Some feed and dosing duties need liquid pushed at a steady high pressure. A double plunger pump uses two plungers to give that steady pressure feed.
The two plungers push in turn, which smooths the flow compared with one and holds the pressure the duty needs.
This guide explains what a double plunger pump does, where it fits, and how to keep it reliable.
What This Pump Does
The pump has two plungers that push liquid in turn, so as one finishes its push the other begins.
That gives a steadier high pressure flow than a single plunger, which would push in stronger pulses.
So the pump feeds liquid at a steady pressure that suits feed and dosing duties.
Where It Fits in the Plant
Feed duties that need liquid at a steady high pressure, and dosing of liquids that must be pushed against pressure, suit this pump.
It handles these duties with the steady pressure and reasonably smooth flow the two plungers give.
By feeding at a steady pressure, it keeps these pressure duties working.
Signs the Pump Needs Attention
A double plunger pump in trouble shows up in pressure and flow.
- The pressure falling below the duty need
- The flow pulsing more than usual
- One plunger not pulling its share
- Leaks at the plunger seals
- Vibration or noise while running
What Makes a Good Double Plunger Pump?
This pump is judged by steady pressure and sound plungers.
Steady High Pressure
The two plungers must feed at the steady pressure the duty needs. Steady pressure is the reason for the pump.
Sound Plungers and Seals
The plungers and seals work under pressure, so they must be sound. Good plungers keep the pressure up and the pump reliable.
Keeping the Pump Running
Routine attention keeps a double plunger pump at pressure.
- Watch the pressure and flow the pump feeds
- Check that both plungers pull their share
- Inspect the plunger seals for leaks
- Maintain the drive for reliable running
Common Questions About Double Plunger Pumps
Two plungers pushing in turn give a steadier high pressure flow than one plunger, which would push in stronger pulses.
On feed and dosing duties that need liquid pushed at a steady high pressure with a reasonably smooth flow.
Both build high pressure, but a triple plunger pump uses three plungers for an even smoother flow, often for cleaning jets, while the double serves steady feed and dosing.
Watching pressure and flow, checking both plungers, inspecting the seals, and maintaining the drive keep it feeding at pressure.
Steady Pressure Feed
A double plunger pump feeds liquid at a steady high pressure with two plungers, which suits feed and dosing duties. Steady pressure and sound plungers are what make it dependable.
If a feed duty needs steady high pressure, a double plunger pump fits. Explore our pumps and plant equipment for the right one.
See our range of pumps and feed liquid at a steady high pressure for feed and dosing duties.
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