JG CI320816S 3/8" PF - 3/4" BSP

JG 3/8" PF-3/4" BSP 3/4" BSP thread to 3/8" push fit connection from John Guest. Speedfit part number CI320816S.
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£3.90 inc-VAT


John Guest 3/4" BSP thread to 3/8" push fit connection for drinking water pipe. Designed to fit on to threaded undersink connections and screw thread washing machine connections, and also has easy to connect push fit connections for water filters, reverse osmosis filter systems, drinks, coffee and ice making machines. John Guest fittings are manufactured to the highest possible grade, and you can be assured they will not leak any potential contaminants back into your water supply.

There is an anomaly with regards to the actual BSP thread size, which can be terribly confusing. There are two different sizes used in water connections in UK.

As a guideline 
•If the diameter of your threaded fitting is in excess of 1” (25mm), then you will require a ¾” BSP fitting 
•If the diameter is ¾” (19mm), then you will require a ½” connection

A regular complaint is that we send out a 1” connection, not a ¾” connection. John Guest do not make 1” BSP female thread fittings.


  • 3/4" BSP thread
  • 3/8" push fit connection
  • Speedfit model number: CI320816S
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