The AirTAC GFR300C10MLJF2G AirTAC Filter Regulator G3/8 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 See datasheet 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 GFR300C10MLJF2G is a GFR-series filter regulator: one compact body that removes water and particulate from compressed air and holds downstream pressure at a set point. This size 300 unit is threaded G3/8 (G/BSPP) and carries the standard 40 um filter element. The M in the code means manual drain - condensate collects in the bowl until someone opens the drain valve, so it suits installations where the bowl is checked as part of normal rounds. The L means it is the low-pressure regulator type (the exact adjustment range is not published in our data); the F2 means an embedded square gauge reading in psi is fitted, and the J means 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.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options across the range include manual, automatic or differential-pressure drains, a 5 um (W) element, square or round gauges with MPa, psi or bar scales, G or NPT threads, brackets and a reverse/check valve. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and the datasheet for your application before ordering.
| Model | GFR300C10MLJF2G AirTAC Filter Regulator G3/8 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard 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. |
|---|---|
| C1 | Port size See datasheet. 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. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (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. |
| (blank) | PT 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C1 (two-unit set) |
Feeds clean, regulated low-pressure air to clamping cylinders on an assembly fixture. The 40 um element keeps pipe scale and condensate out of the clamp valves, the square psi gauge lets setters read the clamping set point directly, and the manual drain is bled during shift-start checks.
Sits at the air inlet of a packaging line to strip water and particulate before the directional valves and cylinders, while holding a steady supply pressure for consistent bag sealing and actuator stroke times. The single filter-regulator body saves panel space over separate units.
Serves spray guns and air-assist lines where work is done at low regulated pressures. The 40 um element protects the gun from water and dirt in the shop air, the psi gauge gives the operator a direct pressure reference, and the manual drain is emptied at end-of-day cleanup.
Size the unit against the air your machine actually uses: this code is size 300 with a G3/8 (BSPP) thread, and the family steps through 200/300/400/600 with ports from 1/8 to 1 inch. Pick the drain to match your maintenance routine - this unit is manual drain (code M), which needs someone to bleed the bowl, while automatic and differential-pressure drains are available on other codes. The 40 um element is the standard grade; specify W for 5 um where finer filtration is needed. The fitted square gauge reads psi, with MPa and bar scales and an external round gauge as options. Thread is G (BSPP) on this code - PT is the AirTAC standard and NPT is orderable - and this J-coded unit is supplied without a mounting bracket.
Two honest limits: the low-pressure (L) regulator's exact adjustment range is not published in our data, and flow for the whole family is published as curves, not a single rated number. Tell us your line pressure, set point and air demand and we will confirm the range and sizing from the AirTAC datasheet 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 filter-regulator flow as curves rather than a single rated figure, so there is no one number we can honestly quote for this unit. Send us your line pressure, set point and air demand and we will confirm the sizing from the AirTAC datasheet on request before you order.
Water and dirt separated by the 40 um element collect in the bowl until someone opens the drain valve to release them, so this code suits attended installations with routine checks. If the unit will run unattended, ask us about the automatic-drain or differential-pressure-drain versions of the same GFR300 filter regulator.
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.