Can I use this pump on a freeze dryer ?

Before buying this pump I would check with the Robinair Application Engineering Department directly on this question. This pump is Made in the USA and has been for at least forty years so they will know. I would ask to speak with a Pump Mechanical Engineer there... not a sales or "Support" person who will likely NOT know much about this application. You will want to be prepared to discuss the exact refrigerant you will be using and details about exactly how you would be using it in your system. I promise you if you intend to evacuate any flammable or explosive refrigerant they will say, NO! This vacuum pump will pull down an Air Conditioning system vacuum to 10 microns or less. It is an excellent pump, bar none! Having said that, a very important part of achieving this extremely low vacuum and long pump LIFE to change the oil each time you evacuate an A/C system. The oil viscosity helps form the seal inside the pump twin chambers. Please contact Robinair on this before buying this pump. I hope this will help you!

Picture it’s made in the usa, and the list china !! which one is correct?

Hi, I looked at the Robinair label located on the information plate of the motor. This unit is made in the USA in their factory... I believe in Warren, Michigan. Some of the parts, for example, electric motors, are made in China to Robinair Engineering specifications. The vacuum chamber on this 15600 was designed by Robinair US engineering many years ago and made in the USA to extremely close tolerances. I worked in the refrigeration industry for over thirty years for Thermoking and Carrier in transport refrigeration and auto/truck dealer A/C and have used this Blue handled Robinair 15600 vacuum pump for all of those years without failures. So when I retired, it was an absolute no-brainer to get this model of pump for my own vehicle use. You can be sure that this pump, while more expensive, in my opinion, it's well worth the money. It will pull-down to less than 15 microns (0.015) of a millimeter of mercury with my Thermal Engineering electronic analog vacuum meter) without fail and pull-down very quickly. This is incredible and very close to an absolute vacuum. I always check the pump pull-down FIRST to make sure it gets there, before hooking it up to the system. One thing I can say is this, if you want your pump to last many, many years, you MUST change the pump oil after every system evacuation. I drain the oil out after the evac and then store the pump refilling it with oil just before I do my next evac. I use the Robinair Premium High Vacuum Pump Oil P/N 13203. This is available from your local HVAC Refrigeration wholesaler for about $6/quart. I have no experience with other brands of oil that are cheaper because we always used this outstanding oil in the 15600's. Please note, the oil actually seals the vane chamber and allows such a deep pull- down. As a final note, Robinair does make some other less expensive RED HANDLED vacuum pumps that are completely made in China. Many people have complained about them. If you purchase this Blue handled one you will be very happy with it and never look back at the price you paid. Just take good care of it by changing the oil and follow the written instructions to the letter. Hope this helps you! ASE Master Automobile/ASE Master Medium/Heavy Truck Technician/ BSEE

Can I use this with a 5 gallon pressure chamber for resin work?

YES. Not sure what the above are basing their answers on. I’m using it for exactly that (Cactus Juice stabilizing) after upgrading from the HF 3cfm. Be sure to use the gas ballast feature, or you’ll get water condensation in your oil REAL quick, rust out the pump etc. Also change oil periodically, especially if you have water in there or notice loss of vacuum. But yes, it will totally pull near total vacuum on on a casting chamber.

Is there a 3/8" inlet?

yes there is a tee with 3/8'' and 3/8" and 1/4" connections, the connections you don't use have a cap, included. very nice piece of equipment for the pro

Manufacturer	Robinair
Brand	Robinair
Model	15600
Product Dimensions	47.24 x 19.56 x 29.97 cm; 12.25 kg
Item model number	15600
Manufacturer Part Number	15600
Voltage	115 Volts
Item Weight	12.2 Kilograms

Robinair (15600) CoolTech Vacuum Pump - 2-Stage, 6 CFM

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