Frequently Asked Questions
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The John Guest Speedfit 12mm Female to 1/2" BSPP Male Adaptor is designed to connect 12mm John Guest Speedfit or Whale semi-rigid pipe to a 1/2" BSPP (British Standard Pipe Parallel) female threaded fitting. It is ideal for fresh water plumbing systems in caravans, motorhomes, campervans, boats and horseboxes.
Installation is quick and straightforward. Simply push the 12mm semi-rigid pipe fully into the Speedfit connection and screw the 1/2" BSPP male thread into the compatible female fitting. The push-fit connection creates a secure, leak-resistant seal without the need for tools, solvent or sealants.
Manufactured from durable, corrosion-resistant acetal, this genuine John Guest fitting incorporates stainless steel grip teeth and an internal O-ring to provide a reliable connection. It is fully demountable, allowing pipework to be disconnected quickly for servicing or maintenance.
This adaptor connects 12mm John Guest Speedfit or Whale semi-rigid pipe to a 1/2" BSPP female threaded fitting, making it ideal for fresh water plumbing installations.
Yes. They are compatible with 12mm John Guest Speedfit pipe and 12mm Whale semi-rigid pipe, providing a quick and secure push-fit connection.
BSPP (British Standard Pipe Parallel) is a parallel thread commonly used on water pumps, taps, filters and other plumbing components. Always ensure the thread type matches your existing fitting before ordering.
No. The 12mm pipe simply pushes into the Speedfit connection. The threaded end should be installed using a suitable sealing washer or gasket where required by the application.
Can't find the answer you're looking for?
Give our technical team a call on 01271 611015 (Option 2) and we'll be happy to help.