The AirTAC GFR30010MLJF1TK AirTAC Filter Regulator NPT3/8 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 PT3/8" 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 AirTAC GFR30010MLJF1TK is a size-300 filter regulator: water and particulate filtration plus pressure regulation combined in one body. This configuration has 3/8 in NPT ports, a 40 um standard filter element, a manual drain bowl in polycarbonate, and a low-pressure regulator fitted with an embedded square gauge scaled in MPa. A reverse/check valve is included, and the unit is supplied without a mounting bracket. It handles compressed air at up to 1.0 MPa (145 psi) inlet and operates from -5 to 70 C in non-freezing conditions.
This is a genuine AirTAC part from the GFR range, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch. Drain types, filter grades (40 um standard, 5 um optional), gauge styles and scales, thread options and brackets are all available across the series. Flow is published by AirTAC as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR30010MLJF1TK AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (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, 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. 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. |
|---|---|
| 10 | Port size PT3/8". 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. |
| 1 | Gauge scale: MPa. 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 · PT3/8" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
On a cartoning or wrapping line, this filter regulator cleans the shop air of water and debris and holds a steady low-pressure supply to the cylinder-driven sealing and folding motions, with the manual drain bled during shift checks.
Feeding clamps and swing cylinders on a CNC fixture circuit, the unit removes condensate and particles before the valves, regulates the clamp pressure to the level the fixture was set up for, and the check valve holds the circuit if upstream supply dips.
In a plant area running reduced-pressure air to actuators and air-operated instruments, the low-pressure regulator type matches the circuit requirement, while the 40 um element and manual-drain bowl keep the downstream loop clean and dry.
Start with the port step: this unit is size 300 with 3/8 in NPT ports; smaller and larger sizes (200/400/600) step port and flow capacity up or down, so match the size to the air demand of the circuit. Drain choice matters: this version has a manual drain, which suits attended installations where an operator can bleed the bowl; automatic and differential-pressure drains are available if the unit will run unattended. The 40 um element is the standard grade; specify the W code for a 5 um element where finer filtration is needed. The embedded square gauge here reads in MPa; psi and bar scales and an external round gauge are options. Thread is NPT on this unit - PT (standard) and G (BSPP) versions can be ordered - and a mounting bracket can be added if the J (no bracket) version does not suit your panel. Note that this is the low-pressure regulator type; its exact adjustment range is not published, so confirm it with us. Because AirTAC publishes flow only as curves and not as 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 this series as performance curves rather than a single rated figure, so no rated flow number is stated here. Tell us your application and we will confirm the relevant flow and datasheet figures on request before you order.
The M in the code specifies a manual drain: condensate collected in the polycarbonate bowl is released by hand, which suits attended installations on a maintenance routine. If the unit will run unattended, the same size is available with an automatic drain (code A) or the differential-pressure drain (blank code); the filter grade can also be changed from the standard 40 um element to a 5 um element with the W code.
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.