The AirTAC GFR300C15MNTK 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 AirTAC GFR300C15MNTK is a size 300 filter regulator that removes water and particulate from compressed air and sets downstream pressure in a single body. This configuration has a 1/2 in NPT port, a manual drain bowl in polycarbonate, a 40 um standard filter element, and a fitted reverse (check) valve that holds the downstream setting when upstream supply is lost. The regulator is the standard type with a setting range of 0.05-0.9 MPa (7-130 psi) for manual-drain units, maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing). No gauge is fitted (code N); a mounting bracket is included.
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in. Across the family you can order automatic or manual drains, a 5 um element (code W), gauge options, G (BSPP) or NPT threads, and low-pressure or check-valve variants. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C15MNTK 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) |
Clean, pressure-set air for the clamp and ejector cylinders on a metal stamping press, with the check valve holding the set pressure if the shop supply dips during a stroke.
Filtered and regulated air feeding the pusher and diverter cylinders on a carton packaging conveyor, with the manual drain cleared during scheduled line stops.
A stable, particle-filtered supply for the actuator circuits on a laboratory or QA pneumatic test bench, where the low 0.05 MPa end of the manual-drain setting range suits low-pressure test points.
Choose the GFR size by the port step your air line needs: size 300 with a 1/2 in port sits mid-range in the 200/300/400/600 ladder, and the right step depends on the flow your line draws - ask us to check the published flow curve against your demand before ordering. Drain type is a real decision: this unit has a manual drain (code M), which also widens the regulator setting range to 0.05-0.9 MPa (7-130 psi) versus 0.15-0.9 MPa (20-130 psi) on automatic and differential-pressure drain versions. The 40 um element is standard; specify code W for the 5 um grade where finer filtration is needed. Gauge, thread (PT standard, G and NPT as order options) and bracket choices can all be matched to your panel - this unit ships with the bracket and a check valve 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 filter-regulator flow as curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Send us your line pressure and air demand and we will confirm the flow figures from the datasheet for this exact model on request.
Code M specifies a manual drain, so condensate in the polycarbonate bowl is emptied by hand rather than automatically. It also gives the widest regulator setting range for this family: 0.05-0.9 MPa (7-130 psi) on manual-drain units versus 0.15-0.9 MPa (20-130 psi) on automatic and differential-pressure drain versions. If you cannot schedule drain checks, ask us about the automatic-drain variant of the same size.
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.