---
product_id: 11113976
title: "Yellow Jacket 49138 3-1/8\" Blue Compound, 30\", 0-350 psi, R-22/404A/410A Gauge Degrees F"
brand: "yellow jacket"
price: "HK$501"
currency: HKD
in_stock: true
reviews_count: 10
category: "Yellow Jacket"
url: https://www.desertcart.hk/products/11113976-yellow-jacket-49138-3-1-8-blue-compound-30-0
store_origin: HK
region: Hong Kong
---

# 3-1/8" large gauge for precise readings Color-coded blue for easy refrigerant ID 1% calibration accuracy for trusted data Yellow Jacket 49138 3-1/8" Blue Compound, 30", 0-350 psi, R-22/404A/410A Gauge Degrees F

**Brand:** yellow jacket
**Price:** HK$501
**Availability:** ✅ In Stock

## Summary

> 🔧 Stay Cool, Measure Smarter: The Pro’s Choice for Precision Pressure!

## Quick Answers

- **What is this?** Yellow Jacket 49138 3-1/8" Blue Compound, 30", 0-350 psi, R-22/404A/410A Gauge Degrees F by yellow jacket
- **How much does it cost?** HK$501 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/11113976-yellow-jacket-49138-3-1-8-blue-compound-30-0)

## Best For

- yellow jacket enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Durable brass gauge movement and copper alloy bourdon tube deliver long-term reliability on every job.
- • **Compact Powerhouse:** Lightweight 7 oz design with 1/8" NPT male connection fits seamlessly into your toolkit without bulk.
- • **Precision Meets Clarity:** Large 3-1/8" dial with high-visibility color-coded scales ensures you never miss a critical reading.
- • **Universal Compatibility:** Color-coded for R-22, R-404A, and R-410A refrigerants—streamline your workflow with one trusted tool.
- • **Engineered for Stability:** Brass surge protector and flutter-less tech minimize needle pulsation for rock-solid measurements.

## Overview

The Yellow Jacket 49138 is a professional-grade 3-1/8" blue compound gauge calibrated to 1% accuracy, designed for R-22, R-404A, and R-410A refrigerants. Featuring a durable brass construction, flutter-less technology, and a clear polycarbonate crystal, it delivers precise, stable readings in a compact, lightweight form factor ideal for HVAC professionals.

## Description

Large 3-1/8 inch gauges are housed in a red or blue steel case with front recalibrates screw. High visibility colored temperature scales are easy to read through the full view polycarbonate crystal. Flutter less technology with brass surge protector to minimize needle pulsation, brass gauge movement. Copper alloy bourdon tube, color-coded refrigerant types.

Review: Good purchase - Really good quality
Review: Nice - Nice

## Features

- Color coded blue for compound
- Calibrated to 1% accuracy
- 1/8" NPT male connection
- Item Package Dimension: 2.0" L x 2.0" W x 2.0" H

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00159TFU6 |
| Best Sellers Rank | #74,096 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #134 in Industrial Pressure Gauges |
| Brand | Yellow Jacket |
| Date First Available | February 22, 2008 |
| Global Trade Identification Number | 00686800491387 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 7 ounces |
| Item dimensions L x W x H | 6.6 x 4.6 x 1.1 inches |
| Item model number | 49138 |
| Manufacturer | Fotronic Corporation |
| Material | Brass |
| Product Dimensions | 6.6 x 4.6 x 1.1 inches |
| Thread Type | Npt |
| UPC | 686800491387 |

## Product Details

- **Brand:** Yellow Jacket
- **Item dimensions L x W x H:** 6.6 x 4.6 x 1.1 inches
- **Material:** Brass
- **Thread Type:** Npt
- **UPC:** 686800491387

## Images

![Yellow Jacket 49138 3-1/8" Blue Compound, 30", 0-350 psi, R-22/404A/410A Gauge Degrees F - Image 1](https://m.media-amazon.com/images/I/91A2tu61BNL.jpg)

## Questions & Answers

**Q: Is the full scale 500 psi (as pictured) or 350 psi (as in description)?**
A: *30", 0-350 psi - retard protection to 500 psi

**Q: Will this gauge fit on my 42006 series 41 manifold? I got the wrong gauges (r22, 134a, and 404a) and I need the 410a.**
A: I see no reason why it shouldn't fit...threads should be the same...but you will need to be able to hook it up to your AC system and those end connectors may be your problem...make sure you have the proper end fittings that you need for your system. I have multiple gauges for mine that I can interchange.

**Q: Hi i need a low side and high side for: R134A,507 and 404?**
A: You need a gauge, gauge and hoses?

**Q: Will this work for R134?**
A: I'm a 20yr tech. It will work for any refrigerant really... it just doesn't give the saturation temp of R134a.  But it will give pressures which is the main purpose of gauges.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good purchase
*by P***R on July 12, 2025*

Really good quality

### ⭐⭐⭐⭐⭐ Nice
*by E***L on December 25, 2025*

Nice

### ⭐⭐⭐⭐⭐ Does the job
*by W***A on July 17, 2025*

Great to use with adapter instead of carrying bulky gauges just to check pressures

## Frequently Bought Together

- Yellow Jacket 49138 3-1/8" Blue Compound, 30", 0-350 psi, R-22/404A/410A Gauge Degrees F
- Yellow Jacket 49137 3-1/8" Red Pressure, 0-800 psi, R-22/404A/410A Gauge Degrees F
- Yellow Jacket 19110 Ritchie Quick Coupler

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-31*