The AirTAC GFR300C10MLF2WT AirTAC Filter Regulator NPT3/8 5 um 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 GFR300C10MLF2WT is an AirTAC GFR-series filter regulator: a 5 um filter element and a pressure regulator combined in one body, so water and particulate are removed and downstream pressure is set with a single unit. This size 300 configuration has a 3/8 in NPT port, a metal bowl with manual drain, a low-pressure type regulator, an embedded square gauge reading in psi, and a mounting bracket. 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, with a choice of manual, automatic or differential-pressure drains, 40 um standard or 5 um (W) filtration, square or external round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so we confirm the datasheet and flow figures for your application on request.
| Model | GFR300C10MLF2WT AirTAC Filter Regulator NPT3/8 5 um |
|---|---|
| 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) |
Point-of-use preparation ahead of a directional valve bank: the 5 um element keeps scale and pipe rust out of the valves while the low-pressure regulator holds a gentle, stable supply to the actuators.
Workholding clamps that must close at a low, repeatable pressure rather than full line pressure: the low-pressure type regulator sets the clamp force while the filter protects the clamping cylinder and check hardware.
A dedicated drop at a paint or coating booth where the gun circuit runs below normal shop pressure: the unit filters moisture and particulate from the drop and regulates the atomizing air down to the set point.
Size and port step up together: sizes 200 to 600 cover 1/8 in to 1 in ports, so pick the size whose flow curve covers your air demand. This unit is the low-pressure type, intended for circuits set below the standard regulator's usual range; the exact regulation range for this variant is not published, so confirm it with us. The 5 um (W) element suits finer pneumatic components and instruments, while the 40 um standard element suits general shop air. The manual drain means the bowl is emptied by hand on a routine; choose automatic or differential-pressure drain if the unit is hard to reach. The embedded square gauge here reads in psi; MPa and bar scales and an external round gauge are options. The thread on this code is NPT; PT is the standard and G is also an order option. A mounting bracket is included. Before ordering, ask us to confirm sizing against the flow curves for your application.
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 the GFR series as curves, not as a single rated figure, so we do not quote a number here. Tell us your working pressure and air demand and we will confirm the flow from the datasheet for this exact model on request.
Manual drain (code M) means the bowl is emptied by hand on a routine, which suits units mounted where they are easy to reach as part of normal maintenance. If the unit sits in an awkward spot or the line runs unattended, order the automatic (A) or differential-pressure (blank) drain variant instead. Note that the drain choice also affects the regulator's adjust range on standard-type units; for this low-pressure variant, confirm the range with us.
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.