The John Guest Adapter - 3/8 Flex Tube x 3/8 BSPT/BSPP is a white plastic push-to-connect fitting with a hexagonal section and threaded end, ideal for espresso machines, water filters, or plumbing. © 2025 1st-line.com

John Guest Adapter – 3/8″ Flex Tube x 3/8″ BSPT/BSPP (for use on espresso machines)

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$5.00

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  • Parts are non-returnable and non-refundable unless damaged in transit.
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John Guest Male Connector 3/8″ Flexible Tube x 3/8″ BSPT or BSPP Adapter

Are you having trouble connecting the stainless steel braided hose from your espresso machine? Thiscoupling  is the perfect conversion to connect to the John Guest flexible tubing. The 3/8th” female is for the flexible tubing, and the 3/8th inch BSPP / BSPT is a male thread.

3/8M, 3/8″M, 3/8F, 3/8″F, BSPP, BSPT

Learn about and order any additional John Guest parts that we carry on its brand page.

Brand

John Guest
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Please review the FAQ to confirm the question or topic was not previously covered. Questions and topics can be submitted to F.A.Q. Any followup questions for FAQ should be requested as a separate FAQ submission.

    Do you have the version of this adapter that has 3/8" Female BSPP threads? I believe it's John Guest part number PI451213s. I bought a Vibiemme dual boiler machine from you and the included supply hose has male 3/8" BSPP threads.
  1. 0 votes
    Q Do you have the version of this adapter that has 3/8" Female BSPP threads? I believe it's John Gu...... Read more answer now
    Asked on May 3, 2026 12:47 pm
    A

    Unfortunately, we do not have the part you are looking for in stock. 
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