This regulator is an exact and compatible replacement for an OEM regulator (Sears p/n: D27256), but at significantly less expense.
I replaced the faulty OEM regulator on my Craftsman air compressor (m/n: 919167240) with absolutely no difficulty. All female ports were the correct diameter and thread. The regulator functions precisely as expected under normal operation; I will update this review if the regulator fails prematurely.
The regulator comes without instructions, but replacing it is a straightforward. Nonetheless, I offer the following removal and installation procedure. You will need large channel-lock pliers, 1/2" open end wrench, and teflon tape (or, if you prefer, Loctite Threadlocker, both "Red" and "Blue", or similar product).
Removal:
1. Discharge all air from the tank. (optional: this is an opportunity to release the petcock valve on the tank bottom to blow out the water.). Be certain to re-tighten petcock valve after water/air discharge.
2. Spray WD-40, or similar, around the threads where the regulator body screws onto the brass nipple (short pipe).
3. Unscrew the output air pressure (left) gauge, and set aside.
4. Unscrew the tank air pressure (right) gauge, and set aside.
5. Unscrew the plastic flow control assembly (the black part of the regulator) from the metal body, then discard. (This step is required. The regulator will not clear the tank when threading it off the brass nipple.)
6. Unscrew the metal body of the regulator from the brass nipple, then discard.
Installation:
1. Inspect and make sure the brass nipple has not loosened from the male standpipe. If so, tighten it.
2. Carefully unscrew the plastic flow control assembly (the black part of the regulator) from the metal body, then carefully set the plastic assembly aside. (This step is required. The regulator will not clear the tank when threading it on the brass nipple.).
3. Wrap threads of brass nipple with Teflon tape (or Loctite Threadlocker Red, or similar).
4. Hand-tighten the metal body of the regulator onto the brass nipple until the base is snug AND oriented "up", then add one full turn with channel-lock pliers.
5. Wrap threads of output air pressure gauge with Teflon tape (or Loctite Threadlocker Blue, or similar); hand-tighten gauge onto left port of metal body to snug, then tighten to appropriate orientation with wrench.
6. Repeat process for tank gauge.
7. Wrap threads of quick connect fitting with Teflon tape (or Loctite Threadlocker Red, or similar); hand-tighten onto metal body to snug, then tighten one full turn with wrench.
8. Carefully hand-tighten the plastic assembly onto the metal base of the regulator, being especially mindful of the rubber o-ring between them, then tighten one-quarter turn with channel-lock pliers.
9. Power on unit and test for leaks and normal regulator operation.
| Manufacturer | DEVILIBISS |
|---|---|
| Part Number | D27256 |
| Item Weight | 3 pounds |
| Product Dimensions | 4 x 2 x 2 inches |
| Item model number | D27256 |
| Is Discontinued By Manufacturer | No |
| Material | Stainless Steel |
| Voltage | 120 Volts |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |
