Parker Watts B548-02AHC Miniature Filter Regulator, 1/4 in. NPT, 0 to 125 PSI
One body, two jobs. The B548 drops filtration and regulation into a single 1/4 in. miniature unit, which is what you want at a machine or a workstation where there is no room for a separate filter and regulator and no reason to pay for two bodies.
Published specification
- Port size: 1/4 in. NPT, with two 1/8 in. gauge ports
- Maximum inlet pressure: 150 PSIG with the polycarbonate bowl
- Reduced pressure range: 0 to 125 PSIG
- Flow: 12 SCFM at 100 PSIG inlet, 75 PSIG set, 25 percent droop
- Element: 20 micron, replacement kit EK504Y
- Bowl: polycarbonate, 1 oz. capacity, manual twist drain
- Maximum temperature: 125 F
- Weight: 0.3 lb
Figures are from Parker catalog 0730-2, Parker Watts General Line FRL.
Reading the part number
B548-02AHC breaks down as 1/4 in. NPT port (02), polycarbonate bowl (A), 20 micron element (H), 0 to 125 PSIG range (C). No trailing letter means manual twist drain, relieving, and no gauge supplied. A /M2 or /N suffix stamped on the label is a factory engineering change designator, not a different build.
Two things that catch people out
No gauge is included. If you need to see the setting, order a 1/8 in. gauge for one of the two ports or specify the -02AHCG build instead. And the polycarbonate bowl caps the unit at 150 PSIG and 125 F. Polycarbonate does not get along with synthetic compressor oils or solvent vapour, so on a machine running a PAO or diester lubricant, move to the metal bowl version rather than hoping.
Mounting
Vertical, bowl down. Bracket kit SA161X57 and panel nut R05X51 are ordered separately; the panel hole is 1.218 in.
Parker Watts B548-02AHC miniature integral filter regulator, 1/4 in. NPT, 20 micron, 0 to 125 PSIG, for point of use compressed air preparation.
NOTE: Actual product may be different from pictured!
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