Our DP series plunger metering pump is a valve-less pump that uses no valves to regulate the flow direction. Unique to this plunger pump is the specially designed plunger that simultaneously rotates and reciprocates to take in and discharge liquids, all the while closing or opening the discharge or suction end. The valve-less design allows the plunger metering pump to remain energy efficient when operating across a wide range of high flow rates.

High metering accuracy is achieved by monitoring and controlling both the reciprocating and rotary speeds of the plunger, which makes the plunger pump suitable for applications that require extremely accurate controlled movement of high-viscosity media that contain solid particles. Other than transporting viscous media, this dosing pump is also seen in various demanding processes that involve high pressure and high temperatures.

As a matter of fact, DP series plunger metering pump has become the main workhorse in a number of industries listed as follows.
1. Chemical engineering
2. Petrochemical industry
3. Natural gas transportation
4. Oil and gas field
5. Foaming industry
6. Electricity generation
7. Metallurgy

Technical Specifications
1. Built in conformance with API675 standards
2. Metering accuracy: ±0.5% (within the range of 10%~100% of capacity)
3. Flow rate can be adjusted in many ways, manually, electrically, pneumatically, or via the VFD
4. Up to a maximum of 12 pump heads can be connected in parallel
5. Maximum flow rate per pump head: 12100L/h, maximum pressure: 95MPa
6. Material of pump wetted parts: 304, 316, 316L, 904, Haynes alloy

Working Principle of Plunger Metering Pump
There is a direct physical contact between the plunger and the process liquid. As the plunger reciprocates, the volume of the liquid chamber changes periodically which in turn decreases or increases the liquid pressure that results in the suction or discharge of the liquids.

Ready to buy a hydraulic diaphragm metering pump from us? Simply click on to fill out our Metering Pump Specifications Form and one of our professional design consultants will get back to you shortly.