When choosing an acid pump, it's important to consider the specific properties of the chemicals being handled. Here are some general guidelines based on common acids:
1. **Hydrochloric Acid Pump**: Typically, hydrochloric acid with a concentration up to 38% is considered. This acid is corrosive and has a relatively low density. If your medium is free of impurities, a leak-proof CQB fluoroplastic magnetic pump is recommended. However, if there are small amounts of impurities present, an IHF lined fluoroplastic centrifugal pump, which offers better corrosion resistance, would be preferable. For highly abrasive applications, a wear-resistant mortar UHB-ZK pump might be more appropriate.
2. **Sulfuric Acid Pump**: Sulfuric acid pumps are further categorized into dilute sulfuric acid pumps and concentrated sulfuric acid pumps. For dilute sulfuric acid, you can opt for an engineering plastic pump, F46 pump, or F26 pump. On the other hand, concentrated sulfuric acid requires a fluoroplastic (F46) pump since common engineering plastics cannot withstand its corrosiveness. Additionally, given the high density of concentrated sulfuric acid, ensure that the pump's motor power is sufficiently robust; a simple calculation suggests multiplying the "shaft power" by 1.84 to determine the required power for concentrated sulfuric acid handling.
3. **Hydrofluoric Acid Pump**: Hydrofluoric acid is extremely corrosive, and it is advisable to use a fluoroplastic magnetic pump. Furthermore, any parts of the pump exposed to hydrofluoric acid should be made of ceramic materials to prevent corrosion.
4. **Nitric Acid Pump**: Nitric acid handling also calls for the use of fluoroplastic magnetic pumps. In this case, rubber seals should be replaced with PTFE material to enhance chemical resistance.
5. **Acetic Acid Pump**: Acetic acid is among the most corrosive organic acids. Standard steel is not suitable for acetic acid at any concentration or temperature, whereas stainless steel serves as an excellent material for acetic acid resistance. Stainless steel containing molybdenum, like 316 stainless steel, is ideal for handling high-temperature and dilute acetic acid vapor. For extreme conditions involving high-temperature and high-concentration acetic acid or other corrosive media, high-alloy stainless steel or fluoroplastic magnetic pumps, such as CQB magnetic pumps or CQ316L stainless steel magnetic pumps, are recommended.
6. **Brine (Seawater) Pump**: Steel performs adequately in sodium chloride solutions and seawater with respect to corrosion rates, but protective coatings are usually applied. Stainless steel exhibits a low uniform corrosion rate, yet localized corrosion from chloride ions could occur. Therefore, fluoroplastic centrifugal pumps, such as the IHF-type fluoroplastic centrifugal pump, are recommended. Alternatively, a leak-proof fluoroplastic magnetic pump could be considered.
7. **Sealing Options**: Magnetic pumps feature a static seal, eliminating the need for additional sealing considerations. Centrifugal pumps typically employ external bellows mechanical seals, which offer superior corrosion and wear resistance. If the medium contains particles, hard-to-hard mechanical seals are a practical choice.
For more detailed information regarding acid pumps, feel free to consult Zeus Pumps. Best regards, Tan Xiping.
Oil & Gas Hydraulic Diaphragm Metering Pump
*Multi-function valve can protect hydraulic shock, keep balance of the diaphragm, which to enhance the service live of diaphragm
*Pressure is up to 69MPa, metering accuracy reached ±1%
*Single pump flow range: 0.2L/H --- 12000L/H
* Double diaphragm design with diaphragm rupture alarm system.
* Hydraulic actuated Diaphragm Metering Pump, no leakage.
* The flow can be adjusted from 0-100% while it's running or
stopped.
*With the design of inner changeable release safety valve
and limited auto-compensation
valve.
* Diaphragm material:
PTFE
* Both manual control and digital control for 4-20mA is available.
* Double or triple pump heads is available.
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