The AirTAC GFR300C15MJF2WK AirTAC Filter Regulator PT1/2, 5 um 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 GFR300C15MJF2WK is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration is built around a PT1/2 (1/2 in) port, a 5 um filter element for finer filtration than the standard 40 um grade, and a manual drain that the operator opens by hand to expel collected condensate. The standard regulator covers 0.05-0.9 MPa (7-130 psi), an embedded square gauge graduated in psi shows the setting at a glance, and a built-in check valve (code K) is fitted for reverse-flow duty. The bowl is metal, maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and this version comes without a mounting bracket.
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, and each size can be ordered with a different drain type, filter grade, gauge scale, thread (PT as standard, G and NPT to order) and bracket option. Flow figures for this series are published as curves rather than a single rating, so ask us to confirm sizing and datasheet details for your application before ordering.
| Model | GFR300C15MJF2WK AirTAC Filter Regulator PT1/2, 5 um |
|---|---|
| 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) |
On a machining cell, this unit filters and regulates the air feeding pneumatic clamps and fixtures: the 5 um element protects precision valve internals, the square psi gauge gives a local readout, and the fitted check valve handles reverse-flow duty in the circuit.
Feeding the stopper and pusher cylinders along a bottling conveyor, the regulator holds a steady setting at the manifold while the manual-drain bowl collects condensate that the operator vents during scheduled changeover.
On a laboratory test rig driving pneumatic actuators, the embedded square gauge graduated in psi gives a direct local pressure readout and the 5 um grade keeps fine metering valves clear of particulate and water.
Choose the size and port against the air your line actually uses: 300 sits mid-range in the GFR family, with the larger 400 and 600 sizes moving more air through bigger ports. This unit already carries the 5 um element; the standard grade is 40 um, so 5 um is the right pick where downstream equipment needs finer protection from water and particles. Drain choice matters: manual (as here) means the bowl is emptied by hand, while automatic and differential-pressure drains discharge condensate without attention - note that the regulator adjust range differs by drain type (0.05-0.9 MPa with manual drain). Gauge scale can be MPa, psi or bar, and thread is PT as standard with G (BSPP) and NPT available to order. Flow for this series is published as curves, not a single rating, so 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 operating pressure and air demand and we will confirm the sizing from the datasheet on request.
This unit has a manual drain (code M): the bowl is emptied by hand, which suits lines that are shut down regularly. With a manual drain the regulator adjust range is 0.05-0.9 MPa (7-130 psi); automatic and differential-pressure drain versions are set between 0.15-0.9 MPa (20-130 psi).
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.