The AirTAC GFR300C15MLF2TK AirTAC Filter Regulator NPT1/2 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 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 GFR300C15MLF2TK is an AirTAC GFR-series filter regulator: water-and-particulate filtration and pressure regulation combined in a single body. This size 300 unit is threaded 1/2 in NPT, uses a manual drain on its metal bowl, and carries the standard 40 um filter element. The regulator is the low-pressure type, a square pressure gauge reading in psi is fitted, a reverse (check) valve is included, and a mounting bracket is supplied. 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 spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options that include automatic, manual or differential-pressure drains, a finer 5 um element (code W), G or NPT threads in place of the PT standard, external round gauges with MPa, psi or bar scales, and bracket or no-bracket mounting. Flow for this model is published as a curve rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR300C15MLF2TK AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| 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) |
Placed ahead of the clamping fixtures on a stamping press line, this unit filters the shop air and holds a reduced, low-pressure setting for the clamps, with the fitted check valve as part of the downstream circuit.
Mounted at the drop of a packaging conveyor's air supply, it removes water and particulates before they reach the carton-forming cylinders and lets the line set one steady working pressure for all the actuators on that branch.
Installed on the air drop feeding a paint booth, the 40 um element strips water and debris before the gun, and the low-pressure regulator type suits finishing work that runs at reduced pressure rather than full line pressure.
Size 300 with a 1/2 in NPT port suits circuits plumbed at 1/2 in; step up to size 400 or 600, or down to 200, if your demand points elsewhere - we can check the published flow curves against your requirement. Drain choice matters: a manual drain needs an operator to bleed the bowl, while automatic and differential-pressure drains discharge on their own; this unit is manual. The 40 um element is the standard grade; specify 5 um (code W) where finer filtration is needed. The fitted square gauge reads in psi, with MPa or bar scales and an external round gauge available as alternatives. PT is the standard thread and G or NPT are order options - this unit is NPT. A 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. 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 number here. Tell us your application and we will confirm the flow data from the datasheet and check the sizing with you before you order.
The metal bowl collects the water and contaminants filtered out of the air, and with a manual drain an operator opens the drain to discharge it. If you want that handled without operator action, the GFR300 series is also available with automatic or differential-pressure drains - ask us about those variants.
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.