---
product_id: 287210987
title: "Compound Pressure Gauge -30 inHg to 100 PSI, Liquid Filled, 2.5\" Dial, 1/4 NPT Lower Mount, 304 Stainless Steel Case, Brass Wetted Parts, Dual Scale PSI/inHg - ASME B40.1 Grade A"
brand: "carbo instruments"
price: "133.47 DT"
currency: TND
in_stock: true
reviews_count: 1
category: "Carbo Instruments"
url: https://www.desertcart.tn/products/287210987-compound-pressure-gauge-30-inhg-to-100-psi-liquid-filled
store_origin: TN
region: Tunisia
---

# Liquid-filled for vibration-free stable readings 2.5" large dial for easy reading ASME B40.1 Grade A accuracy ±2-1-2% Compound Pressure Gauge -30 inHg to 100 PSI, Liquid Filled, 2.5" Dial, 1/4 NPT Lower Mount, 304 Stainless Steel Case, Brass Wetted Parts, Dual Scale PSI/inHg - ASME B40.1 Grade A

**Brand:** carbo instruments
**Price:** 133.47 DT
**Availability:** ✅ In Stock

## Summary

> 📊 Gauge Your Success with Precision and Power!

## Quick Answers

- **What is this?** Compound Pressure Gauge -30 inHg to 100 PSI, Liquid Filled, 2.5" Dial, 1/4 NPT Lower Mount, 304 Stainless Steel Case, Brass Wetted Parts, Dual Scale PSI/inHg - ASME B40.1 Grade A by carbo instruments
- **How much does it cost?** 133.47 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/287210987-compound-pressure-gauge-30-inhg-to-100-psi-liquid-filled)

## Best For

- carbo instruments enthusiasts

## Why This Product

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

## Key Features

- • **Dual-Scale Versatility:** Easily switch between PSI and inHg readings on a high-contrast 2.5" dial, perfect for diverse industrial and commercial systems.
- • **Precision You Can Trust:** ASME B40.1 Grade A certified accuracy ensures your measurements are always spot-on, eliminating guesswork in critical applications.
- • **Rugged Industrial Build:** 304 stainless steel case with brass wetted parts offers corrosion resistance and durability for long-lasting performance in harsh environments.
- • **Universal Compatibility:** Standard 1/4" NPT lower mount fits seamlessly with most regulators, tanks, and fittings—ready to integrate into your setup without hassle.
- • **Vibration-Dampening Liquid Fill:** Glycerin-filled gauge stabilizes needle movement, preventing flutter and spikes for crystal-clear pressure readings every time.

## Overview

The CARBO Instruments Compound Pressure Gauge delivers professional-grade accuracy (ASME B40.1 Grade A) with a large 2.5" dual-scale dial for PSI and inHg. Its liquid-filled design ensures stable, vibration-free readings, while the rugged 304 stainless steel case and brass wetted parts guarantee durability in demanding industrial and commercial environments. Featuring a standard 1/4" NPT lower mount, this gauge offers broad compatibility for air, oil, water, gas, and more.

## Description

CARBO Instruments Compound Pressure Gauge -30 inHg to 100 PSI, Liquid Filled, 2.5" Dial, 1/4 NPT Lower Mount, 304 Stainless Steel Case, Brass Wetted Parts, Dual Scale PSI/inHg - ASME B40.1 Grade A: desertcart.com: Industrial & Scientific

Review: Tried the 0-300 psi version, liquid-filled - Felt reasonably solid in hand. Read 5 psi under the readings shown by two other (different brands) gauges. To be fair to Carbo, I only tested it in the 50-85 psi range, using the 0-300 psi gauge. Yes, I was careful to zero the Carbo before every reading.

## Features

- ASME B40.1 Grade A Accuracy (+/-2-1-2%): Professionally manufactured for reliable performance; large 2-1/2" (63mm) dial with high-contrast markings ensures easy pressure reading.
- Liquid Filled for Stable Reading: Glycerin filling stabilizes pointer movement and dampens vibration and pulsation to prevent needle flutter and pressure spikes, ensuring accurate dual-scale PSI/Bar readings.
- Industrial & Commercial Use: Ideal for air, oil, water, and gas systems including pumps, compressors, hydraulic presses, pneumatic equipment, irrigation, HVAC, pool filtration, and general machinery.
- Heavy Duty Construction: Rust-resistant 304 stainless steel case with durable brass wetted parts and copper alloy internals; chrome-plated brass connection and polycarbonate lens for impact resistance.
- Standard 1/4" NPT Lower Connection: Ensures compatibility with most regulators, tanks, manifolds, and fittings. Please verify your connection size before ordering.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08QDQ1BLW |
| Best Sellers Rank | #16,260 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #21 in Industrial Pressure Gauges |
| Brand | CARBO INSTRUMENTS |
| Brand Name | CARBO INSTRUMENTS |
| Customer Reviews | 3.7 out of 5 stars 11 Reviews |
| Item Dimensions | 3.66 x 2.91 x 1.34 inches |
| Item Weight | 0.22 kg |
| Item dimensions L x W x H | 3.66 x 2.91 x 1.34 inches |
| Manufacturer | CARBO USA |
| Material | Brass and Copper alloy Wetted Parts |
| Material Type | Brass and Copper alloy Wetted Parts |
| Model | L25-SSL-V100 |
| Number of Items | 1 |
| Part Number | L25-SSL-V100 |
| Thread Style | 1/4" Npt |
| Thread Type | 1/4" Npt |
| UPC | 810017352791 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** CARBO INSTRUMENTS
- **Item Weight:** 0.22 kg
- **Item dimensions L x W x H:** 3.66 x 2.91 x 1.34 inches
- **Material:** Brass and Copper alloy Wetted Parts
- **Number of Items:** 1

## Images

![Compound Pressure Gauge -30 inHg to 100 PSI, Liquid Filled, 2.5" Dial, 1/4 NPT Lower Mount, 304 Stainless Steel Case, Brass Wetted Parts, Dual Scale PSI/inHg - ASME B40.1 Grade A - Image 1](https://m.media-amazon.com/images/I/71iMwD7a+9L.jpg)
![Compound Pressure Gauge -30 inHg to 100 PSI, Liquid Filled, 2.5" Dial, 1/4 NPT Lower Mount, 304 Stainless Steel Case, Brass Wetted Parts, Dual Scale PSI/inHg - ASME B40.1 Grade A - Image 2](https://m.media-amazon.com/images/I/71XKbvnj38L.jpg)
![Compound Pressure Gauge -30 inHg to 100 PSI, Liquid Filled, 2.5" Dial, 1/4 NPT Lower Mount, 304 Stainless Steel Case, Brass Wetted Parts, Dual Scale PSI/inHg - ASME B40.1 Grade A - Image 3](https://m.media-amazon.com/images/I/71-oZXPMICL.jpg)
![Compound Pressure Gauge -30 inHg to 100 PSI, Liquid Filled, 2.5" Dial, 1/4 NPT Lower Mount, 304 Stainless Steel Case, Brass Wetted Parts, Dual Scale PSI/inHg - ASME B40.1 Grade A - Image 4](https://m.media-amazon.com/images/I/61CvQ4RKQhL.jpg)
![Compound Pressure Gauge -30 inHg to 100 PSI, Liquid Filled, 2.5" Dial, 1/4 NPT Lower Mount, 304 Stainless Steel Case, Brass Wetted Parts, Dual Scale PSI/inHg - ASME B40.1 Grade A - Image 5](https://m.media-amazon.com/images/I/61xr2+egMCL.jpg)

## Available Options

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

## Questions & Answers

**Q: Can this gauge not be filled with any liquid?**
A: There is dry gauge 60 psi, please check the link:
https://www.amazon.com/dp/B07PBXTWRH?ref=myi_title_dp

**Q: hey i want got 10pic of your gauge. i just wonder is that made in china or US？**
A: China

**Q: * Mine had a plastic bezel that fogged white and a steel bezel ring of plated steel that rusted.  Where can I find a quality all stainless gauge?**
A: Here is the link    https://www.amazon.com/dp/B08WPYVBPL?ref=myi_title_dp&th=1

**Q: Where is it made? it mention that "manufacturer : carbo usa". is it means it is made in usa? i hope it is not made in china**
A: Carbon is based in the USA. i am not sure were this gauge is made and my gauge is not stamped on the out side. 
but i can say this i have never replaced a gauge for a failure. 
i have broke a few but i have them on field sprayers for my farm.

## Customer Reviews

### ⭐⭐⭐⭐ Tried the 0-300 psi version, liquid-filled
*by M***R on February 27, 2024*

Felt reasonably solid in hand. Read 5 psi under the readings shown by two other (different brands) gauges. To be fair to Carbo, I only tested it in the 50-85 psi range, using the 0-300 psi gauge. Yes, I was careful to zero the Carbo before every reading.

## Frequently Bought Together

- CARBO Instruments Stainless Steel Pressure Gauge Dual Display (-30/0 / +100 inHg/psi/kPa) - 2 1-2" Glycerine Liquid Filled Water Air Oil Gas Gauge with Polycarbonate Lens - Compound Vacuum -1/4" NPT
- SENCTRL 5000 Psi Glycerin Liquid Filled Hydraulic High Pressure Gauge, 2.5" Dial Size, 1/4" NPT Lower Mount, Stainless Steel Case, for Air Gas Water Oil Pressure Test
- MEASUREMAN 0-100 PSI/kPa Water Pressure Gauge, Glycerin Filled,psi Gauge,for Home Water Pressure Test, 2-1/2’’ Dial, 304 Stainless Steel Case, 1/4’’ NPT Lower Mount

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-09-01*