The AirTAC GFR300C15MJC2TK AirTAC Filter Regulator NPT1/2 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 GFR300C15MJC2TK is an AirTAC GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in one body. This size 300 unit has a 1/2 in NPT port, a 40 um standard filter element, a polycarbonate (PC) drain bowl with manual drain, a built-in check (reverse) valve, and a round pressure gauge reading in psi. The regulator adjusts from 0.05 to 0.9 MPa (7-130 psi), the maximum inlet pressure is 1.0 MPa (145 psi), and the operating 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 include automatic or differential-pressure drains, a finer 5 um element (code W), square or round gauges with MPa, psi or bar scales, and G or NPT threads in place of the PT standard. Rated flow is published as curves rather than a single figure, so ask us to confirm the datasheet for your application.
| Model | GFR300C15MJC2TK AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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) |
Clean, regulated air to clamping cylinders on a fixture bed, with the fitted check valve holding the downstream circuit against momentary supply dips while the manual-drain bowl is emptied during scheduled stops.
A 1/2 in filtered and regulated feed for the air cylinders on a case-packing or carton-forming conveyor, where the 40 um element keeps rust and pipe scale out of valve spools and the psi gauge gives operators a visible line setting.
Regulated air for tool-change clamps and air-powered workholding on a machining centre, with the filter section protecting the tool changer and the regulator set to the fixture manufacturer's pressure.
Step through the decodable choices in order. Size: 200, 300, 400 and 600 cover ports from 1/8 to 1 in, so pick the size whose flow curve covers your air consumption at your working pressure - this unit is size 300 with a 1/2 in port. Drain: manual (this unit) means draining the bowl by hand at intervals; automatic and differential-pressure drain versions are available in the same series. Filter grade: 40 um is standard, 5 um (code W) suits finer downstream protection. Gauge: the embedded square gauge is standard and an external round gauge is optional, with MPa, psi or bar scales - this configuration carries the round psi gauge. Thread: PT is the standard; G (BSPP) and NPT are catalogue options to order, and this unit is the NPT version. Code J means no mounting bracket is included. Flow 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 GFR300 series as curves, not as a single rated figure, so we do not quote a number here. Send us your operating pressure and air consumption and we will confirm the datasheet and flow curve for this exact model before you order.
The M in the code means the bowl is drained by hand: open the drain at regular intervals to release collected water. If you would rather not drain manually, the same GFR300 series is available with an automatic drain (code A) or a differential-pressure drain (blank) instead.
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.