---
product_id: 316881928
title: "OTC Tools 4278 100 GPM Hydraulic Flow Meter"
brand: "otc"
price: "25.44 OMR"
currency: OMR
in_stock: true
url: https://www.desertcart.com.om/products/316881928-otc-tools-4278-100-gpm-hydraulic-flow-meter
store_origin: OM
region: Oman
---

# ±1% flow accuracy 6000 PSI pressure rating 100 GPM max flow OTC Tools 4278 100 GPM Hydraulic Flow Meter

**Brand:** otc
**Price:** 25.44 OMR
**Availability:** ✅ In Stock

## Summary

> ⚡ Master your hydraulic flow with pinpoint precision and unstoppable reliability!

## Quick Answers

- **What is this?** OTC Tools 4278 100 GPM Hydraulic Flow Meter by otc
- **How much does it cost?** 25.44 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/316881928-otc-tools-4278-100-gpm-hydraulic-flow-meter)

## Best For

- otc enthusiasts

## Why This Product

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

## Key Features

- • **Compact Yet Mighty:** Weighing just 6.35 kg with a sleek 1-inch thickness, this flow meter fits effortlessly into your toolkit without compromising power.
- • **Safety-First Engineering:** Standard burst disc protection prevents costly hydraulic fluid spills, safeguarding your equipment and workspace.
- • **Precision that Powers Performance:** Achieve ultra-accurate flow readings with ±1% flow and ±1.6% pressure accuracy—engineered for flawless hydraulic diagnostics.
- • **Built to Brave the Toughest Conditions:** Operates reliably up to 6000 PSI and 250°F, ensuring durability in the most demanding industrial environments.
- • **Versatile Bi-Directional Flow Measurement:** Seamlessly measures flow in both directions with a robust #16 SAE ORB port, adapting to complex hydraulic systems.

## Overview

The OTC Tools 4278 Hydraulic Flow Meter delivers high-precision flow measurement from 2.5 to 100 GPM with ±1% accuracy, supports pressures up to 6000 PSI, and withstands temperatures up to 250°F. Featuring bi-directional flow capability and built-in burst disc protection, it’s engineered for professional-grade hydraulic diagnostics and safety in demanding industrial settings.

## Description

OTC Tools 4278 100 GPM Hydraulic Flow Meter : desertcart.ae: Automotive

## Features

- Tests hydraulic oil circuits on your machinery with high accuracy and measures flow from 2.5 to 100 gpm
- Flow accuracy to +/- 1 percent of indicated value and pressure accuracy of +/- 1.6 percent of full scale
- Pressure range up to 6,000 psi and temperatures up to 250 deg F
- Standard burst disc protection system prevents spillage of hydraulic fluid in the event of an overpressure condition
- Accommodates bi-directional flow, reads flow in both directions, pressure on the high side of valve and Port is 1-5/16" -12UN #16 SAE ORB

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01A8Q3GQ0 |
| ASIN  | B01A8Q3GQ0 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #138,858 in Automotive ( See Top 100 in Automotive ) #45 in Automotive Pressure & Vacuum Testers |
| Customer Reviews | 5.0 5.0 out of 5 stars (1) |
| Customer reviews | 5.0 5.0 out of 5 stars (1) |
| Date First Available | 1 January 2024 |
| Date First Available  | 1 January 2024 |
| Included components | Hydraulic Flow Meter - 100 gpm |
| Item Package Quantity | 1 |
| Item Weight | 6.35 Kilograms |
| Item model number | 4278 |
| Item model number  | 4278 |
| Item thickness | 1 Inches |
| Manufacturer | OTC Tools |
| Manufacturer  | OTC Tools |
| Number Of Pieces | 1 |
| Part number | 4278 |
| Product Dimensions | 24 x 19.99 x 19.76 cm; 6.35 kg |
| Product Dimensions  | 24 x 19.99 x 19.76 cm; 6.35 kg |
| Voltage | 9 Volts |

## Images

![OTC Tools 4278 100 GPM Hydraulic Flow Meter - Image 1](https://m.media-amazon.com/images/I/81RGjT0cEHL.jpg)
![OTC Tools 4278 100 GPM Hydraulic Flow Meter - Image 2](https://m.media-amazon.com/images/I/81h5tWDGttL.jpg)
![OTC Tools 4278 100 GPM Hydraulic Flow Meter - Image 3](https://m.media-amazon.com/images/I/914wnYZ6cmL.jpg)
![OTC Tools 4278 100 GPM Hydraulic Flow Meter - Image 4](https://m.media-amazon.com/images/I/916xPvR6KpL.jpg)
![OTC Tools 4278 100 GPM Hydraulic Flow Meter - Image 5](https://m.media-amazon.com/images/I/917xRem7NLL.jpg)

## Frequently Bought Together

- OTC Tools 4278 100 GPM Hydraulic Flow Meter
- Lisle 37960 Electrical Disconnect Pliers
- Lisle 70500 Tap Socket Set

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**Shop now:** [https://www.desertcart.com.om/products/316881928-otc-tools-4278-100-gpm-hydraulic-flow-meter](https://www.desertcart.com.om/products/316881928-otc-tools-4278-100-gpm-hydraulic-flow-meter)

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-02-22*