The AirTAC GFR300C08F1WTK AirTAC Filter Regulator NPT1/4 5 um 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 GFR300C08F1WTK is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and holds downstream pressure in a single body. This configuration is threaded NPT 1/4 in, fitted with a 5 um filter element (code W), a differential-pressure drain, an embedded square gauge scaled in MPa, a reverse/check valve (code K) and a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi), the regulating range is 0.15-0.9 MPa (20-130 psi), and the working temperature is -5 to 70 C, non-freezing. The bowl on this size is polycarbonate.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, ordered with a choice of drain type, 40 um or 5 um filtration, gauge type and scale, PT, G or NPT thread, and bracket. Flow is published only as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR300C08F1WTK AirTAC Filter Regulator NPT1/4 5 um |
|---|---|
| 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. |
|---|---|
| C0 | 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-C0 (two-unit set) |
Filtered, regulated air to the tool-change cylinders and pilot valves of a CNC cell, with the 5 um element guarding fine directional valves upstream of the machine.
Holding a set clamping pressure on a stamping-cell pneumatic clamp circuit, with the fitted reverse/check valve in place for supply-interruption protection.
Regulated air for pick-and-place cylinders and ejector feeds on a packaging conveyor line, with the differential-pressure drain handling collected water while the line runs.
Choose the size by port and demand: sizes 200, 300, 400 and 600 step up from 1/8 to 1 in, and capacity rises with size - but flow is published as curves, not a single rating, so confirm sizing against your application before ordering. Pick the drain: differential-pressure (this unit), automatic (A) or manual (M). Pick the element: 40 um standard or 5 um (W) for finer protection - this unit carries the 5 um grade. Gauge: embedded square (this unit, MPa scale) or external round, in MPa, psi or bar scales. Thread: PT is the standard; G (BSPP) and NPT (this unit) are catalogue options to order. A mounting bracket is included (code J deletes it), and the reverse/check valve (K) is fitted on this unit.
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 GFR300 flow as curves rather than a single rated figure, so no rated flow number is quoted here. Send us your flow and pressure requirement and we will confirm the datasheet and correct sizing on request.
The W in the code selects the 5 um element for finer protection of pilot valves and precision actuators; the blank code is the 40 um standard. This unit is supplied at 5 um, and either grade works with the differential-pressure bowl drain fitted here.
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.