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John Guest - Acetal Stem Adapter Fitting - Grey - British Standard Pipe Thread (BSPT)

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John Guest - Acetal Stem Adapter Fitting - Grey - British Standard Pipe Thread (BSPT)

John Guest acetal stem adapter fittings deliver push-to-connect convenience with British Standard Pipe Thread (BSPT) compatibility for secure, leak-free connections in potable water, air, and CO2 applications. Manufactured in the UK with food-grade nitrile O-rings and grip-then-seal collet technology, these fittings install in seconds without tools and handle higher temperatures than standard polypropylene alternatives.
SPECIFICATIONS

John Guest Acetal Stem Adapter Technical Details

Manufacturer John Guest Speedfit (UK)
Material Acetal copolymer body with food-grade nitrile O-ring
Thread Standard British Standard Pipe Thread (BSPT)
Connection Type Push-to-connect with grip-and-seal collet
Suitable For Potable water, air, inert gases, CO2, pneumatic systems, vacuum
Temperature Resistance Higher heat tolerance than polypropylene fittings
Color Grey
Applications Tap connections, toilet supply, filtration systems, pneumatic lines
INSTALLATION & USE

Installation Process

  1. Ensure tubing is cut square and free of burrs or debris
  2. Push the fitting fully onto the tubing until it bottoms out in the collet
  3. Turn the fitting onto the BSPT threaded connection until hand-tight
  4. To disconnect, unlock the nut, push the collet toward the body, and pull the tube to release
COMPATIBILITY

Thread Sizing Reference

BSPT threads measure larger than their nominal size when measured with a ruler. A 1/8" BSPT measures approximately 0.383" actual diameter, 1/4" BSPT measures 0.518", 3/8" BSPT measures 0.656", and 1/2" BSPT measures 0.825" across the threads. This is standard for British Standard Pipe Threads and not a manufacturing defect. Verify your existing thread size with calipers or the actual diameter measurement before ordering.

🔧 Always measure the actual thread diameter with calipers rather than assuming nominal size. BSPT threads are tapered and measure significantly larger than their fractional designation, which prevents compatibility issues and returns.
John Guest acetal stem adapter fittings deliver push-to-connect convenience with British Standard Pipe Thread (BSPT) compatibility for secure, leak-free connections in potable water, air, and CO2 applications. Manufactured in the UK with food-grade nitrile O-rings and grip-then-seal collet technology, these fittings install in seconds without tools and handle higher temperatures than standard polypropylene alternatives.
SPECIFICATIONS

John Guest Acetal Stem Adapter Technical Details

Manufacturer John Guest Speedfit (UK)
Material Acetal copolymer body with food-grade nitrile O-ring
Thread Standard British Standard Pipe Thread (BSPT)
Connection Type Push-to-connect with grip-and-seal collet
Suitable For Potable water, air, inert gases, CO2, pneumatic systems, vacuum
Temperature Resistance Higher heat tolerance than polypropylene fittings
Color Grey
Applications Tap connections, toilet supply, filtration systems, pneumatic lines
INSTALLATION & USE

Installation Process

  1. Ensure tubing is cut square and free of burrs or debris
  2. Push the fitting fully onto the tubing until it bottoms out in the collet
  3. Turn the fitting onto the BSPT threaded connection until hand-tight
  4. To disconnect, unlock the nut, push the collet toward the body, and pull the tube to release
COMPATIBILITY

Thread Sizing Reference

BSPT threads measure larger than their nominal size when measured with a ruler. A 1/8" BSPT measures approximately 0.383" actual diameter, 1/4" BSPT measures 0.518", 3/8" BSPT measures 0.656", and 1/2" BSPT measures 0.825" across the threads. This is standard for British Standard Pipe Threads and not a manufacturing defect. Verify your existing thread size with calipers or the actual diameter measurement before ordering.

🔧 Always measure the actual thread diameter with calipers rather than assuming nominal size. BSPT threads are tapered and measure significantly larger than their fractional designation, which prevents compatibility issues and returns.
Select Stem Connection OD ("Outer Diameter")
Select Threaded NPT ("National Pipe Thread")
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From $0.28

Original: $0.80

-65%
John Guest - Acetal Stem Adapter Fitting - Grey - British Standard Pipe Thread (BSPT)—

$0.80

$0.28

Description

John Guest acetal stem adapter fittings deliver push-to-connect convenience with British Standard Pipe Thread (BSPT) compatibility for secure, leak-free connections in potable water, air, and CO2 applications. Manufactured in the UK with food-grade nitrile O-rings and grip-then-seal collet technology, these fittings install in seconds without tools and handle higher temperatures than standard polypropylene alternatives.
SPECIFICATIONS

John Guest Acetal Stem Adapter Technical Details

Manufacturer John Guest Speedfit (UK)
Material Acetal copolymer body with food-grade nitrile O-ring
Thread Standard British Standard Pipe Thread (BSPT)
Connection Type Push-to-connect with grip-and-seal collet
Suitable For Potable water, air, inert gases, CO2, pneumatic systems, vacuum
Temperature Resistance Higher heat tolerance than polypropylene fittings
Color Grey
Applications Tap connections, toilet supply, filtration systems, pneumatic lines
INSTALLATION & USE

Installation Process

  1. Ensure tubing is cut square and free of burrs or debris
  2. Push the fitting fully onto the tubing until it bottoms out in the collet
  3. Turn the fitting onto the BSPT threaded connection until hand-tight
  4. To disconnect, unlock the nut, push the collet toward the body, and pull the tube to release
COMPATIBILITY

Thread Sizing Reference

BSPT threads measure larger than their nominal size when measured with a ruler. A 1/8" BSPT measures approximately 0.383" actual diameter, 1/4" BSPT measures 0.518", 3/8" BSPT measures 0.656", and 1/2" BSPT measures 0.825" across the threads. This is standard for British Standard Pipe Threads and not a manufacturing defect. Verify your existing thread size with calipers or the actual diameter measurement before ordering.

🔧 Always measure the actual thread diameter with calipers rather than assuming nominal size. BSPT threads are tapered and measure significantly larger than their fractional designation, which prevents compatibility issues and returns.
John Guest - Acetal Stem Adapter Fitting - Grey - British Standard Pipe Thread (BSPT) | Isopure Water