Quick Answer: The Straight Adaptor is a polypropylene compression fitting with an external thread that connects 110 mm OD HDPE pipes to 4 inch galvanised iron pipe sockets.
Last updated: October 2026
Key Features
Straight adaptor: compression fitting one end, external thread the other
Connects 110 mm OD HDPE pipe to 4 inch nominal G.I. pipe sockets
Reinforced, UV-stabilised polypropylene
Pressure rating 10 bar at 20 °C; temperature range 0 to 50 °C
For use with drinking water
Technical Specifications
Specification
Value
Type
Straight, compression x external thread
Sizes
110 mm OD x 4 inch nominal
Material
Reinforced polypropylene, UV stabilised
Pressure rating
10 bar at 20 °C
Temperature range
0 to 50 °C
Use
Drinking water
About This Product
Straight adaptors are used on water projects to change from HDPE pipe to existing galvanised iron fittings in a straight run, for instance when extending a GI network with polyethylene pipe.
Frequently Asked Questions
What does the Straight Adaptor connect?
It connects HDPE pipes of 110 mm outside diameter to G.I. pipe sockets of 4 inch nominal diameter.
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