The AirTAC GFR300C08JC2WGK AirTAC Filter Regulator G1/4, 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 AirTAC GFR300C08JC2WGK is a size-300 filter regulator: water and particulate filtration plus downstream pressure regulation in a single body. This configuration is threaded G1/4 (BSPP), filters to 5 um for cleaner air than the standard 40 um element, and drains condensate by differential pressure, so the bowl empties itself whenever the pressure differential is high enough - no daily manual draining on lightly loaded lines. A reverse/check valve is fitted to hold downstream pressure if the supply is interrupted, and the round pressure gauge on a psi scale lets you read and set outlet pressure directly. The regulation range is 0.15-0.9 MPa (20-130 psi) with a maximum inlet pressure of 1.0 MPa (145 psi), and the unit operates from -5 to 70 C in non-freezing conditions. No mounting bracket is included in this version.
This is a genuine AirTAC part from the GFR300 series, one of four sizes (200/300/400/600) covering ports from 1/8 to 1 inch, with manual or automatic drain, 40 um or 5 um filtration, and MPa, psi or bar gauge scales available across the range. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and check the sizing against your application before ordering.
| Model | GFR300C08JC2WGK AirTAC Filter Regulator G1/4, 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) |
Filter, regulate and hold pressure on the supply line feeding a directional-valve manifold on an automated assembly machine, with the check valve keeping the island pressurised during brief supply dips.
Condition the air feeding gauges, transducers and calibration rigs on a quality-control bench, where the 5 um element protects sensitive measuring devices from water and fine particles.
Regulate the air to cylinders and grippers on a packaging line, using the psi gauge to set consistent actuation pressure and the differential-pressure drain to keep condensate out of the mechanism.
Step up or down through the G-series sizes (200/300/400/600) to match the port and flow path your line needs; this unit is the size-300 body on a G1/4 connection. Choose the drain to suit access: differential-pressure (as here) for hands-off condensate removal, automatic for continuous duty, or manual where you inspect the bowl on a schedule. The 5 um element in this configuration suits air going to sensitive valves and instruments; the standard 40 um element is fine for general shop-air protection. Gauge scale (MPa, psi or bar) and thread (PT standard, with G and NPT as order options) are decodable choices, and a bracket can be specified where panel or wall fixing is wanted. Flow is published as curves, not a single rating, so send us your application details and we will confirm the sizing 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 this series as curves rather than a single rated figure, so no single number would be honest. Send us your line pressure, downstream demand and port size, and we will confirm the flow from the datasheet and check the sizing against your application before you order.
The W in the code GFR300C08JC2WGK selects the 5 um filtration grade; the catalogue default for the GFR300 is 40 um. The finer element is the right choice when the air feeds sensitive valves, instruments or cylinders that need cleaner air than general shop-air protection provides.
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.