---
product_id: 177456638
title: "Ralston QTHA-3TB0 3/8\" Tube Fitting x Male Quick-Test Adapter, Brass"
brand: "ralston instruments"
price: "€ 75.93"
currency: EUR
in_stock: true
url: https://www.desertcart.hr/products/177456638-ralston-qtha-3tb0-3-8-tube-fitting-x-male-quick
store_origin: HR
region: Croatia
---

# Integrated locking mechanism Wrench-free quick connect Gas-tight O-ring seal Ralston QTHA-3TB0 3/8" Tube Fitting x Male Quick-Test Adapter, Brass

**Brand:** ralston instruments
**Price:** € 75.93
**Availability:** ✅ In Stock

## Summary

> 🔧 Connect faster, test smarter—never miss a beat!

## Quick Answers

- **What is this?** Ralston QTHA-3TB0 3/8" Tube Fitting x Male Quick-Test Adapter, Brass by ralston instruments
- **How much does it cost?** € 75.93 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/177456638-ralston-qtha-3tb0-3-8-tube-fitting-x-male-quick)

## Best For

- ralston instruments enthusiasts

## Why This Product

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

## Key Features

- • **Universal Compatibility:** Seamlessly fits Parker, Swagelok, Tylok, SSP, and more for versatile use.
- • **Industry-Ready Durability:** Brass construction built for Oil & Gas, Petrochemical, Semiconductor, and Process Instrumentation.
- • **Leak-Proof Seal Technology:** Integrated O-ring ensures a gas-tight connection without extra tightening.
- • **Effortless Wrench-Free Connection:** Save valuable time with hand-tight installation—no tools needed.
- • **Maximum Grip, Minimal Tube Stress:** Locking mechanism secures fittings without deforming tubes.

## Overview

The Ralston QTHA-3TB0 is a 3/8" brass tube fitting adapter designed for quick, wrench-free, gas-tight connections compatible with major tube fitting brands. Its integrated O-ring seal and locking mechanism ensure leak-proof, secure connections ideal for demanding applications in Oil & Gas, Petrochemical, Semiconductor, and Process Instrumentation industries.

## Description

The Ralston QTHA-3TB0 3/8" Tube Fitting x Male Quick-test Adapter provides a gas-tight, wrench-free connection to any type of tube fitting, including Parker, Swagelok, Tylok, and SSP. Its leak-free seal helps save time and improve the overall efficiency of the process it is being used for.||Applications||The tube fitting adapter can be used in a range of applications, including gas sampling, pressure calibration, pressure reading, and testing. The industries it covers are Oil & Gas, Research, Petrochemical, Semiconductor Industries, Process Instrumentation, and Power.||Save Time with Ralston Tube Fitting Quick-test Adapters||The Ralston tube fitting adapter is easy and quick to connect. Simply remove the tube ferrules and nuts, and connect the adapter. When the connector is positioned on the connection, it creates gas-tight sealing without the need of a wrench. Tightening with your hands is enough to have a strong connection. The Tube Fitting Quick Test Adapter helps save time in hydrostatic testing, pressure calibration or pressure safety valve setting.

## Features

- Provides gas-tight connection to any type of tube fitting, including Parker, Swagelok, Tylok, and SSP
- Easy to connect, tighten and disconnect without a wrench
- Seal uses integrated O-ring that doesn't require additional tightening
- Integrated locking mechanism ensures maximum grip with minimal deformation of tube adapter

## Product Details

- **Material:** Brass
- **Brand:** Ralston Instruments
- **Color:** Brass
- **Connector Type:** Adapter
- **Exterior Finish:** Brass
- **Thread Type:** NPT
- **Number of Pieces:** 1
- **Manufacturer:** Ralston Instruments

## Images

![Ralston QTHA-3TB0 3/8" Tube Fitting x Male Quick-Test Adapter, Brass - Image 1](https://m.media-amazon.com/images/I/418u92vAHxL.jpg)

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**Shop now:** [https://www.desertcart.hr/products/177456638-ralston-qtha-3tb0-3-8-tube-fitting-x-male-quick](https://www.desertcart.hr/products/177456638-ralston-qtha-3tb0-3-8-tube-fitting-x-male-quick)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-22*