PRODUCT SERIES MODEL NO. PRODUCT DESCRIPTION DATASHEET / MANUAL KDPG-13 KAQ Double Diaphragm Type Differential Pressure Gauge Data Sheet Manual KDPG-21 KBA Single Diaphragm Type Differential Pressure Gauge Data Sheet KDPG-25 KBF Piston Operated Differential Pressure Gauge Data Sheet Manual KDPG-26 KBG Diaphragm Operated Differential Pressure Gauge Data Sheet KDPG-30 KDPG Differential Pressure Gauge - Diaphragm Type Data Sheet KDPG-36 KBQ Bellow Type Differential Pressure Gauge Data Sheet Manual KDPG-37 KDIS Differential Pressure Gauge with Switch Data Sheet Manual