Frequently Asked Questions -

Does AirVerter® ship outside the United States?
Yes. Customers are responsible for all customs fees and duties. We will only put the actual value of the items on shipping forms.

When will I receive my order?
Standard shipping is UPS ground from our Maryland factory. We also ship USPS to APO and FPO addresses. Generally UPS ground shipments arrive on the West Coast within 5 to 7 working days and to other points within the continental US in shorter periods. We can also ship UPS three-day, two-day and overnight.

How much is shipping?
Shipping is our actual cost (we do not charge “handling”). While this works out great for spray guns and larger items, cleaning brushes and other small items are expensive to ship alone. Please note our minimum purchase per shipping address for both our military and commercial customers is $25.

Can I pay by check?
Yes you can… but a credit card is faster. We do not ship “check” orders until we have verified funds. This can delay shipment of orders up to two weeks.

Do you have a storefront we can visit?
We do not have a storefront at our plant but you are welcome to stop by and we will be happy to help you. Virtually all our customers purchase via telephone, fax or the internet – we sell all our equipment factory-direct.

Where can I purchase AirVerter products?
We only sell factory-direct. We do not use distributors. Military customers can purchase online via DSCC.

What is the warranty on AirVerter products?
AirVerter generally provides the warranty set forth below on all its products. However, please consult the the User Manuals posted elsewhere on this site for the specific warranty on the product you are purchasing.

Smith Eastern Corporation warrants to the Purchaser that the [AirVerter Product] is free from defects in material or workmanship under normal use and service for a period of twelve (12) months from the date of purchase. Should any failure appear during this period, Smith Eastern shall, if given prompt written notice by the Purchaser, correct such nonconformity by repair or replacement of the nonconforming part, F.O.B. Smith Eastern’s repair facility. Repair parts are warranted for ninety (90) days from the date of shipment, but repairs or replacements to original equipment shall not renew or extend the warranty period of such equipment. Equipment and parts furnished by Smith Eastern but manufactured by others shall be limited to the warranty offered by the manufacturer thereof.

Smith Eastern reserves the right to limit this warranty in cases of misuse or abuse. Any modifications to spray guns or recommended procedures will void the warranty.

The foregoing warranty is exclusive and in lieu of other warranties of quality or performance, expressed, implied or statutory, including any warranties of merchantability or of fitness for a particular purpose.

Where can I get specific answers regarding a spray gun?
There are brief descriptions of all our products on this web site. For technical questions please call or e-mail us.

Can I order by telephone?
Yes, you may telephone, fax or e-mail your order. If you would like to speak with someone regarding an order, please call us at 800-937-4857 during normal business hours, Monday through Friday 9AM – 5PM Eastern Time. Or e-mail us at and we will respond in a timely manner. If you have a technical question please contact us and we will be happy to help.

Which is better, HVLP (high volume low pressure) or conventional spray guns?
HVLP spray guns put more material on the work and less in the air as “overspray” which results in less material being used. Simply put, HVLP is less expensive to use and more environmentally friendly. Moreover many new environmental laws require the use HVLP spray guns thereby eliminating the choice. Please consult the laws and regulations in your state, county and/or city and purchase the correct spray gun for your intended application. See About HVLP and About Overspray.

What is HVLP?
High Volume, Low Pressure is an atomizing process that uses compressed air at pressures ranging from 1-10 PSI as measured at the spray gun air cap.

What is Transfer Efficiency?
Transfer efficiency is the portion of the atomized material that is actually deposited on the work piece. For instance if the transfer efficiency of a specific spray gun is 75%, it means that 75% of the material is applied to the work. The remainder is commonly referred to as overspray or waste.

How big does my compressor have to be?
Typically, you will need a 3-HP compressor that operates at 50 PSI and 19.4 CFM to properly supply air to a HVLP spray gun. We know of customers with 5-HP compressors that are not able to get enough free air (CFM) to operate their HVLP guns, but this is rare. Since CFM is compressor specific, you will need to refer to your compressor’s specifications to determine if you have enough air. An old rule of thumb is 4 CFM per HP, but this rule is not always accurate. Unfortunately we do not maintain information regarding compressor output. Please consult your owner’s manual or your compressor manufacturer.

What size tip should I use?
This is a difficult question to answer without knowing the exact material, temperature and conditions you’re working in. Below you will find a guide to the different tip sizes. Please be advised that this is only a guide and you should try a needle/nozzle size above and below the recommended size to be sure you will obtain the best results.


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