The AirTAC GFR300C08ANTK AirTAC Filter Regulator, NPT1/4, Auto Drain 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 GFR300C08ANTK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This size 300 unit is threaded NPT1/4 (1/4 in), carries a 40 um filter element, and drains condensate automatically, so the bowl empties itself during operation without manual attention. The standard regulator adjusts between 0.15 and 0.9 MPa (20-130 psi), a reverse/check valve is fitted to hold the downstream setting, and a mounting bracket is included. No gauge is supplied with this configuration. 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 size is polycarbonate.
This is a genuine AirTAC part. The GFR filter-regulator family is published in sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, PT as the standard thread and G or NPT as order options, a choice of differential-pressure, automatic or manual drain, a 5 um element option, gauge and scale choices, and a low-pressure variant. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and flow figures for your application before ordering.
| Model | GFR300C08ANTK AirTAC Filter Regulator, NPT1/4, Auto Drain |
|---|---|
| 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 the pneumatic cylinders on a carton-forming or wrapping machine: clean, dry air at a fixed setting keeps the sealing and clamping strokes repeatable, and the automatic drain copes with condensate on a line that runs unattended through shifts.
Supplying the air cylinders that push products between conveyor lanes in a distribution centre. The regulator holds one setting for all the divert stations downstream, the 40 um element protects the valve spools, and the check valve helps the circuit hold its setting.
Point-of-use preparation for a robot gripper circuit on an assembly cell: filtered and regulated air at the cell, with the automatic drain removing accumulated water without a technician opening the bowl, and the included bracket mounting the unit at the cell frame.
Start with the port step: this unit is 1/4 in NPT in size 300; step up to size 400 or 600 if your line needs larger ports and more flow, or down to size 200 for compact points of use. Choose the drain to match maintenance reality: automatic drain (this unit) suits unmanned or hard-to-reach installations, manual drain suits attended stations, and differential-pressure drain is the catalogue default. The 40 um element is standard; specify the W code for a 5 um element where finer particulate capture matters. Gauges, scale units, PT versus G/NPT thread and the bracket are all selectable across the family; this configuration ships with a bracket and no gauge.
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated number, so we do not quote a flow figure here. Send us your application details and we will confirm the sizing against the datasheet curves 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 GFR family as curves, not as a single rated figure, so we do not state a flow number here. Tell us your application and we will confirm the flow figures from the datasheet on request before you order.
This configuration carries the A code, so the bowl drains condensate automatically during operation. The catalogue also offers manual drain (code M) for attended stations and differential-pressure drain (no code) as the default. Choose automatic where the unit is mounted in a hard-to-reach spot or runs unattended.
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.