The AirTAC GFR30008JC2WTK AirTAC Filter Regulator NPT1/4, 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 GFR300 series combines water-and-particulate filtration with pressure regulation in a single body, so one component both cleans the air and holds your downstream pressure steady. This configuration is the 300 size with a 1/4 in NPT port, fitted with a fine 5 um filter element (code W) for applications that need cleaner air than the standard 40 um grade, a differential-pressure drain that bleeds condensate automatically as pressure drop builds, a round external gauge reading in psi, and a built-in reverse/check valve that holds downstream pressure when the supply is lost. No mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi), the regulation range is 0.15-0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl gives a clear view of condensate level.
This is a genuine AirTAC part. The GFR family is available in 200, 300, 400 and 600 sizes with port sizes from 1/8 to 1 inch, a choice of 40 um or 5 um filtration, differential-pressure, automatic or manual drains, embedded square or external round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR30008JC2WTK AirTAC Filter Regulator NPT1/4, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT thread) |
| Filtering grade | 5 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 — 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. 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. |
|---|---|
| 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)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (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. |
| T | NPT 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) |
Feeding clean, regulated air to the tool-change clamps and pneumatic actuators on a machining centre, where the 5 um element protects close-tolerance valves from particulate and the check valve holds clamp pressure if the shop supply drops.
Regulating supply to carton-sealing and diverting cylinders on a packaging conveyor, with the fine filter keeping moisture and debris out of the seal-jaw cylinders and the psi gauge letting operators set line pressure at a glance.
Supplying test-rig clamps and small pneumatic presses in a lab or pilot line, where the 5 um grade and steady regulated pressure protect sensitive instrumentation, and the check valve prevents fixture pressure loss during supply interruptions.
Sizing starts with the port and size step: this unit is the 300 size with a 1/4 in NPT port, one step up from the 200/1/8 in class - choose the next size up if your line may grow. The 5 um element (code W) suits air tools, instruments and valves that need finer filtration than the standard 40 um grade; the trade-off is a faster-clogging element, so check your upstream drying. The differential-pressure drain is the zero-touch default; choose automatic (A) for unattended drains or manual (M) where you want full control. The round psi gauge matches US-style reading; square embedded gauges and MPa or bar scales are alternatives. NPT thread is the order option here - PT is the catalogue standard and G (BSPP) is also available. The K code adds a check valve, useful where downstream pressure must be held. No bracket is fitted; brackets can be ordered for panel mounting. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering.
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 GFR300 series as curves, not as a single rated figure, so we do not quote a l/min, m3/h or SCFM number. Send us your application details and we will confirm the flow and sizing figures from the datasheet on request before you order.
The W code in the model selects the optional 5 um filter element instead of the 40 um standard, for finer protection of downstream equipment. The K code adds a reverse/check valve that holds downstream pressure when the upstream supply is interrupted. Both are order-time choices on the GFR300; the drain on this unit is the differential-pressure type, which discharges condensate automatically as pressure drop builds.
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.