The AirTAC GFR30008MLJF2T AirTAC Filter Regulator NPT1/4 Low-Pressure 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 manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR30008MLJF2T is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This configuration is a 300-size unit with a 1/4 in NPT port, a manual drain bowl in polycarbonate, a standard 40 um filter element, and the low-pressure regulator type. The embedded square gauge is fitted and reads in psi, and the manual drain means an operator opens the bowl drain to expel collected condensate, which suits installations where the unit is checked as part of a routine walk-round. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and with choices of drain type, 40 um or 5 um filtration, gauge scale, thread (PT standard, G and NPT as order options) and bracket. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR30008MLJF2T AirTAC Filter Regulator NPT1/4 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, psi 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. 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 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. |
| (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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Filtered and regulated air to clamp cylinders on a CNC fixture, where the low-pressure regulator type holds the clamping circuit at the reduced pressure the fixture designer specifies and the 40 um element keeps debris out of the clamping valves.
A point-of-use filter regulator feeding the actuator circuit of a cartoning or wrapping machine, with the square psi gauge giving operators a visible line pressure reading and the manual drain bled during shift-start checks.
Conditioning the air supply to a pneumatic control panel or positioner loop, where clean, moisture-reduced air at a stable low setpoint protects the pilot components and the psi gauge supports routine verification.
Start with the port step: this unit is 300 size with a 1/4 in NPT port, so match it to the air line it feeds and confirm the size against the flow your circuit needs - we can check the published flow curves against your demand before you order. The manual drain on this model is the right choice when someone is on site regularly to bleed the bowl; if the unit will be left unattended, ask about the automatic or differential-pressure drain variants. The 40 um element is the standard grade for general air preparation; the 5 um (W) element is available where finer filtration is wanted. The fitted square gauge reads in psi; MPa and bar scales and an external round gauge are alternatives. Thread options beyond this NPT version are PT (standard) and G. A mounting bracket is not included with this code but is available on other variants. Note this is the low-pressure regulator type, so its adjustment range differs from the standard type - confirm the exact range with us before ordering.
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 this family as curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Send us your line size and air demand and we will confirm the sizing from the datasheet on request before you order.
The M in the code sets the manual drain: condensate collected in the polycarbonate bowl is released by opening the drain, which suits units checked during routine maintenance rounds. The L sets the low-pressure regulator type, whose adjustment range differs from the standard type - the exact range is not published on our sheet, so confirm it with us on request. If you need unattended drainage or standard-range regulation, other codes in the GFR300 series carry those options.
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.