The AirTAC GFR30008AJNTK AirTAC Filter Regulator NPT1/4 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 GFR30008AJNTK is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has 1/4 in NPT ports, a 40 um filter element, an automatic drain that expels collected condensate without manual attention, and a standard regulator adjustable from 0.15 to 0.9 MPa (20-130 psi). A reverse/check valve is fitted, no pressure gauge is supplied, and no mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The polycarbonate (PC) bowl suits the 300 size.
This is a genuine AirTAC part. The GFR series is available in sizes 200, 300, 400 and 600, with a choice of PT, G or NPT thread, differential-pressure, automatic or manual drain, and a 40 um standard or 5 um (code W) filter grade. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing or any datasheet figure for your application before ordering.
| Model | GFR30008AJNTK AirTAC Filter Regulator NPT1/4 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT thread) |
| Filtering grade | 40 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Not fitted |
| 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". |
| A | Drain: Automatic 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. |
| N | No pressure gauge (N). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Point-of-use preparation at assembly stations: the filter stage strips water and swarf from the shop-air drop before it reaches air tools and clamping fixtures, while the regulator holds the station pressure the fixture designer specified.
Feeding the machine's pneumatic circuit - tool-change cylinders, chip doors and work clamps - with cleaned air at a fixed set point, so valve and cylinder behaviour stays repeatable across shifts.
Conditioning the air that drives diverters, pushers and sealing cylinders on a packaging conveyor, with the automatic drain handling condensate on lines that run unattended between operator rounds.
The real, decodable choices in this series are the size and port step (200/300/400/600, matched to the flow your line needs), the drain type (differential-pressure as the default, automatic as here, or manual - note the manual-drain version widens the adjustment range down to 0.05 MPa / 7 psi), the filter grade (40 um standard, 5 um with code W), the gauge (none fitted on this model; an embedded square gauge or external round gauge with MPa, psi or bar scale is available), the thread (PT is the standard; G and NPT are order options, NPT on this unit) and the bracket. Flow is published as curves, not a single rating, so send us your application details and we will confirm sizing against 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 this series as curves, not as a single rated figure, so we do not quote a number here. Tell us your line's flow and pressure requirement and we will confirm the correct size against the datasheet on request.
The automatic drain (code A) expels collected condensate from the bowl without manual attention. The series also offers the differential-pressure drain (default) and a manual drain (code M); note that the manual-drain version widens the regulation range to 0.05-0.9 MPa (7-130 psi). This unit also carries a reverse/check valve (code K), has no gauge (code N) and no bracket (code J).
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.