The AirTAC GFR30008LC2WK AirTAC Filter Regulator PT1/4, 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/4" 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 GFR30008LC2WK 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 the low-pressure type with a 5 um filter element (code W), a differential-pressure drain that bleeds condensate automatically as flow passes through, a fitted reverse/check valve that holds downstream pressure when the supply drops, and an external round gauge reading in psi. It connects at PT1/4 (1/4 in) and includes a mounting bracket.
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, standard or 5 um filtration, manual, automatic or differential-pressure drains, embedded square or external round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm datasheet figures for your application before ordering.
| Model | GFR30008LC2WK AirTAC Filter Regulator PT1/4, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (PT thread) |
| Filtering grade | 5 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 | Differential-pressure 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". |
| (blank) | Drain: Differential-pressure 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. |
| W | Filtering grade 5 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" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
On a fixture-clamping line that holds workpieces at reduced pressure, this filter regulator cleans the supply, holds a stable low set-point, and the check valve keeps the clamp from venting if the main supply dips.
Feeding cylinders and air-driven diverters on a packaging line, the 5 um element protects valve spools from particulate and water while the regulator keeps actuator speed consistent at a gentle set pressure.
At a bench drop on a lab or test-house air ring main, the unit filters the house supply to 5 um, regulates it down to the low pressure the bench apparatus needs, and the psi gauge gives a clear local reading.
Choose the size and port step against the air demand of the circuit - this 300-size unit takes a 1/4 in PT port, and larger sizes carry larger ports and more flow. This unit is the low-pressure type, intended for circuits that work below the standard regulator band, so confirm your working pressure suits it. Filtration here is the finer 5 um element (code W) instead of the 40 um standard - pick 5 um where downstream valves, cylinders or instruments need cleaner air. The drain is differential-pressure (the default); automatic (A) and manual (M) drains are orderable alternatives. The gauge fitted is external round, psi scale; square embedded gauges and MPa or bar scales are options. Thread is PT as standard, with G (BSPP) and NPT available to order, and a bracket is included. Flow is published as curves, not a single rating, so send us your flow and pressure requirements and we will confirm sizing from the datasheet 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 series as curves rather than a single rated figure, so we do not quote a l/min or SCFM number. Send us your required flow and working pressure and we will confirm the sizing from the datasheet on request.
The L code makes this a low-pressure type regulator, intended for circuits whose working pressure sits below the standard regulator band; the exact adjustment range for this variant is not published, so confirm it with us. The K code means a reverse/check valve is fitted, which holds downstream pressure if the upstream supply is lost. This unit also carries the W code for the finer 5 um element instead of the 40 um standard.
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.