The AirTAC GFR30010JC3TK AirTAC Filter Regulator NPT3/8 is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/8" ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR30010JC3TK is a 300-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is 3/8 in NPT thread, carries a 40 um standard filter element, and drains condensate by differential pressure, so the bowl purges itself as the pressure differential across the element builds during normal operation. The regulator is the standard type with a 0.15-0.9 MPa (20-130 psi) adjustment range, a round external gauge scaled in bar is fitted, and a reverse/check valve is included to hold downstream pressure when the supply is removed. No mounting bracket is supplied with this code.
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with a choice of PT, G or NPT thread, differential-pressure, automatic or manual drains, 40 um or 5 um (W) filtration, gauge style and scale, and bracket options. Max inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing); the bowl on this 300 size is polycarbonate. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR30010JC3TK AirTAC Filter Regulator NPT3/8 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 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 | Differential-pressure 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 0.15 - 0.9 MPa (20 - 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". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 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. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Cleaning and regulating the shop-air feed to tool changers, clamps and air bearings on a machining centre, with the check valve holding set pressure during supply dips.
Conditioning air for carton-forming and case-sealing cylinders on a packaging conveyor, where self-draining keeps condensate off the valve bank during long runs.
Filtering and regulating air at a paint booth drop so regulators and spray equipment downstream see clean, stable pressure at the set point.
Size 300 with 3/8 in ports suits lines where the 1/4 in step is too small and 1/2 in is more than needed - match the size step to your flow demand using the published curves, not a single rated figure. Choose the drain to match duty: differential-pressure (this code) purges itself in continuous operation, automatic drains regardless of differential, and manual drain suits intermittent or monitored installations. Filter grade is 40 um here; specify W for 5 um where finer particulate protection matters. Gauge scale on this unit is bar via the round external gauge; square embedded gauges and MPa or psi scales are alternatives. Thread is NPT on this code while PT is the catalogue standard and G is also orderable, and J means no bracket - add the bracket code if you panel or wall mount. Ask us to confirm sizing against the application before ordering, since flow is published as curves.
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 GFR300 flow as performance curves, not a single rated number, so there is no one figure we can honestly quote. Tell us your line pressure, set pressure and expected air demand and we will confirm the sizing from the datasheet curves on request before you order.
In the GFR code, C selects the optional external round gauge and the trailing digit 3 sets its scale to bar; the standard alternative is the embedded square gauge. The K at the end of the code means a reverse/check valve is fitted, which holds downstream pressure if the upstream supply is lost. This unit has no bracket (J) and drains condensate by differential pressure.
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.