Pump

A pump comprising:

• a barrel, with a top cap mounted in an end of the barrel, with another end of the barrel including a valve seat, with the valve seat including an air passageway, with an adapter mounted to a side of the valve seat and including a channel in communication with the air passageway, with the adapter including a pivotal end pivotably connected to the valve seat and located at an end of the channel;
• a piston rod including an end having an end portion connected to a handle, with the end portion including an inner periphery having a positioning portion, with the piston rod including a hollow receiving portion, with the piston rod engaged with the positioning portion of the end portion, with the piston rod extended into the barrel, with the top cap located between the piston rod and the end of the barrel, with a piston mounted to an end of the piston rod received in the barrel;
• a hose including an end connected to another end of the channel of the adapter opposite to the pivotal end, with the hose including another end, with a coupling seat mounted to the other end of the hose and including an inner thread, with a connecting block mounted around the coupling seat, with the connecting block positionable to a side of the barrel;
• and
• a hose with dual inflation nozzles, with two rotary inflation nozzles of different specifications mounted to two ends of the hose with dual inflation nozzles, with each of the two rotary inflation nozzles of different specifications having a coupling thread at an outer end of an outer periphery thereof, with the coupling threads of the two rotary inflation nozzles having identical size, with either of the coupling threads of the two rotary inflation nozzles threadedly engageable with the inner thread of the coupling seat, with one of the two rotary inflation nozzles insertable into the barrel, with another of the two rotary inflation nozzles including a positioning portion on an inner end of the outer periphery thereof, with the positioning portion of the other of the two rotary inflation nozzles engageable with the positioning portion of the end portion.