 1/4-inch fitting. The durable aluminum housing with brass fittings will withstand rugged everyday use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002GQ3SUA |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #31,582 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #60 in Air-Compressor Accessories |
| Brand | NEIKO |
| Color | Transparent |
| Customer Reviews | 4.5 4.5 out of 5 stars (5,678) |
| Date First Available | May 23, 2008 |
| Global Trade Identification Number | 00837013302520 |
| Included Components | 1/4" NPT Water and Oil Separator |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 3.52 ounces |
| Item dimensions L x W x H | 6.8 x 5.1 x 2 inches |
| Item model number | 30252A |
| Manufacturer | Ridgerock Tools Inc. |
| Maximum Power | 0.13 Horsepower |
| Part Number | 30252A |
| Power Source | Air Powered |
| Product Dimensions | 6.8 x 5.1 x 2 inches |
| Recommended Uses For Product | Spraying |
| Size | 90 PSI |
| Special Feature | Lightweight |
| Special Features | Lightweight |
| Style | Oil/Water Separator - 90psi |
| UPC | 837013302520 |
| Voltage | 100 Volts |

## Product Details

- **Brand:** NEIKO
- **Color:** Transparent
- **Power Source:** Air Powered
- **Recommended Uses For Product:** Spraying
- **Voltage:** 100 Volts

## Images

![NEIKO 30252A Water and Oil Separator for Air Line | 1/4" NPT Inlet and Outlet | 90 PSI | Air Compressor and Air Tool Accessory | Protect Lifespan of Pneumatic Tools | Water Moisture Filter Dryer - Image 1](https://m.media-amazon.com/images/I/71+Il6eMhML.jpg)

## Questions & Answers

**Q: OK just got this thing, no markings for flow directions and two conflicting answers for inlet and outlet.  which is correct?**
A: I see where the confusion is.  The fittings seem to be on backwards.  At least for my rig.  Not to mention it's backwards in one of the promo pix.  Way to go Neiko!  Here's how I'm fixing mine.  
Female quick disconnect is fixed on my compressor,
male quick disconnect ----->  1/4" FNPT ($6 for two)
filter (the shiny drain valve should point back to the compressor, not the tool)
*** Ideally the last piece would be a 1/4" FNPT to 1/8" BSPT (but I can't find one)
1/4" MNPT to 1/4" MNPT ($7.80 for four)
1/4" FNPT to 1/8" BSPT (running an airbrush, so I have to reduce down to this quirky size)

**Q: I have a supply air line hanging from the ceiling and I connect to the bottom of it. Which way would the filter be hanging for best performance?**
A: yes the valve should be at the bottom ! These filters appear to work both ways @! i have several and there don't appear to be any restriction on air flow either way i hook it up ! It should be fine both ways ! Might want to try it and see if it affects air flow for you ?I really don't care for it in the line and rather use it mounted on my paint gun ! I use the throw away ones for painting and this style for air tools with them mounted to the tool itself !

**Q: Can I put this after the regulator or will that drop pressure too much?**
A: I recommend the bottom of you gun if possible. It is made to allow free flow. The pressure may drop a fraction of a pound. Not enough for anything... it pretty much just filters the moisture so you don't have water spots out your gun as you spray. I used it in line for an airbrush but would recommend an iwata if you are using it for that application

**Q: Why are the reviews and questions for this model  (30253A) the same as for model 30252A?  There is clearly an error.**
A: Check the manufacturer's specifications.  It might be small dimension changes that do not affect the ability of the unit, i.e. length, diameter, etc.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Servicable.
*by P***N on February 12, 2025*

Worked great for my set-up spraying latex paint for small jobs using standard compressor used for nailer. Filter is serviceable so water trapped can be removed and dried out between jobs. Would not recommend for high humidity climates without pre-filter, would work fine for post filter application IMO.

### ⭐⭐⭐⭐⭐ Solid Build
*by E***. on August 19, 2024*

I bought this air filter/liquid seperator for use on my CO2 laser so that I could use my shop air compressor for "Air assist". I found it to work quite well. It is not big or heavy and it appears to be well built/sturdy. I attached it to the end of my reel hose right before it attaches to my laser cabinet. I live in a fairly dry climate so there is'nt a lot of moisture build up to begin with but the filtering seems to be good.

### ⭐⭐⭐⭐ Good quality, but way too restrictive for HVLP automotive painting.
*by P***D on January 22, 2017*

Well, kind of a mixed review. The product worked great for capturing water and is very inexpensive for the quality. However, it is quite restrictive and won't allow nearly enough air flow for my HVLP 1.4 and 1.8 guns. It worked fine with the small 1.0 touch-up gun. But the larger guns use a LOT of air, as much as 10 CFM (estimate) with a wide spray pattern. I even tried two of these filter in parallel and still not nearly enough air flow. Next I tried a Harbor Freight Separator. No luck, still very restrictive (and it sprang a leak almost immediately). Even a good sized separator listed on Amazon only flows 7 SCFM according to it's manufacturer, and they recommend an even larger one for automotive spray painting. You can get by with a small filter, but your paint job will suffer.

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-08*