The AirTAC GFR300C10AC3TK AirTAC Filter Regulator NPT3/8, Auto Drain 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 See datasheet 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 GFR300C10AC3TK is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure steady. This size 300 unit is threaded NPT3/8, carries the standard 40 um filter element, and drains condensate automatically, so the polycarbonate bowl empties itself without daily attention. It is fitted with a round pressure gauge reading in bar and a reverse (check) valve. Maximum inlet pressure is 1.0 MPa (145 psi), the regulator adjusts from 0.15 to 0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um (W) filtration, embedded square or external round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm the sizing and datasheet figures for your application.
| Model | GFR300C10AC3TK AirTAC Filter Regulator NPT3/8, Auto Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT 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 — factory standard, Factory standard 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. 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. |
|---|---|
| C1 | Port size See datasheet. 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. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C1 (two-unit set) |
Feeding the valve-and-cylinder control circuit of a cartoning or wrapping machine: the filter stage strips water and swarf from the shop air line, the regulator holds a steady supply pressure to the directional valves, and the check valve holds the setting if upstream pressure dips.
Supplying the short-stroke cylinders that stop, divert and align product on a conveyor line: clean, regulated air keeps the actuators cycling consistently through a shift, and the automatic drain keeps condensate out of the valve bank below.
A wall-mounted air drop in a maintenance or automotive workshop feeding impact wrenches, air ratchets and blow guns: the 40 um element protects the tools from rust and dirt carried in the line, and the bar gauge gives a clear reading at the point of use.
Size 300 with a 3/8 in NPT port suits lines that need moderate flow in a compact body; step up to size 400 or 600 for larger demand, or down to 200 for smaller take-offs. This configuration has an automatic drain, which suits unattended installations; manual (M) and differential-pressure (blank) drains are alternatives in the same size. The 40 um element is the standard grade - specify W for 5 um where finer particulate removal matters. The round gauge on this unit reads in bar; an embedded square gauge and MPa or psi scales are the other catalogue choices. Thread here is NPT; PT is the standard and G is also an order option. A mounting bracket is included. Because flow is published as curves, not a single rated figure, 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. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes G-series flow as curves rather than a single rated figure, so we do not quote a number here. Tell us your line pressure and the demand of the equipment downstream, and we will confirm the flow and sizing figures from the datasheet on request.
The A in the code sets an automatic drain: condensate collected in the polycarbonate bowl is expelled on its own, so the unit suits installations that run unattended. Manual (M) and differential-pressure (blank) drains are the alternatives in the same size, and the regulator range on this automatic-drain configuration is 0.15-0.9 MPa (20-130 psi).
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.