Using silicone o-rings in dual action irrigation pump

A disposable dual-action reciprocating pump part, comprising:

• an input port;
• an output port;
• a piston and a cylinder, the piston being configured to move bi-directionally inside the cylinder to cause fluid to be pumped from the input port and through the output port, the cylinder and output port being connected by a first channel disposed on a first side of the piston and a second channel disposed on a second side of the piston;
• a first non-return valve disposed in the first channel such that fluid flows through the first channel and not the second channel while the piston moves toward the first channel;
• a second non-return valve disposed in the second channel such that fluid flows through the second channel and not the first channel while the piston moves toward the second channel;
• a rod coupled to the piston, the rod having a first portion extending away from the piston in a first direction and a second portion extending away from the piston in a second direction that is opposite to the first direction;
• a mechanical smoothing mechanism, comprising:
• a guide hub including a guide channel connected to the rod, the guide channel having a guide profile,
• a cylinder head,
• a rotary shaft coupled to the cylinder head,
• a bar disposed though the guide channel and attached to the cylinder head,
• such that the mechanical smoothing mechanism is configured to induce the rod to move back and forth along its axis in the first direction and the second direction.