The AirTAC GFR30010MJC3WTK AirTAC Filter Regulator NPT3/8 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 GFR30010MJC3WTK is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in one body. It removes water and particulate from compressed air through a 5 um element (the fine-grade W option; 40 um is the standard grade) and regulates downstream pressure across a 0.05-0.9 MPa (7-130 psi) adjustment range. This configuration is the 300 size with a 3/8 in NPT port, manual drain, a round pressure gauge reading in bar, a reverse/check valve fitted, and no mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl gives a clear view of condensate, drained by hand via the manual drain.
This is a genuine AirTAC part. The GFR family is available in 200, 300, 400 and 600 sizes with port sizes from 1/8 in to 1 in, a choice of drain types, 40 um or 5 um filtration, gauge styles and scales, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR30010MJC3WTK AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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 | Standard 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 | Fitted (reverse flow permitted) |
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. Standard type, regulating 0.05 - 0.9 MPa (7 - 130 psi). 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)). |
| (blank) | Standard 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. |
| K | Reverse-flow (reflux) valve fitted. |
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 filtered, regulated air to the tool-clamp and air-blast circuits of a CNC machining centre, where the 5 um element protects spools and seals and the check valve holds downstream pressure if the main supply dips.
Conditioning the supply to cylinders and grippers on a cartoning or wrapping line, with the bar gauge giving operators a visible setpoint and the manual drain suiting a machine serviced at shift start.
Supplying air to spray-gun and instrument take-offs in a finishing shop, where 5 um filtration limits water and particle carry-over and the regulator holds a steady pressure to the application point.
Choose the size and port step against the air consumption of the machine or line you are feeding: this unit is size 300 with a 3/8 in NPT port, one step up from the 1/4 in size-200 class and below the 1/2 in size-400 class. The 5 um element suits actuator and instrument air where finer particulate removal matters; the 40 um standard grade is the usual choice for general plant air. The manual drain means an operator drains the bowl periodically - choose automatic or differential-pressure drain codes if the unit will be installed where regular manual draining is impractical. The round bar gauge is the external option; an embedded square gauge with MPa, psi or bar scale is also available. PT is the standard thread, with G (BSPP) and NPT as order options, and the J code here means no mounting bracket is supplied. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as curves, not as a single rated number, so we do not quote a l/min, SCFM or Cv figure here. Tell us your application and we will confirm the relevant flow-curve and datasheet figures on request before you order.
The M code in GFR30010MJC3WTK specifies a manual drain: condensate collected in the polycarbonate bowl is released by hand, which suits positions checked during routine maintenance. If the unit will be mounted where regular draining is impractical, order the automatic-drain (A) or differential-pressure-drain (blank) variant instead - both are catalogue options in the same size.
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.