The AirTAC GFR300C08MF1TK AirTAC Filter Regulator 1/4 in NPT 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 GFR300C08MF1TK is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady, in a single body. This size 300 unit is threaded 1/4 in NPT, carries a 40 um filter element, and drains its metal bowl by hand via the manual drain. Outlet pressure is set anywhere in the 0.05-0.9 MPa (7-130 psi) range and read on the embedded square gauge with an MPa scale (psi and bar scales are orderable). Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C non-freezing, a reverse/check valve is fitted, and the mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, PT thread as standard and G or NPT to order, plus a choice of differential-pressure, automatic or manual drains, 40 um standard or 5 um (W) filtration, and embedded square or optional external round gauges. Flow for this series is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application before you order.
| Model | GFR300C08MF1TK AirTAC Filter Regulator 1/4 in NPT |
|---|---|
| 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. |
|---|---|
| C0 | 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-C0 (two-unit set) |
Clean, regulated air for the seal cylinders and clamp actuators on a carton or blister packaging line, with the manual drain emptied at each shift check.
Point-of-use filter regulation ahead of a valve manifold on an automated assembly machine, keeping the supply pressure the manifold was set up for.
Water- and particle-free regulated air to spray guns and air-assisted applicators on a coating line, where steady pressure keeps the finish consistent.
The real choices on this family: step the size and port to suit the flow your line needs (200 through 600, 1/8 in to 1 in); pick the drain - differential-pressure as standard, automatic for unattended condensate removal, or manual as fitted here; choose 40 um standard filtration or 5 um (W) where finer cleaning matters; select the gauge scale (MPa, psi or bar) and embedded square versus optional external round; order PT, G or NPT thread; and include or omit the bracket.
One honest note on sizing: AirTAC publishes flow for this series as curves, not a single rated number, so send us your flow and pressure conditions and we will confirm the right size from the 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 flow for the GFR series as curves rather than a single rated figure, so we do not quote a l/min, m3/h or SCFM number here. Send us your required flow and working pressure and we will confirm the correct size and the datasheet figures for this unit on request.
This configuration uses a manual drain: someone opens the drain at the bottom of the bowl to release collected water, which suits stations that are checked regularly. If the unit sits where nobody tends it, order the automatic-drain (A) version instead; the catalogue default is differential-pressure drain. Manual-drain units also span the widest regulation range, from 0.05 MPa (7 psi) up to 0.9 MPa.
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.