Friday, 5 August 2016

Top 5 Factors Consider When You Select Chemical Metering Pump Manufacturers for Water Treatment Equipments System?

Metering pump have become a top choice for the injection of chemicals in water treatment, processing and agricultural applications. Many styles and modes of operation are available, so users must understand the different metering pump technologies in order to select the ideal equipment for their injection applications. There are many types of ideal metering pump manufacturers in india for your applications.

Automatic Metering and Metering Pump Manufacturers in India

A typical metering pump application in water treatment equipments, chemical process or agriculture can deliver large amounts of chemicals during daily operations. While the volumes may be large, the metering also must be precise, with exact amounts delivered according to strict injection schedules. The wide range of injection pressures, from high to low, must also be governed precisely. These demanding applications require the use of a unique pumping technology, one that can ensure successful, reliable adherence to the injection schedule and fluid volumes.

When determining which metering pump is the best option for a chemical injection application, users must consider several variables:

Flow Rate:

Metering pumps should never be oversized, so determining the exact flow rate required for the application is paramount. A metering pump should be sized so that the maximum expected flow rate is 85 to 90 percent of the pump's capacity.

Materials of Construction:

Metering pumps are available in a variety of materials, most commonly 316 stainless steel, C-20 stainless steel, PVC and Kynar polyvinylidene fluoride (PVDF). Users must consider the corrosion, erosion and solvent action of the chemical. For example, solvent-based chemicals may dissolve plastic-headed pumps, while acids and caustics may require stainless-steel models. The effects of erosion must also be considered with abrasive slurries.

Chemical dosing system come in many formulations, from thin to highly viscous, and they can also be classified as a slurry or off-gas when transferred. Standard metering pumps are typically able to handle clear liquids with viscosities ranging from water-like to 1,500 centipoise (cPs). Chemicals with viscosities that approach 5,000 cPs or have light suspensions will require special liquid ends. Those with viscosities up to 20,000 cPs or that contain up to 10 percent solids will require special diaphragms, while ones that automatically vent accumulated gas will need their own type of liquid ends.

Driver :

Drivers - which can be powered by electricity, water, gas, air or the sun—must be selected according to the utilities that are available. Users must also consider any environmental hazards that may be found in the operating area, with the operator realizing that pumps used in remote locations may not be able to be inspected as often as those in controlled environments.

How to Buy Best Dosing & Metering Pump from Manufacturers in India
How to Buy Dosing & Metering Pump from Manufacturers in India
Environment :

Determine if the pump will be operating indoors or outdoors. If used outdoors, the pump must be sheltered from direct sunlight. Any pumps that will be used in freezing temperatures can only pump fluids that will not freeze at that temperature.

Method of Control:

The operator must know if the pump will be used in manual continuous operation, on/off operation or operation that is governed by a process signal.

Metering pumps that use a variable speed drive will deliver a turn down ratio that is determined by dividing the pump's stroke speed by its minimum operating speed. A variable speed drive will enable the pump to inject a dose of the same size on each stroke, but because the stroke speeds will change, the doses themselves will be less frequent. I strongly suggest, focus engineerrs are leading dosing and metering pump manufacturers in india for cosumers needs.

However, electronic metering pumps, which are pulsed by a solenoid, can operate at less than one spm because the timing of each stroke, from start to finish, is uniform at every stroking speed.

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