The AirTAC AirTAC GFR300-10T Filter Regulator NPT 3/8 in, Manual Drain 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 GFR300-10T is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This configuration has 3/8 in NPT ports, a polycarbonate bowl with a manual drain and a 40 um standard filter element, a round pressure gauge reading in MPa, and a reverse/check valve (code K) fitted. Maximum inlet pressure is 1.0 MPa (145 psi), the regulating range is 0.05-0.9 MPa (7-130 psi), and the working temperature is -5 to 70 C (non-freezing). A mounting bracket is included.
This is a genuine AirTAC part. The GFR series is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, and with options including automatic or differential-pressure drains, a 5 um filter element (code W), an embedded square gauge or an external round gauge with MPa, psi or bar scales, and G (BSPP) or NPT threads in place of the PT standard. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | AirTAC GFR300-10T Filter Regulator NPT 3/8 in, Manual Drain |
|---|---|
| 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 | 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, 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. Standard type, regulating 0.05 - 0.9 MPa (7 - 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. |
|---|---|
| 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)). |
| (blank) | Standard 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. |
| 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) |
Feeding clean, regulated air to carton-sealing and wrapping machines on a packaging line, with the manual drain emptied as part of routine shift checks.
Regulating supply pressure to a pneumatic press or clamping fixture, with the fitted check valve guarding against reverse flow through the unit.
Conditioning air at the drop feeding spray guns and air tools in a paint or finishing cell, with the 40 um element catching particulate ahead of the regulator.
Choose the size by port and flow: size 300 carries the 3/8 in port here, and larger sizes step up in port and flow capacity. Drain type matters: this unit has a manual drain, which you open by hand to discharge collected water, while automatic and differential-pressure drains are available in the same series. The standard element is 40 um; specify 5 um (code W) where finer filtration is needed. The fitted round gauge reads in MPa; psi or bar scales and the embedded square gauge are options. This unit has NPT threads; PT is the standard and G (BSPP) is also available to order. A mounting bracket is included. Because flow is published as curves, not 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 the GFR series as curves, not a single rated figure, so we do not quote a number here. Tell us your application and we will confirm the datasheet and check the sizing for you before you order.
This unit has a manual drain: you open it by hand to discharge collected water, which suits duties checked on a regular schedule. Automatic and differential-pressure drains are available in the same series if you prefer unattended drainage.
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.