The AirTAC GFR300C10ALF2TK AirTAC Filter Regulator NPT 3/8 in 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 GFR300C10ALF2TK is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure at a set point, in one body. This unit is the 300 size with a 3/8 in NPT port, an automatic drain that ejects collected condensate without manual attention, and the standard 40 um filter element. The regulator is the low-pressure type; its exact setting range is not published, so we confirm it on request. A square pressure gauge graduated in psi is fitted, a reverse/check valve is built in, and a mounting bracket is included. The polycarbonate bowl suits the non-freezing -5 to 70 C working range at up to 1.0 MPa (145 psi) maximum inlet pressure.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drains, an optional 5 um element (code W), gauge scales in MPa, psi or bar, and G(BSPP) or NPT threads besides the PT standard. Flow is published as curves rather than a single rating, so ask us to confirm sizing figures from the datasheet for your application.
| Model | GFR300C10ALF2TK AirTAC Filter Regulator NPT 3/8 in |
|---|---|
| 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 filtered, regulated air to the clamp and tool-change cylinders on a CNC machining centre, with the built-in check valve guarding the circuit against back-flow.
Holding a steady set pressure to the carton-forming and sealing heads on a packaging line while the automatic drain keeps condensate out of the downstream valves.
Supplying the diverter-gate cylinders on a bulk-material conveyor with clean air at a low set point, the automatic drain coping with humid plant air.
Choose the size and port against the flow your line needs: this 300 unit covers a 3/8 in NPT port, with 200, 400 and 600 steps available if your demand is smaller or larger. This configuration pairs an automatic drain (no daily blowing down of the bowl) with the standard 40 um element; specify code W for the 5 um grade where finer particulate matters. The regulator is the low-pressure type, so if your set point sits low, confirm the exact range with us before ordering. The fitted square gauge reads in psi; MPa or bar scales, or an external round gauge, are the alternatives. Thread here is NPT; PT is the standard and G(BSPP) is orderable. Because flow is published as curves, not a single rating, ask us to check the curve against your application before you order.
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 flow for the GFR300 as curves rather than a single rated figure, so there is no honest single number to quote. Send us your line demand and we will confirm the sizing from the datasheet curve on request.
The L selects the low-pressure regulator type, intended for set points below the standard band; its exact range is not published, so confirm it with us before ordering. The A selects the automatic drain, which ejects bowl condensate by itself instead of waiting for a manual or differential-pressure dump.
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.