The AirTAC GFR300C15MF3TK AirTAC Filter Regulator NPT 1/2 in 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 GFR300C15MF3TK is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This configuration is a 300-size unit with a 1/2 in NPT port, a manual drain, a 40 um standard filter element, an embedded square gauge scaled in bar, a built-in reverse/check valve, and a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). With the manual drain fitted, the regulated outlet covers 0.05-0.9 MPa (7-130 psi).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, PT as the standard thread and G (BSPP) or NPT as order options, a choice of differential-pressure, automatic or manual drain, 40 um standard or 5 um (W) filtration, and gauge scales in MPa, psi or bar. Flow is published as curves rather than a single rating, so ask us to confirm the figures for your application from the datasheet.
| Model | GFR300C15MF3TK AirTAC Filter Regulator NPT 1/2 in |
|---|---|
| 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) |
Point-of-use conditioning for cylinder-driven assembly stations: the 40 um element strips water and debris from the shop-air main while the regulator holds a steady, hand-set downstream pressure to the actuators.
Clean, regulated air for stopper cylinders and diverters on a packaging conveyor; the fitted check valve helps hold the downstream setting if the upstream supply dips.
A compact filter regulator for a maintenance shop test bench or tool drop, giving technicians a bar-scaled square gauge and hand-adjusted pressure at a 1/2 in NPT drop.
The real choices in this family are decodable from the code. Step up or down in size (200/300/400/600) and port (1/8 in to 1 in) to match the pipe and the air demand of your line - we confirm exact flow from the datasheet curves on request, since AirTAC publishes flow as curves, not a single rated figure. Drain type matters: manual (as here) means you drain the bowl by hand, while automatic and differential-pressure drains look after themselves. Filtration is 40 um standard; specify W for 5 um where finer protection is needed. The square gauge on this unit is scaled in bar; MPa and psi scales, or an external round gauge, are available. PT is the standard thread - G (BSPP) and NPT (as on this unit) are catalogue options to order. A mounting bracket is included, and the reverse/check valve (K) is fitted.
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, not a single rated figure, so we do not quote one number. Tell us your line pressure and the air your application needs, and we will confirm sizing against the datasheet on request.
The bowl collects the water and debris separated out by the 40 um element, and with the M option you open the drain by hand to expel it. Automatic and differential-pressure drain versions are available in the same family if you prefer unattended draining.
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.