The AirTAC GFR300C08F2GK | AirTAC Filter Regulator G1/4 Psi Gauge 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 GFR300C08F2GK is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single compact body. This configuration is the 300 size with a G1/4 (BSPP) female port, a 40 um standard filter element, and a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element is high enough. The standard regulator adjusts outlet pressure across 0.15-0.9 MPa (20-130 psi), an embedded square gauge with a psi scale is fitted for direct reading, a reverse/check valve is fitted to hold downstream pressure when the supply is lost, and a mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The bowl on this 300 size is polycarbonate (PC).
This is a genuine AirTAC part. The GFR family spans four sizes (200, 300, 400, 600) covering ports from 1/8 in to 1 in, with automatic, manual or differential-pressure drains, an optional 5 um element (code W), gauge scales in MPa, psi or bar, and PT (standard), G or NPT threads to order. Flow is published by AirTAC as curves rather than a single rated figure, so we confirm the datasheet figures for your application on request.
| Model | GFR300C08F2GK | AirTAC Filter Regulator G1/4 Psi Gauge |
|---|---|
| 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) |
Feeds a point-of-use drop to a pneumatic clamping or press cylinder, where the 40 um element keeps machining moisture and pipe scale out of the valve and the regulator holds a steady clamping pressure at the station.
Supplies clean, regulated air to the cylinder-driven pushers and diverters on a packaging conveyor, with the check valve holding the gate position if the main supply drops during a shift.
Conditions the air feeding spray guns in a finishing booth: the filter bowl strips water carried in from the compressor ring main and the regulator sets the atomising pressure the painter dials in on the psi gauge.
Start with the size and port: 200, 300, 400 and 600 step up in port and flow capacity, so match the 1/4 in G-thread port on this unit to your line size and let us check the flow curve against your air demand before ordering. Choose the drain to suit the installation: differential-pressure (this unit) drains itself in service, automatic (code A) drains on a cycle, and manual (code M) needs someone to open the drain. Pick the element grade: 40 um standard for general plant air, or 5 um (code W) where downstream equipment needs finer filtration. Select the gauge scale (MPa, psi or bar) and thread (PT standard, G or NPT as options) to match the panel.
Be aware that AirTAC publishes flow as performance curves, not a single rated number, so send us your flow and pressure requirements and we will confirm the correct size from the datasheet 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 series as performance curves rather than a single rated figure, so there is no one l/min or SCFM number we can honestly quote. Send us your line pressure and air demand and we will confirm the sizing against the datasheet curves on request before you order.
This unit carries the 40 um standard element, which suits general plant air feeding cylinders, valves and air tools. If the downstream equipment needs finer protection, order the same unit with code W for the 5 um element; we can confirm the right grade for your application 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.