The AirTAC GFR300-10 AirTAC Filter Regulator NPT 3/8 in, 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 GFR300-10 is a filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure at your setpoint. This configuration is the 300 size with a 3/8 in NPT thread, a 40 um standard filter element, a polycarbonate bowl with manual drain, the low-pressure regulator type, a round external gauge with psi scale, and a reverse/check valve fitted. 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, ordered under configuration code GFR30010MLC2TK. The GFR family runs from size 200 to 600 with ports from 1/8 to 1 in, and options for drain type, 5 um filtration (code W), gauge style and scale, G (BSPP) or NPT thread, and bracket choice. The exact adjustment range of the low-pressure type is not published in our data - ask us to confirm it. Flow is published as curves rather than a single rating, so we confirm sizing and datasheet figures on request.
| Model | GFR300-10 AirTAC Filter Regulator NPT 3/8 in, 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 — round, psi 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. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. 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. |
| 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) |
Filtered, regulated air for glue-head and flap-tuck cylinders that run below standard line pressure. The 40 um element strips water and particulate from the glue-head supply, and the manual drain suits a shift-end blowdown routine.
Point-of-use filter regulator on a lab compressed-air ring feeding bench-top pneumatic devices that operate at low setpoints. The psi gauge reads in familiar units, and the fitted check valve blocks reverse flow back toward the regulator.
Pusher and gate cylinders on a bottling conveyor take filtered air at a low, stable setpoint. The polycarbonate bowl with manual drain is emptied during changeover cleaning, and the bracket mounts the unit at the machine frame.
Step through the 200/300/400/600 sizes to match the port and the flow your line needs; the 300 size with its 3/8 in NPT port sits mid-range. Choose the drain to suit attendance: manual (this unit) for scheduled draining, or automatic / differential-pressure where the bowl is not visited regularly. The 40 um element is standard; specify 5 um (code W) only where downstream equipment demands finer filtration. Gauge scale is selectable (MPa, psi or bar) and this unit carries the round external gauge reading in psi. PT is the standard thread; G (BSPP) and NPT are order options, and this unit is ordered with NPT. Flow is published as curves, not a single rated figure, so send us your demand 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 family as curves, not a single rated figure, so we do not quote a number here. Send us your downstream demand and operating pressure and we will confirm sizing against the datasheet on request.
This configuration has a manual drain: the bowl drain is opened as part of a scheduled routine. If the installation is not visited regularly, the same size is available with an automatic or differential-pressure drain - tell us and we will quote the variant. The 40 um element is standard and a 5 um element (code W) is also an option.
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.