The AirTAC GFR300C08MLC1TK AirTAC Filter Regulator NPT1/4 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 GFR300C08MLC1TK is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single compact body. This size 300 unit is threaded NPT1/4 (1/4 in), carries a 40 um standard filter element, and uses a manual drain on the polycarbonate bowl, so an operator opens the drain valve to expel collected condensate. It is the low-pressure type, is fitted with an external round MPa gauge for setpoint reading, includes a reverse/check valve, and ships configuration-wise with the mounting bracket 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 is offered in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and with choices of drain type, 40 um or 5 um filtration, gauge style and scale, PT, G or NPT thread, and low-pressure or standard regulation. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C08MLC1TK AirTAC Filter Regulator NPT1/4 |
|---|---|
| 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) |
Supplies filtered, regulated air to clamp cylinders on a fixture line, with the low-pressure regulation suited to circuits that hold parts gently and the manual drain bled at shift start.
Conditions the 1/4 in air drop feeding a tool-change or workholding actuator on a compact CNC cell, removing water and chips-carried particulate before the directional valve.
Feeds diverter and pusher cylinders on a packaging conveyor, with the round MPa gauge letting operators verify setpoint at a glance and the check valve holding downstream pressure.
Start with the port step: this unit is size 300 with a 1/4 in NPT thread, which suits lines plumbed at 1/4 in; step up to size 400 or 600 if your circuit needs a larger port. Choose the drain to match attendance: this configuration has a manual drain, best where an operator can bleed the bowl routinely; automatic or differential-pressure drains suit unattended installations. Filtration is the 40 um standard element; specify the W option if the application needs 5 um. The fitted round gauge reads in MPa; psi and bar scales are available, and an embedded square gauge is the standard alternative. Thread is NPT here, with PT and G (BSPP) available to order, and the bracket is included.
Because AirTAC publishes flow as curves rather than a single rated figure, send us your application details and we will confirm sizing against the datasheet before you order. The exact setpoint range of this low-pressure type should likewise be confirmed on request.
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 this series as curves rather than a single rated number, so there is no one l/min or SCFM figure we can quote honestly. Tell us your application and we will confirm the sizing from the datasheet on request before you order.
The M in the code specifies a manual drain: an operator opens the drain valve on the bowl to expel collected condensate, which suits attended installations; automatic and differential-pressure drains are available for unattended ones. The K specifies a fitted reverse/check valve, which helps hold downstream pressure.
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.