---
product_id: 6198521
title: "ARO R37121-600-VS Air Regulator 1/4\" NPT, w/Gauge - 250 psi Max Inlet"
brand: "ingersoll rand"
price: "€ 61.81"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.it/products/6198521-aro-r37121-600-vs-air-regulator-1-4-npt-w
store_origin: IT
region: Italy
---

# 0-140 PSI pressure range 59 CFM max flow rate 1/4" NPT precision fit ARO R37121-600-VS Air Regulator 1/4" NPT, w/Gauge - 250 psi Max Inlet

**Brand:** ingersoll rand
**Price:** € 61.81
**Availability:** ✅ In Stock

## Summary

> ⚡ Regulate with precision, perform with power!

## Quick Answers

- **What is this?** ARO R37121-600-VS Air Regulator 1/4" NPT, w/Gauge - 250 psi Max Inlet by ingersoll rand
- **How much does it cost?** € 61.81 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/6198521-aro-r37121-600-vs-air-regulator-1-4-npt-w)

## Best For

- ingersoll rand enthusiasts

## Why This Product

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

## Key Features

- • **High Flow Capacity:** Supports up to 59 CFM, perfect for demanding industrial applications.
- • **Precision Pressure Control:** Maintain optimal air pressure with a 0-140 PSI range for flawless performance.
- • **Robust 1/4" NPT Connection:** Ensures a secure, leak-free fit for professional-grade reliability.
- • **Durable & Lightweight Design:** Compact 7.5 x 3.2 x 2.8 inch build weighing just 5.6 oz for easy installation and longevity.
- • **Integrated Flush-Mount Gauge:** Instantly monitor pressure levels with a sleek, easy-to-read gauge.

## Overview

The ARO R37121-600-VS Air Regulator by Ingersoll Rand offers precise air pressure control with a 0-140 PSI range, a flush-mount gauge for real-time monitoring, and a robust 1/4" NPT connection. Designed for high flow applications up to 59 CFM, this lightweight and durable regulator ensures reliable performance in professional settings, backed by a 2-year limited warranty.

## Description

ARO R37121-600-VS Air Regulator 1/4" NPT, w/Gauge - 250 psi Max Inlet

## Features

- HAWA
- 1/4-Inch NPT
- 0-140 PSI Pressure Range
- Flush-mount gauge
- Relieving - standard knob control
- 59 CFM

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Ingersoll Rand |
| Material | Air Line Regulator |
| Item dimensions L x W x H | 7.5 x 3.2 x 2.8 inches |
| Item Weight | 0.35 Pounds |
| UPC | 663023080086 785479951649 |
| Global Trade Identification Number | 00663023080086 |
| Manufacturer | Ingersoll Rand |
| Part Number | R37121-600-VS |
| Item Weight | 5.6 ounces |
| Product Dimensions | 7.5 x 3.2 x 2.8 inches |
| Item model number | R37121-600-VS |
| Size | 1/4" NPT |
| Color | Black |
| Style | Air Line Regulator |
| Power Source | Corded Electric |
| Installation Method | Packaged |
| Item Package Quantity | 1 |
| Maximum Pressure | 150 |
| Measurement Accuracy | +/-0.7% |
| Usage | Regulate air pressure |
| Included Components | Air Regulator |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | 2 Year Limited Warranty |

## Product Details

- **Brand:** Ingersoll Rand
- **Material:** Air Line Regulator
- **Item dimensions L x W x H:** 7.5 x 3.2 x 2.8 inches
- **Item Weight:** 0.35 Pounds
- **UPC:** 663023080086 785479951649

## Images

![ARO R37121-600-VS Air Regulator 1/4" NPT, w/Gauge - 250 psi Max Inlet - Image 1](https://m.media-amazon.com/images/I/91uQ5n2j27L.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ First rate design and construction
*by A***L on June 7, 2012*

This may well be the best regulator I've seen. If I have one complaint, it's that the gauge seems small. That's no surprise, though. It's integrated into the regulator, and the whole block is rather small. Even so, it's a small complaint. Everything is well-marked and legible, and I am most impressed with everything else about it.I use a 30-gallon, oil-lubricated automotive compressor to run an airbrush. This is probably overkill, but for 5 minutes of noise, I get 2-3 hours of quiet work time. Unfortunately, my compressor has been eating regulators at the rate of one a year, though the last one only lasted 2 months. They work fine at 40 lbs, and may even work well at higher pressures. But sooner or later, when I run the pressure up to 80 or 90 lbs to fill a tire, the thing fails. As you may know, a regulator usually costs $20 to $60. It's a bother.The regulators I've bought at the Big Box stores seem really cheap. Their performance has been lackluster with several pounds of pressure loss when I actually start spraying. I've had replacement regulators fail right out of the package, too. Not good! With respect to most of the actual failures, I've since learned that it is extremely important to raise and lower the pressure slowly - more slowly than I've been doing it. Raising and lowering the pressure too quickly puts undue stress on the springs and seals. But the pressure and quality issues are still a bother, and I still needed a new regulator. So, I chose this one because I-R is a respected brand, this looked well-made, and the price was right.I'm happy to report that this is an outstanding piece of hardware, and apparently bargain priced. Other sites want $40 to $50 for the same unit. First, this has a very handsome, modular design. Second, all the parts seem well-made and fit together nicely. To adjust the inner range band, you do need to carefully remove the front housing, It snaps off and reveals the gauge assembly. Then, you move the yellow arrows as desired to set your pressure range. You pop the housing back into place and all is good. If you want the pressure knob on top, you remove the housing, remove a couple screws, carefully turn the gauge assembly 180 degrees, replace the screws, and replace the housing. Done!Once installed, I found the regulator has very little pressure drift - maybe a pound or two. Very Happy! Visiting the I-R site, I found that the company recommends putting a dirt & water filter between the air source and the regulator. No stock consumer compressor I've seen has this, and I've noticed buildup of contaminants in a couple of my worn regulators. So, this seems prudent and I will soon install a good filter unit to better protect my regulator.I recommend this as a very good, bargain-priced replacement regulator. I expect this to perform better and last longer than any other regulator I've tried. I will try to post updates over time. Thanks for reading.

### ⭐⭐⭐⭐⭐ Good performance and easily configurable for all orientations.
*by D***M on September 9, 2015*

I like this because of:1. Performance. In particular ability to deliver volume with less pressure drop than the 4 other regulators I tested. With the tank pressure set at 100PSI, I observed the output pressure drop as it delivered air to an air blower with the regulator set at 80 and then 60. The pressure drop with this relatively high flow was between 1/3 and 1/2 that of four other regulators I had available. One on a Porter Cable compressor, one on a Rolair compressor, a cheapo Harbor Freight unit, and another one I had lying around of unknown origin. I couldn't find published curves for this regulator (or any other small regulator for that matter), but it seems much better than the others I have.2. Configurability. It's a handy feature to be able to configure it any way round. The gauge comes off and can be attached on either side, either way up, so left to right flow, or right to left flow with the knob top or bottom are all possible.3. Build quality. Seems good.

### ⭐⭐⭐⭐ Good minimalist air regulator.
*by M***Y on January 22, 2014*

I needed a regulator for my compressor as the old one was damaged.I quick review found this regulator with decent ratings.So, it works fine.Some issues you should be aware of-1- It has a very small pressure gauge included. It works fine but, is difficult to read.I bought an external larger faced gauge that I can read more easily.2- The air in and out ports were in the opposite direction from what I needed. Some reviews said it is easy to reverse, I did not try-Instead I installed it upside down. It works fine.3- It is fine for my home shop but, for heavy commercial use I would not recommend this regulator.Go for a high volume regulator- maybe with an air dryer / water separator inline.So, I recommend this for home use and light industrial use.

## Frequently Bought Together

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-05-11*