Product Overview
The HOME-FLEX 18-445-005 is a straight transition fitting that connects a 1/2-inch IPS underground polyethylene fuel-gas line to a 1/2-inch steel male pipe thread connection. One end consists of a plain yellow poly tail for joining to the buried system through a compatible HOME-FLEX Underground coupling or another approved method. The opposite end provides an epoxy-coated steel MIP connection for transition to permitted metal gas piping.
HOME-FLEX lists this fitting at approximately 16 inches overall, including about 12 inches of poly pipe and a 4-inch steel section. It is part of the direct-burial Underground system for natural gas and propane and belongs to the ASTM F1973 transition-fitting family. The current IPEX cross-reference for this size is product code 251032, while the existing Big Frog Supply SKU remains 18-445-005. The manufacturer specifies a maximum working pressure of 80 PSI and maximum working temperature of 140°F. Location, burial, support, corrosion protection, tracer wire, threaded connection method, pressure testing, and inspection must follow current manufacturer instructions, system design documents, and local requirements. Confirm both the 1/2-inch IPS poly size and 1/2-inch MIP thread before ordering.
Key Features:
- Transitions 1/2-inch IPS poly gas pipe to 1/2-inch steel MIP
- Approximately 16 inches overall
- Plain poly tail for connection with a compatible underground coupling
- Epoxy-coated steel threaded section
- For natural-gas and propane underground systems
- ASTM F1973 product family
Common Uses:
- Transitioning buried yellow poly pipe to approved metal gas piping
- Connecting an underground branch to a permitted threaded system component
- Completing a poly-to-metal change in a professionally designed fuel-gas system
Technical Specifications:
- Shopify SKU / legacy VPC number: 18-445-005
- Current IPEX product code: 251032
- Product type: Straight underground poly-to-steel transition
- Poly connection: 1/2-inch IPS, DR 9.3
- Metal connection: 1/2-inch steel MIP
- Approximate overall length: 16 inches
- Approximate steel section: 4 inches
- Approximate poly section: 12 inches
- Maximum working pressure: 80 PSI
- Maximum working temperature: 140°F
- Fuel compatibility: Natural gas and propane
- Standard: ASTM F1973
Important Installation Note:
Fuel-gas piping work must be performed by qualified personnel as required by the authority having jurisdiction. The plain poly tail requires a compatible underground connection, while the steel MIP connection requires the approved threaded sealing and support method for the project. Do not expose yellow poly pipe above grade or use this product inside or beneath a building.
FAQ
Does this fitting connect directly to the underground pipe?
The plain poly tail requires a compatible HOME-FLEX Underground coupling or another approved joining method.
What is the threaded size?
The steel end has a 1/2-inch male pipe thread.
How long is the fitting?
HOME-FLEX lists it at approximately 16 inches overall, with about 4 inches of steel and 12 inches of poly pipe.
Can it be used above grade as yellow poly pipe?
No. Yellow polyethylene gas pipe must remain at or below the required burial level.
Why Buy the HOME-FLEX 18-445-005 From Big Frog Supply?
Big Frog Supply identifies the exact poly and MIP sizes, legacy SKU, current IPEX code, approximate section lengths, operating limits, standard, and manufacturer resources so buyers can confirm the transition before ordering.
