---
product_id: 270670174
title: "Thermo Plastic Hose Assembly For LP and Natural Gas, 48 Inch, 3/8 Inch ID - 100383-48, Black"
brand: "flame king"
price: "€ 52.74"
currency: EUR
in_stock: true
url: https://www.desertcart.nl/products/270670174-thermo-plastic-hose-assembly-for-lp-and-natural-gas-48
store_origin: NL
region: Netherlands
---

# 48-inch length for versatile RV fit 350 PSI max pressure rating -40°F to 140°F temperature range Thermo Plastic Hose Assembly For LP and Natural Gas, 48 Inch, 3/8 Inch ID - 100383-48, Black

**Brand:** flame king
**Price:** € 52.74
**Availability:** ✅ In Stock

## Summary

> 🔥 Connect with Confidence — Power Your Adventures Safely!

## Quick Answers

- **What is this?** Thermo Plastic Hose Assembly For LP and Natural Gas, 48 Inch, 3/8 Inch ID - 100383-48, Black by flame king
- **How much does it cost?** € 52.74 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/270670174-thermo-plastic-hose-assembly-for-lp-and-natural-gas-48)

## 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, engineered to handle demanding propane gas systems without compromise.
- • **Certified Safety Assurance:** UL569 certification guarantees compliance and peace of mind for propane use.
- • **Precision Fit for RVs & Trailers:** Seamlessly connects your two-stage regulator to permanent gas piping with a perfect 3/8" ID hose.
- • **Durable Thermo Plastic Construction:** Lightweight yet robust design resists wear and tear, making it the go-to hose for serious RV enthusiasts.
- • **Built to Withstand Extreme Conditions:** Operates reliably from freezing -40°F to scorching 140°F, ensuring safety and performance year-round.

## Overview

The Flame King 48-inch Thermo Plastic Hose Assembly is a UL569-certified, high-pressure (350 PSI) propane hose designed specifically for RVs and travel trailers. Featuring a 3/8" inner diameter and durable thermo plastic construction, it reliably operates in extreme temperatures from -40°F to 140°F, ensuring safe and efficient connection between two-stage regulators and permanent gas piping systems.

## Description

Thermo Plastic Hose Assembly For LP and Natural Gas, 48 Inch, 3/8 Inch ID - 100383-48, Black

## 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 - UL569 use for Propane

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Flame King |
| Brand | Flame King |
| Model | 100383-48 |
| Product Dimensions | 121.92 x 0.76 x 0.25 cm; 249.48 g |
| Item model number | 100383-48 |
| Manufacturer Part Number | 100383-48 |
| Item Weight | 249 g |

## Product Details

- **Brand:** Flame King
- **Material:** Plastic
- **Colour:** Black
- **Product dimensions:** 121.9L x 0.8W centimeters
- **Item weight:** 8.8 Ounces

## Images

![Thermo Plastic Hose Assembly For LP and Natural Gas, 48 Inch, 3/8 Inch ID - 100383-48, Black - Image 1](https://m.media-amazon.com/images/I/61kZpxiIP0L.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

- 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
- Flame King (KT12ACR-2a) 2-Stage Auto Changeover LP Propane Gas Regulator With Two 12 Inch Pigtails For RVs, Vans, Trailers
- Flame King Dual 20LB LP Propane Tank Light Plastic Heavy Duty Cover for RV, Travel Trailer, Camper - Black

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-27*