The AirTAC GFR30008ALC2K AirTAC Filter Regulator PT1/4, 1/4 in 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 PT1/4" ports, a automatic 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 GFR30008ALC2K is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body, so one 1/4 in (PT1/4) unit does both jobs in the air-prep position. This configuration is the size-300 GFR with an automatic drain that ejects collected condensate without manual attention, a 40 um standard filter element, the low-pressure regulator type, a round pressure gauge reading in psi, and a reverse/check valve fitted to hold downstream pressure if the supply drops. Maximum inlet pressure is 1.0 MPa (145 psi), the polycarbonate bowl suits -5 to 70 C (non-freezing) service, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, a 5 um optional element (code W), embedded square or external round gauges with MPa, psi or bar scales, and G or NPT thread options to order. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR30008ALC2K AirTAC Filter Regulator PT1/4, 1/4 in |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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. |
|---|---|
| 08 | Port size PT1/4". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| A | Drain: Automatic drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 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. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT1/4" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeding the valve manifold of a pneumatic pick-and-place cell on an assembly line: the 40 um element stops particulate reaching the directional valves, the regulator holds a steady low-pressure supply for gentle gripper action, and the automatic drain keeps condensate out of the circuit without operator rounds.
Mounting at the air inlet of a cartoning or wrapping machine: one 1/4 in body filters the shop air and regulates it for the machine's low-pressure actuators, the check valve holds the setting through brief supply dips, and the psi gauge lets the line technician verify the set point at a glance.
Conditioning air on individual loom supply drops in a weaving shed: the automatic drain copes with the heavy moisture load typical of continuous compressed-air lines, the low-pressure regulator type matches loom actuation pressures, and the included bracket fixes the unit cleanly to the machine frame.
Start with the port step: this unit is size 300 with a 1/4 in PT port; step up to size 400 or 600 when downstream demand calls for a larger port, and match the thread to your piping - PT is the standard here, with G (BSPP) and NPT available as order options. For the drain, automatic (this unit) suits points that are not checked daily; manual drain suits attended stations; the differential-pressure default triggers on the pressure drop across the element. The 40 um element is the standard grade; specify the W code for 5 um where finer filtration is needed. Gauge scale (MPa, psi or bar - this unit reads psi) and the reverse/check valve (fitted here, code K) are the remaining decodable choices.
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated number, and the exact regulation range of the low-pressure type is not stated in the published data. Send us your line pressure, required downstream setting and air demand, and we will confirm the datasheet figures and the right size before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR family as performance curves rather than a single rated figure, so there is no one l/min or SCFM number we can honestly quote for this 1/4 in unit. Tell us your inlet pressure and the air demand of your equipment, and we will confirm the datasheet curve and check the sizing against your application before you order.
The L in GFR30008ALC2K marks the low-pressure regulator type, intended for downstream settings below what the standard type targets. The exact adjustment range for the low-pressure GFR is not stated in the published data, so we do not quote a figure here - send us your required downstream pressure and we will confirm suitability from the datasheet. Everything else about the unit is fixed by the code: automatic drain, 40 um element, round psi gauge, check valve fitted, PT1/4 port.
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.