The AirTAC GFR30008JC3WT 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 GFR30008JC3WT is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body, so one unit does the job of a filter and a regulator. This configuration has a 1/4 in NPT port, a fine 5 um filter element (the W grade, one step finer than the 40 um standard), a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the bowl is high enough, a round external pressure gauge scaled in bar, and no mounting bracket. The pressure bowl on this size is polycarbonate, with a clear view of the condensate level.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and with choices of drain type, filter grade, gauge style and scale, thread form (PT standard, G and NPT as order options) and bracket. Max inlet pressure is 1.0 MPa (145 psi), the standard-type regulator adjusts from 0.15 to 0.9 MPa (20-130 psi) with this differential-pressure drain, and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR30008JC3WT 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, bar 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. |
|---|---|
| 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. |
| 3 | Gauge scale: bar. 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. |
| (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 · PT1/4" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Mounted at the drop feeding a CNC machine's pneumatic valves and clamps, it strips water and fine particles from the shop air and holds a steady regulated pressure so clamping and tool-change cylinders repeat consistently.
Installed ahead of the cylinder banks on a carton-forming and sealing conveyor, it keeps condensate and 5 um-level particulate out of the directional valves while holding the set pressure the sealing actuators were sized for.
Fitted at the point where the drop reaches a pick-and-place robot's gripper circuit, it delivers clean, dry, finely filtered air and a stable regulated supply so grip force stays repeatable through the shift.
Start with the port and size step: this unit is size 300 with a 1/4 in NPT port; if your line's air demand sits near the top of what a 1/4 in supply can carry, step up to size 400 rather than oversizing the regulator setting. Choose the drain to match maintenance access: differential-pressure (as fitted here) needs no routine attention, automatic drains continuously, and manual drain suits infrequently visited installations where someone can open the drain valve on a schedule. Pick the filter grade by what the downstream equipment tolerates: 40 um is the standard element and 5 um (this unit, code W) suits finer pneumatic components. Gauge options are the embedded square gauge or an external round gauge, scaled in MPa, psi or bar (this unit: round, bar). Thread is PT as standard, with G (BSPP) and NPT as order options - this unit is NPT. Brackets are optional on GFR (this unit ships without one).
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated figure, so we do not quote a flow number. Send us your application's demand 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 performance curves rather than a single rated figure, so we do not quote one number. Tell us your working pressure and the air demand of your circuit, and we will confirm the sizing from the datasheet curves on request before you order.
The W code in the model specifies the fine 5 um element, one grade finer than the 40 um standard. Choose 5 um when the downstream components - precision valves, grippers, gauges or instrumentation - tolerate less particulate; choose 40 um where general plant air protection is enough. Both grades are catalogue options across the GF, GFR, GFC and GC families.
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.