All parts such as elbows, tubing, housings and valves should have a manufacturer’s mark such as JG (for John Guest) stamped into the moulds used during the production process. In this way, the company and country of origin are clearly indicated. Stickers are no longer a guarantee of a genuine quality part as these can easily be printed and used unethically.
We use genuine John Guest fittings with moulding of authenticity.
Below are examples of genuine fittings with manufacturer marks:
(Computer-generated imagery, actual product colour & installation may vary slightly)