The AirTAC GFR300C08ANWTK 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 AirTAC GFR300C08ANWTK is a 300-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is threaded NPT 1/4 in, carries a 5 um filter element, and drains condensate automatically, so the bowl empties itself as liquid collects. The standard regulator adjusts from 0.15-0.9 MPa (20-130 psi), maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing). A reverse/check valve is fitted, so downstream pressure is held if the upstream supply drops. No pressure gauge is fitted on this variant, and a mounting bracket is included. On the 300 size the bowl is PC (polycarbonate).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with a choice of ports, thread options (PT standard, G and NPT to order), drain types, 40 um or 5 um filtration, gauge options and check-valve variants. Flow figures are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300C08ANWTK 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) |
Feeding air cylinders and grippers on an indexing assembly table: the 5 um element keeps fine debris out of directional valves, and the regulator sets a stable clamp pressure. The check valve holds the circuit if shop air dips mid-cycle.
Supplying the air nozzles that eject or steady bottles on a filling line: filtered, regulated air at a set pressure gives repeatable blast force, and the automatic drain copes with condensate from a humid bottling hall without daily attention.
Conditioning the air feed to a spray gun in a finishing booth: the 5 um grade reduces particulate in the air stream and the regulator lets the painter set atomising pressure. The check valve prevents backfeed through the regulator when the supply is shut off.
Step up or down through the GFR sizes (200/300/400/600) to match the port and the flow your line needs; this unit sits at the 300 size on a 1/4 in NPT thread. Choose the drain to suit access: automatic (as fitted here) where the unit is hard to reach, manual where an operator walks past, or differential-pressure as the default. Filtration is 40 um standard; the 5 um element fitted here suits finer downstream equipment. Gauge and scale (MPa, psi or bar) can be specified on units where a gauge is wanted - this variant ships without one. Thread is PT as standard with G (BSPP) and NPT as order options, and a bracket is included.
One honest note on sizing: AirTAC publishes flow as curves, not as a single rated figure, so we do not quote a flow number here. Send us your application details and we will confirm the datasheet curve and sizing 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 as performance curves rather than a single rated figure, so we do not quote one number here. Tell us your inlet pressure and the flow your application needs, and we will confirm the datasheet curve and check the sizing for you on request.
In the code GFR300C08ANWTK, the A position selects the automatic drain, which ejects collected condensate by itself - useful where the unit is mounted out of easy reach. The N position means no pressure gauge is fitted; if you want to read the regulated pressure directly, ask us about GFR300 variants specified with a gauge and your preferred scale (MPa, psi or bar).
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.