The AirTAC GFR300C10AJC2WTK 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 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 GFR300C10AJC2WTK is a genuine AirTAC GFR-series filter regulator: water and particulate filtration plus downstream pressure regulation combined in one body. This size 300 unit is threaded NPT3/8 (3/8 in), carries a 5 um filter element (code W), drains condensate automatically, and is fitted with an external round gauge reading in psi plus a reverse/check valve. Maximum inlet pressure is 1.0 MPa (145 psi) and the regulator adjusts from 0.15 to 0.9 MPa (20-130 psi). Operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR range spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, embedded square or external round gauges in MPa, psi or bar scales, PT/G/NPT thread options, and bracket choices. The size 300 bowl is polycarbonate (size 600 uses aluminium alloy). Flow is published as curves rather than a single rating, so ask us to confirm figures from the datasheet for your application.
| Model | GFR300C10AJC2WTK AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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) |
On a stamping or forming press fed from a shared compressor ring, this unit filters condensed water and scale out of the 3/8 in drop leg, holds a steady regulated pressure to the press cylinders, and the automatic drain clears condensate without operator attention between cycles.
Along a bottling or canning conveyor where pneumatic stoppers, pushers and grippers run all shift, the 5 um element protects the directional valves from fine particulate, the regulator holds set pressure for consistent actuator action, and the check valve holds the circuit if supply pressure dips.
On a lab automation or analytical-instrument air branch where clean, stable low-pressure air feeds grippers and small actuators, this unit gives 5 um filtration, psi-referenced regulation read on the round gauge, and automatic condensate draining in an unattended environment.
Size 300 with a 3/8 in NPT port is the step to pick when your line's porting and expected air demand sit between the smaller 200/300 units and the larger 400/600 units. Drain type is a real choice: automatic drain (as on this code) suits duty where nobody opens the bowl each shift; manual drain needs periodic operation; differential-pressure drain is the catalogue default. Filter grade is 40 um standard or 5 um (this unit, code W) when finer protection for downstream valves and cylinders matters. Gauges: an embedded square gauge is standard and an external round gauge is optional, in MPa, psi or bar scales - this unit carries a round psi gauge. Thread: PT is the standard; G (BSPP) and NPT are order options. This code (J) comes without a mounting bracket. Flow is published as curves, not a single rated figure, so 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 flow for the GFR series as curves rather than a single rated figure, so no single l/min or SCFM number is meaningful on its own. Tell us your inlet pressure, set pressure and expected air demand, and we will confirm the sizing from the datasheet curves before you order.
The 40 um element is the standard grade for general plant air; the 5 um element on this unit is the finer option when downstream directional valves, cylinders or instruments need better protection against fine particulate. The automatic drain (code A) ejects collected condensate from the polycarbonate bowl on its own, so the unit suits duty where nobody opens the drain each shift.
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.