Dec 2016

How do you purchase top quality pump and valve casting?

Throughout the years our metal castings industry has drastically redefined in not only the machines used but also the procedures and processes implemented for pump & valve casting, that are important. One of the biggest changes these days is the engineering that goes behind it.


All of the products that come out of the manufacturing unit need to be thoroughly inspected in order to ensure it is perfect for the use. Stringent quality standards are followed in the foundries to make sure the buyer gets only the perfect product. Pump and valves are generally used for domestic purposes, industrial segment, mining industries, rail transit, chemical and construction machineries, industries locks and oil plates and aerospace.


The latest pump and valves are designed with lost wax investment casting process, which is durable and sturdy for any type of industry.


Guidelines purchasing and designing pump and valve casting


  • One of the first and foremost things is to select the foundry that has enough experience in casting pump & valve.


  • Be thorough and accurate about the quantities and quotation requests. The formal quote request need to have information such as the casting weight, material required, the quantity, stress relieving and annealing, letters of compliance and certificates need to be requested. The special packaging requirements also need to be mentioned so that the foundry can get a complete idea about it.


  • Legitimate CAD files or the blue prints need to be submitted in order to get precise results. The files need to contain the dimensions, radii, draft angle, angle tolerance, desired parting lines and the tooling points as well.


  • If possible uniform metal thickness need to be maintained during the casting process so that the final casting of pump & valve can be precise.


  • You need to decide about the materials of the pump and valve before purchasing and it depends on your budget and your requirement or purposes. Pumps and valves are generally designed and manufactured with alloy steel, aluminum, stainless steel, iron, zinc, brass and rough metals. Therefore, you need to choose the perfect one as per your requirement only.


  • The design or the pump should not have any square corners. On all the transitions or corners a substantial radius need to be maintained.


With the current development in technologies several foundry develop pump & valve and some of them build the tooling in advance. As a result there are wide ranges of possibilities for the buyers. However, when you choose the pump and valve for your industrial purposes, then you need to consult with the manufacturer with your specific requirement and measurement. Always go for quality materials for choosing pumps, and you need to verify their inspection and maintenance terms and conditions precisely.


Pump & valve casting approaches


The advancement in machineries and technology has made it possible to approach each casting with different methods and procedures. Although the procedures and steps might vary, mentioned below are 3 of the most common ways that foundries use for pump & valve casting.


  • Investment casting method


This method is practical, tried, and tested from years. This is a practical approach for carbon steel and stainless steel pump & valve. Especially, the ball valves get a good surface and design with this approach.

  • Sand casting method


This is a tried and test approach for the casting of cast iron. The gray iron casting, ductile iron casting for pump & valve have had great results with sand casting method. This method helps to attain a good inner quality and all the buyers needing specific requirements opt for this approach. However, in this approach the machine allowance is a little large and so it is the buyer who machines all the flange holes and contact surfaces. This is also a suitable approach for heavy or big sized pump & valve.


  • Lost foam casting method


This method helps to attain good dimension and surface finish and as a result, most cast iron valve parts are manufactured with this method.


The benefits of 3D print technology


Foundries get many advantages with the help of molds from 3D printers. The benefits range from short throughput times to the less post processing work required for the pump & valve casting. Another great advantage is the smooth surface quality of the cast parts.


In case of conventional manufacturing, it takes months from the inception to drawing and the finished parts delivered to the buyers. However, the 3D print technology has all the possibilities to turn around the time and provide results in considerably short time.


A 3D tool is used to generate the mold automatically based on the completed CAD design. It helps to print the sand molds and in this way, the otherwise expensive and time-consuming process is shortened. The high degree precision helps to generate complex geometry.


This technology is latest and when implemented this will give a competitive edge to most of the foundries to be more effective, superior, cost efficient, and fast suppliers of pump & valve casting product.


Use of technologies and approaches


Although 3D printing is an effective technology that saves time and cost most of the foundries have not yet implemented this approach for pump & valve casting. However, most of the experienced pump & valve casting foundries are still providing competitive rates, quick turnaround times and superior quality in the products that they manufacture. The various approaches in casting can help the manufacturer gain effective results in casting and can fulfill specific requirements of the buyers.


If the buyer is looking for pump & valve casting for their new assignment, it is best to get in touch with only the experienced foundries and then request for a quote for the specific requirements. Internet will help the buyers to get specific idea about the various parts and their prices in the international market. The quantity, time of delivery, material to be used, delivery, and other such details have a huge impact on the pricing, so the buyers need to make sure that all of these are mentioned in the quote.