Shop Talk From an Experienced Professional Frank Elliott
To make a pneumatic engineering decision one should look at the function needed to perform the work required from these explanations and decide which type of valve and actuator will perform the task. At that point flow and speed are to be considered.
Most fluid power Original Equipment Manufacturers (OEM’s) can supply a complete line of products to suit most needs. Companies (end users) have tendencies to be loyal to just one or two OEM’s.
Here at SAFE Air Valve, we are familiar with most of the line products available today. Since our core business is repairs, we are the ones who see how and why a product has failed.
As a rule most OEM’s like to exaggerate how well their products perform. If an end user is unsure what style of product to purchase we can be contacted (phone, fax, or e-mail) and offer (free of charge) unbiased help in selecting what OEM’s products will best suit your needs.
Note: For more information on design and engineering existing and future pneumatic systems an excellent engineering manual that contains just about anything feasible is “Manual of Pneumatic Systems Organization” by Henry Fleischer published by McGraw-Hill books.
As a general rule there are only three main types:
This is common when hazardous conditions are present. These are usually performed by a remote three or four way valve which when operated will cycle the main valve/function. These units are more commonly used where in-place maintenance is difficult.
These are usually cycled by a Central Processing Unit (CPU) or Programmable Logic Controller (PLC). Solenoids are very versatile in that whatever voltage is in use the solenoid can be set up for.
They are also extremely fast and efficient. There are two types of solenoid: direct and indirect acting. The direct type is a simpler design but has a tendency to burn up the electromagnetic coils which is the heart of any solenoid. When these work they work very well. Indirect operators are a three way valve unto themselves. These utilize air pressure to cycle a valve. They are pretty hard to burn up but dirty air will make these units inoperable. Service is (usually) pretty simple. At this point the user can call SAFE Air Valve and we can help in making the proper decision as to which type will best suit one’s needs.
These are commonly operated with a foot pedal, hand lever or button. These valves will supply air on demand. A good example is a lift in an automotive maintenance garage.
In addition to all the previously explained operator types, any voltage is available when electric solenoids are used. It all depends on the end user’s needs.
Call us toll free at 888-484-5169 today to find out more about our superior products and services, or simply complete our online contact form now!SAFE Air Valve Company
8766 Tyler Blvd.
Mentor, OH 44060