air compressor safety valve harbor freight brands

You may return or exchange the complete, new product within 30 Days. Items that are defective within the 30 days, can be sent back for an exchange of the exact product. There will be up to a 25% restocking fee on all returns unless you receive a manufacture defective product and it is returned within the 30 days.  We do not allow returns or exchanges on Special Order, Electrical, Adjustable, Safety Items, Food Products, and Car Audio Products if they are not Brand New in Factory Packaging.

The Harbor Freight compressor pressure switch, unloader valve, and other tips and the Central Pneumatic (HF’s house brand) found below have been filtered from the many contributions from folks that own and use Harbor Freight air compressors and have commented on this model here on about-air-compressors.com.

I sure appreciate that folks take the time to send tips in about the Harbor Freight or Central Pneumatic forum pages for all users. I’ll be adding more tips to this page as new ones come in, and as I find the gems hidden in the hundreds of postings about Harbor Freight and Central Pneumatic air compressors that have already been submitted in the ten years this site has been live.

Just ordered one from an Amazon store (Wessel) located in KY, not China. Cost $9.18, no tax or shipping, and will be here in a few days. Here’s the info: “New Heavy Duty Air Compressor Pressure Switch Control Valve 90 PSI -120 PSI ESUMIC” and it lists a 3-year warranty!

A similar switch with fulfillment by Amazon, meaning they have it at their warehouse already. You should get this one for a couple of dollars more in only a week or less. Only two days for Prime members. https://www.amazon.com/Compressor-Pressure-Switch-Control-90-120/dp/B008QV2O8G

Replacement reed valves for this model can be bought at Sears, part number E100229, for $4.59. If you can’t buy them at Sears, they’re also available on Amazon.

Found the gaskets for the 94667. Campbell Hausfeld and Husky model HL4000 are exactly the same as the #94667. Whoever makes the compressor obviously sells them to several retailers. You can buy the head rebuild kit HL026100AV for less than $25 on eBay or lots of other websites. It includes all gaskets, reed valves, and the head plate. And I’m guessing other HL4000 parts will fit on the #94667, too. I know this works, just did my #94667 and now it pumps right up and shuts off.

Wasn’t getting any air out of the coupler. …I realized that the end of the white plastic plunger inside the regulator was not long enough (was no longer long enough) to push the spring-loaded valve open to let the air out of the tank and to the quick coupler. So I put a little 1/8 inch diameter piece of a gasket material in there and it works fine. I suspect the plastic deformed a little in four years or the rubber plug it goes into. Maybe a person should back the regulator valve off when not in use. P.S. Your book is great.

Model 99781 Air Regulator (built into the manifold)Impossible to find a rebuild kit for it. Harbor Freight customer service tried but could not ID my 6-year-old unit. Solved by replacing existing manifold with Couplings and Tees with inexpensive regulator ‘in-line’ between tank gauge tee and the ‘regulated flow’ gauge tee. I relocated the pressure relief safety valve to the 1st tee which connects the incoming tank line and tank pressure gauge mounted on end. Had to cut a hole in the cover housing. The tee is ended where mounting was a little odd but it works fine.

We’re pulling together some Harbor Freight and Central Pneumatic Unloader Valve tips. In the meantime take a look at our ultimate guide to air compressor unloader valves. You’ll find handy tips on how to troubleshoot unloader valve issues, as well as common tasks such as how to install an unloader valve and how to adjust an unloader valve.

Brand new reed valve replacement set, part number E100229. You will recieve two (2) reed valves with this purchase. For guaranteed fitment, check the measurments below. These reed valves work with the following air compressors & more: