---
product_id: 23451113
title: "Flame King 48-inch Propane Thermo Plastic Hose Assembly, 3/8-inch ID, 3/8-inch MPT X 1/2-inch Female Flare, for RVs and Travel Trailers"
brand: "flame king"
price: "€ 60.36"
currency: EUR
in_stock: true
url: https://www.desertcart.hr/products/23451113-flame-king-48-inch-propane-thermo-plastic-hose-assembly-3
store_origin: HR
region: Croatia
---

# 48-inch length for versatile RV fit 350 PSI max pressure rating -40°F to 140°F temperature range Flame King 48-inch Propane Thermo Plastic Hose Assembly, 3/8-inch ID, 3/8-inch MPT X 1/2-inch Female Flare, for RVs and Travel Trailers

**Brand:** flame king
**Price:** € 60.36
**Availability:** ✅ In Stock

## Summary

> 🔥 Connect with Confidence: The Ultimate Propane Hose for the Modern Traveler 🚐

## Quick Answers

- **What is this?** Flame King 48-inch Propane Thermo Plastic Hose Assembly, 3/8-inch ID, 3/8-inch MPT X 1/2-inch Female Flare, for RVs and Travel Trailers by flame king
- **How much does it cost?** € 60.36 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/23451113-flame-king-48-inch-propane-thermo-plastic-hose-assembly-3)

## Best For

- flame king enthusiasts

## Why This Product

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

## Key Features

- • **High-Pressure Confidence:** Rated for up to 350 PSI, providing robust durability for your propane needs.
- • **Precision Fit for Your RV:** 48-inch thermo plastic hose designed to seamlessly connect your two-stage regulator to your RV’s gas system.
- • **Certified Safety Assurance:** CSA and UL569/CAN 8.3-1 certified for propane gas, so you can trust every connection.
- • **Built to Withstand Extreme Conditions:** Operates reliably from -40°F to 140°F, ensuring safety and performance in any climate.
- • **Premium Materials, Lightweight Design:** Brass fittings combined with thermo plastic hose deliver strength without the bulk—only 8.8 ounces.

## Overview

The Flame King 48-inch Propane Thermo Plastic Hose Assembly is a durable, CSA and UL certified gas hose designed specifically for RVs and travel trailers. Featuring a 3/8-inch ID with brass fittings, it supports up to 350 PSI and operates safely across a wide temperature range from -40°F to 140°F, ensuring reliable propane delivery in all your adventures.

## Description

Full description not available

## Features

- Size: 48 inches overall Length
- Typically used on RV's and Travel Trailers to connect the Two-Stage Regulator to the permanent gas piping system
- 3/8" ID Thermo Plastic Hose Assembly including a 3/8" MNPT x 1/2" Female Flare Swivel
- Maximum Pressure Rating - 350 PSI; Temperature Range: -40 degrees Fahrenheit to 140 (-40 degrees Celsius to 60 Celsius)
- Certification - CSA and UL569/CAN 8.3-1 for Propane Gas

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Flame King |
| Material | Brass, ThermoPlastic |
| Color | Black |
| Product Dimensions | 48"L x 0.3"W |
| Item Weight | 8.8 Ounces |
| Maximum Pressure | 350 Pound per Square Inch |
| Nominal Wall Thickness | 0.5 inch |
| Item Length | 48 Inches |
| UPC | 899003000854 |
| Manufacturer | Flame King |
| Global Trade Identification Number | 00899003000854 |
| Model | 100383-48 |
| Item Weight | 8.8 ounces |
| Item model number | 100383-48 |
| Manufacturer Part Number | 100383-48 |

## Product Details

- **Brand:** Flame King
- **Material:** Brass, ThermoPlastic
- **Color:** Black
- **Product Dimensions:** 48"L x 0.3"W
- **Item Weight:** 8.8 Ounces
- **Maximum Pressure:** 350 Pound per Square Inch
- **Nominal Wall Thickness:** 0.5 inch
- **Item Length:** 48 Inches
- **UPC:** 899003000854
- **Manufacturer:** Flame King

## Images

![Flame King 48-inch Propane Thermo Plastic Hose Assembly, 3/8-inch ID, 3/8-inch MPT X 1/2-inch Female Flare, for RVs and Travel Trailers - Image 1](https://m.media-amazon.com/images/I/61kZpxiIP0L.jpg)
![Flame King 48-inch Propane Thermo Plastic Hose Assembly, 3/8-inch ID, 3/8-inch MPT X 1/2-inch Female Flare, for RVs and Travel Trailers - Image 2](https://m.media-amazon.com/images/I/71vqP3cPKUL.jpg)
![Flame King 48-inch Propane Thermo Plastic Hose Assembly, 3/8-inch ID, 3/8-inch MPT X 1/2-inch Female Flare, for RVs and Travel Trailers - Image 3](https://m.media-amazon.com/images/I/51KKKX9P3VL.jpg)
![Flame King 48-inch Propane Thermo Plastic Hose Assembly, 3/8-inch ID, 3/8-inch MPT X 1/2-inch Female Flare, for RVs and Travel Trailers - Image 4](https://m.media-amazon.com/images/I/616mQkaZ0lL.jpg)
![Flame King 48-inch Propane Thermo Plastic Hose Assembly, 3/8-inch ID, 3/8-inch MPT X 1/2-inch Female Flare, for RVs and Travel Trailers - Image 5](https://m.media-amazon.com/images/I/711g7uAV2SL.jpg)

## Available Options

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

## Questions & Answers

**Q: Are there threads on the 3/8 female end?**
A: I left a comment above to someone else who said that this product was 3/8” male and female ends. It is not. 
I purchased the product and installed it today. It is 3/8” male NPT on one end, and 1/2” female flared swivel on the other. 
I installed this to complete my upgrade from a single tank to a dual propane system. The 3/8” male NPT threads into the outlet of the new dual regulator, and the 1/2 female flared swivel finished the connection to the main line going into my 2016 Coachmen trailer. 
The 4 foot hose was more than enough. I could have gotten by with 40” to 42”. 
Good product, good price.

**Q: This hose fits the regulator but not my rv. It’s too big. Is there an adapter I could use?**
A: Hi,
There are several adapters to fit different type of connections.
The most common ones are 1/4”, 3/8 and 1/2” NPT and there are a couple of different sizes of regulators.
I have no way to see which one you have or need, I’m sure if you google the RV specs. LP connector, etc. You will find the correct fitment or adapter to your needs.
I wish I could help you more.
Good luck!

**Q: Just to clarify fitting sizes could you screw one end into the other end?**
A: NO.  Thermo Plastic Hose Assembly including a 3/8" MNPT x 1/2" Female Flare Swivel, two different sizes on the ends.

**Q: Will the 1/2” female side fit on 1/2 black pipe**
A: The female side is a flare fitting it won’t fit npt threaded pipe without an adapter from npt to flare

## Frequently Bought Together

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---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-17*