... .5", 2", 2.5", 3", 3.5", 4", 6" 2)Connection size: 1/8" 1/4" 1/2" 3)CE Certificate ... ", 3/8", NPT, BSP or BSPT dependent on model & size. Bottom, backleft & right side connectionAVAILABLE RANGES:30Hg "- 0-15-15000PSIWINDOWS:Acrylic ... ", 3/8", NPT, BSP or BSPT dependent on model & size. Bottom, backleft & right side connectionAVAILABLE RANGES:30Hg "- 0-15-15000PSIWINDOWS:Acrylic ...