The AirTAC GFR30008JC1WTK AirTAC Filter Regulator NPT1/4 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 GFR30008JC1WTK is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure steady. This configuration is built on the 300 size with a 1/4 in NPT port, fitted with the 5 um filter element (code W) for finer filtration than the standard 40 um grade. Pressure is adjusted anywhere in the 0.15-0.9 MPa (20-130 psi) range, read on the round MPa gauge supplied. The bowl drains by differential pressure, so collected condensate is expelled automatically whenever the pressure differential across the element is high enough - no daily manual draining. A reverse/check valve is fitted, and the unit is ordered without a mounting bracket. The polycarbonate bowl suits a maximum inlet pressure of 1.0 MPa (145 psi) and a non-freezing ambient of -5 to 70 C.
This is a genuine AirTAC part. The GFR family spans the 200, 300, 400 and 600 sizes with ports from 1/8 to 1 in, a choice of drain type, 40 um or 5 um elements, gauge styles and scales, optional check valve, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figure for your application before ordering.
| Model | GFR30008JC1WTK AirTAC Filter Regulator NPT1/4 |
|---|---|
| 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, MPa 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. |
| 1 | Gauge scale: MPa. 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) |
Feeds cleaned, regulated air to the pneumatic clamps and tool-change cylinders on a CNC machining centre, with the 5 um element protecting fine valve spools from particulate carryover.
Sits at the drop point of a packaging line, filtering condensed water out of the supply and holding a steady set pressure to the conveyor's stopper and pusher cylinders so cycle timing stays repeatable.
Conditions the air feeding gripper valves on a robotic welding cell: the check valve holds the set pressure if upstream supply dips, and the differential-pressure drain keeps condensate off the gripper circuit.
Start with the port step: the 300 size carries 1/4 in ports, and the next size up or down (400 or 200) changes both the port and the flow capacity, so pick the size that matches your line's air demand - we will confirm the flow curve against your consumption before you order. This unit already carries the 5 um element; if your application tolerates coarser filtration, the standard 40 um grade is available in the same body. Drain type is a real choice: differential-pressure (this unit) self-drains with the pressure differential, automatic drain empties continuously, and manual drain suits infrequently attended points. Gauge options are the embedded square gauge or an external round gauge, in MPa, psi or bar scales - this unit ships with the round MPa gauge. Thread is NPT here; PT (standard) and G (BSPP) are orderable alternatives. A mounting bracket can be added if you want panel or wall fixing, and the K option adds a reverse/check valve, which this unit has.
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, not as a single rated number, so we do not quote a l/min or SCFM figure. Send us your line pressure and air consumption and we will confirm the correct sizing from the datasheet curves on request before you order.
The W in the code selects the 5 um filter element in place of the standard 40 um grade, for finer protection of downstream components, and the K code fits a reverse/check valve that holds downstream pressure if the upstream supply drops. Both are catalogue options on the GFR300; the standard 40 um, no-check-valve build is available if you prefer it.
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.