Flame King MB100383-48 48-Inch LP and Natural Gas Thermoplastic Hose Assembly 3/8" ID MNPT x 1/2" Female Flare

The Flame King MB100383-48 is a 48-inch thermoplastic hose assembly designed for LP and natural gas applications. Commonly used to connect a two-stage regulator to the permanent gas piping system in RVs, travel trailers, and outdoor installations, this hose delivers a reliable, leak-resistant connection in a lightweight and flexible package.

Constructed from durable thermoplastic material, the hose resists cracking, abrasion, and UV exposure while remaining flexible even in cold temperatures. The brass 3/8" MNPT x 1/2" Female Flare Swivel fittings provide a secure, leak-free connection to compatible gas lines and regulators.

Key Features:

• 48" overall length — provides generous reach for regulator-to-piping connections
• 3/8" ID thermoplastic hose with 3/8" MNPT x 1/2" female flare swivel fittings
• 350 PSI maximum pressure rating for high-pressure applications
• Temperature range: -40°F to 140°F (-40°C to 60°C) — performs in extreme weather conditions
• UL569 / CSA / CAN 8.3-1 certified for LP and natural gas use
• Lightweight thermoplastic construction — easier to handle than traditional rubber hoses
• Resistant to cracking, abrasion, and UV exposure
• Limited 1-year warranty

Whether replacing an aging hose in a travel trailer or setting up a new RV gas system, the Flame King MB100383-48 provides a safe, code-compliant solution backed by industry certifications.