The AirTAC GFR300C15MJF2GK AirTAC Filter Regulator G1/2 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 AirTAC GFR300C15MJF2GK is a size 300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration carries G1/2 ports with G (BSPP) thread, a 40 um standard filter element, a manual drain on the bowl, an embedded square gauge scaled in psi, and a built-in reverse/check valve that holds the downstream setting when upstream pressure is lost. The bowl on this 300 size is polycarbonate (PC). Maximum inlet pressure is 1.0 MPa (145 psi), the regulation range with the manual drain is 0.05-0.9 MPa (7-130 psi), and the operating temperature range is -5 to 70 C (non-freezing). No mounting bracket is included with this code.
This is a genuine AirTAC part. The GFR filter-regulator line spans sizes 200, 300, 400 and 600, with port sizes from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drains, a 5 um element option, gauge scales in MPa, psi or bar, and PT, G or NPT threads. Flow figures for this unit are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300C15MJF2GK AirTAC Filter Regulator G1/2 |
|---|---|
| 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) |
Mounted at the drop feeding a stamping press cylinder circuit, this unit filters condensed water and scale from the shop air line and holds a steady regulated pressure so the press stroke behaves consistently from cycle to cycle. The check valve keeps the setting if the main supply dips.
On a packaging line driving stopper and pusher cylinders, the 1/2 inch port serves the higher air demand of multiple actuators, the 40 um element keeps debris out of valve spools, and the psi gauge gives operators a readable setpoint at the machine.
On a workshop test bench where fixtures are cycled at set pressures, the regulator gives a repeatable downstream setting, the manual drain lets the operator bleed accumulated water after each session, and the check valve prevents the setting from creeping back when the supply is shut off.
Start with the port size: this unit steps up to 1/2 inch on the size 300 body, which suits lines running more air than the 1/4 and 3/8 sizes of the same series. Choose the drain to match access: this code has a manual drain, so someone must bleed the bowl periodically; automatic or differential-pressure drains suit unattended installations. The 40 um element fitted here is the standard grade; specify the 5 um (W) option only where downstream equipment demands finer filtration. The square gauge is scaled in psi on this unit, with MPa or bar scales available, and an external round gauge is an option. Thread is G (BSPP) here; PT is the standard thread and G or NPT are order options. This code ships without a mounting bracket, so plan the panel or manifold fixing accordingly. Because flow is published as curves rather than a single rating, send us your flow and pressure requirements 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. 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 required flow and working pressure and we will confirm the datasheet curve figures for this exact model on request before you order.
The M in the code specifies a manual drain: accumulated water is released by operating the drain by hand, which suits attended machines and test stands. AirTAC also offers automatic (code A) and differential-pressure (blank) drains on the GFR family for installations that are not checked daily. Note that the regulation range differs by drain type: 0.05-0.9 MPa (7-130 psi) with a manual drain, 0.15-0.9 MPa (20-130 psi) with automatic or differential-pressure drains.
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.