The AirTAC GFR300C10MNWTK AirTAC Filter Regulator NPT3/8 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 GFR300C10MNWTK is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This size 300 unit takes a 3/8 in NPT port, has a manual drain on its polycarbonate bowl, and carries a 5 um filter element for finer filtration than the standard 40 um grade. The regulator is the standard type with an adjustment range of 0.05-0.9 MPa (7-130 psi) on this manual-drain version, maximum inlet pressure is 1.0 MPa (145 psi), and the working temperature range is -5 to 70 C (non-freezing). A reverse/check valve is fitted, no gauge is supplied with this code, and a mounting bracket is included.
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 for drain type, filter grade, gauge, thread (PT standard, G and NPT to order) and bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C10MNWTK AirTAC Filter Regulator NPT3/8 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) |
Fitted at the drop ahead of a machining centre's pneumatic valves and clamps, this unit strips water and fine particulate from the shop air line and holds a steady regulated pressure so clamping and tool-change motions stay repeatable through the shift.
Mounted where a packaging conveyor's diverters, pushers and sealing cylinders take off from the main header, it cleans the air and sets the working pressure the line was designed around, with the manual drain emptied during scheduled changeovers.
Placed on the supply to a lab or pilot-plant test rig, the 5 um element protects sensitive pneumatic instruments and actuators from fine contamination, while the regulator lets technicians dial in and hold the exact test pressure for each run.
Step through sizes 200, 300, 400 and 600 to match the port and the flow your line needs - the 300 size here takes a 3/8 in port. Choose the drain: differential-pressure (default), automatic (A) or manual (M, as on this unit), with manual best where an operator can drain the bowl on a routine. Pick the filter grade: 40 um standard or 5 um (W) for finer protection, as fitted here. Gauges are optional (round or square, with MPa, psi or bar scales) and this code carries none. Thread on this unit is NPT, with PT as the standard and G available to order, and a bracket is included. Flow is published as curves, not a single rating, so 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 this series as curves, not as a single rated figure, so there is no honest one-number answer. Tell us your working pressure and the flow your application needs, and we will confirm the sizing against the datasheet before you order.
M is a manual drain, so the bowl is emptied by hand at intervals rather than automatically. W is the 5 um filter element, finer than the standard 40 um grade. N means no gauge is fitted (gauges are optional). K means a reverse/check valve is fitted. The unit also includes a mounting bracket.
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.