John Guest PM011516E - 3/4" BSP x 15mm Pushfit - Male BSP to Pushfit Straight Adaptor

John Guest PI010822S - Male NPTF to Pushfit Straight Adaptor - 1/4" NPTF x 1/4" Pushfit

John Guest PM011513E - 3/8" BSP x 15mm Pushfit - Male BSP to Pushfit Straight Adaptor

Reducing Straight Connector - 3/8" Male NPTF x 1/4" Pushfit - John Guest PI010823S

John Guest PI010802S - Male BSPT to Pushfit Straight Adaptor - 1/4" BSPT x 1/4" Pushfit

Reducing Straight Connector - 3/8" Pushfit x 5/16" Pushfit - John Guest PI201210S