The AirTAC GFR30010MLJC3WT AirTAC Filter Regulator NPT3/8, 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/8" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR300 combines water and particulate filtration with pressure regulation in a single body, so one unit both cleans the compressed air and sets its working pressure downstream. This GFR30010MLJC3WT is the 300 size with a 3/8 in NPT port, fitted with a 5 um filter element (code W) for finer particle capture than the standard 40 um grade, a manual drain for emptying the PC bowl, and the low-pressure regulator type for circuits that run at reduced working pressure. It carries a round external gauge reading in bar and is supplied without a mounting bracket.
This is a genuine AirTAC part. The GFR filter-regulator family is available in sizes 200, 300, 400 and 600 with a choice of ports, threads (PT standard, G and NPT as order options), drain types, filter grades, gauge styles and scales, and standard or low-pressure regulation. Flow is published as curves rather than a single rating, so ask us to confirm the figures for your application and we will send the datasheet on request.
| Model | GFR30010MLJC3WT AirTAC Filter Regulator NPT3/8, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Low-pressure type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, bar scale |
| Reflux valve | Not fitted |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| 10 | Port size PT3/8". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR300 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Feeding the pneumatic cylinders on a carton-forming and sealing line: the 5 um element keeps fine particles out of valve spools, the regulator holds a steady reduced working pressure for consistent jaw and pusher motion, and the manual drain clears accumulated condensate during shift checks.
Supplying clamps and test actuators on a lab or QC bench where air quality matters: the fine 5 um grade protects sensitive instrumentation and seals, the low-pressure regulator type suits circuits that run well below full line pressure, and the bar gauge gives a direct local reading.
Running the air cylinders on divertors, stoppers and lifters along a conveyor line: the combined filter and regulator in one body saves panel space at each drop, the manual drain suits stations visited on routine rounds, and the 3/8 in NPT port matches typical branch-line tubing.
Start with the port step: the 300 size takes a 3/8 in port, and larger sizes (400, 600) pass more flow at the same pressure - match the size to your line's demand rather than upsizing by habit. Choose the drain to suit access: manual drain (this unit) needs someone to open it periodically; automatic and differential-pressure drains empty themselves. The 5 um element (W) suits finer air-quality needs; the standard grade is 40 um. Gauge options are an embedded square gauge or an external round gauge, with MPa, psi or bar scales - this unit has a round gauge in bar. Thread is PT as standard, with G (BSPP) and NPT as order options; this unit is ordered in NPT. Brackets are optional (this unit is without one).
One honest note before you order: filter-regulator flow is published as curves, not a single rated figure, so we cannot quote you one number here. Send us your application details and we will confirm sizing against the datasheet before you commit.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes filter-regulator flow as curves rather than a single rated figure, so we do not quote one number. Tell us your application - line pressure, downstream demand and allowable pressure drop - and we will confirm the sizing from the datasheet and send it to you on request before you order.
The M in the code specifies a manual drain: the PC bowl is emptied by hand at intervals, which suits stations checked on a routine round. The GFR family is also available with automatic or differential-pressure drains that empty the bowl without operator action - ask us to quote the equivalent model if you would rather not drain manually.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.