The AirTAC GFR300C08LF1WTK AirTAC Filter Regulator 1/4 in NPT 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 GFR300C08LF1WTK is an AirTAC GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in a single body with a drain bowl. This configuration is built around a 1/4 in NPT port, the low-pressure regulator type, a 5 um filter element (code W), a differential-pressure drain and a metal bowl. It takes a maximum inlet pressure of 1.0 MPa (145 psi), operates from -5 to 70 C in non-freezing conditions, and includes an embedded square gauge scaled in MPa, a reverse/check valve and a mounting bracket.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and can be ordered with manual or automatic drains, the 40 um standard element, alternative gauge scales (psi or bar), an external round gauge, G or NPT threads and bracket options. Flow for the series is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your operating conditions before ordering.
| Model | GFR300C08LF1WTK AirTAC Filter Regulator 1/4 in NPT |
|---|---|
| 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) |
Feeding clamp and hold-down cylinders on a fixture line that must run at reduced pressure: the regulator trims downstream pressure while the 5 um element keeps water and particles out of the directional valves.
Point-of-use conditioning for carton sealers and wrapping heads on a packaging line: one body filters and regulates the air feeding small actuators and valves along the conveyor.
Supplying cleaned, regulated air to tool-changers, pallet clamps and air blasts on a CNC cell, with the check valve holding downstream pressure when the main supply dips.
Every choice in this series is decodable from the code. Step through sizes 200/300/400/600 to match port size and the flow your line needs - this unit is size 300 with a 1/4 in NPT port. Drain type: differential-pressure (this unit, the default), automatic (A) for unattended condensate removal, or manual (M). Filter grade: 40 um standard or 5 um (W) for finer protection - this unit carries the 5 um element. Gauges: the embedded square gauge with MPa, psi or bar scales, or an external round gauge. Thread: PT is the standard; G (BSPP) and NPT are order options. Brackets can be included or omitted (J). One honest note: 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 number, and we do not quote a figure that is not in the datasheet. Tell us your operating pressure and air demand and we will confirm the flow from the datasheet on request.
The drain on this unit is the differential-pressure type, the default: it discharges accumulated condensate when the pressure differential across the filter element rises. If you prefer hands-off drainage, the same size is available with an automatic drain (code A) or a manual drain (code M); note that drain type affects the standard regulator adjustment range, and for this low-pressure type we confirm the exact range on request.
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.