The AirTAC GFR300C08MNWTK AirTAC Filter Regulator NPT1/4, 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 GFR300C08MNWTK is an AirTAC GFR300 filter regulator: one body that first removes water and particulate from compressed air through a 5 um element, then regulates downstream pressure over 0.05-0.9 MPa (7-130 psi). This configuration is the 300 size with a 1/4 in NPT port, a manual drain for emptying the metal bowl, a fitted reverse (check) valve, and an included mounting bracket. No gauge is fitted. Maximum inlet pressure is 1.0 MPa (145 psi) and the working 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 port sizes from 1/8 in to 1 in, drain choices (differential-pressure, automatic or manual), 40 um standard or 5 um filtration, gauge and thread options. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR300C08MNWTK AirTAC Filter Regulator NPT1/4, 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. |
|---|---|
| C0 | 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-C0 (two-unit set) |
Clean, regulated air at a set pressure keeps pick-and-place grippers on a robot cell acting consistently, while the 5 um element protects the valve manifold from particles and water.
A filter regulator at the drop to a case sealer supplies filtered air to the sealing and press cylinders, with the check valve holding the set pressure against backflow on the line.
Benchtop liquid-handling and sample-transfer stations use small air cylinders that need dry, finely filtered air at a stable, low setting - a job the 5 um element and 0.05-0.9 MPa range fit.
Start with the size and port: 300 size with a 1/4 in NPT port suits lines plumbed at 1/4 in; step up to 400 or 600 where the circuit demands more flow. This unit carries the 5 um element (code W) instead of the 40 um standard - choose 5 um where downstream valves and cylinders need finer protection. The manual drain means an operator opens the drain to empty the bowl; pick automatic or differential-pressure drain where the unit is hard to reach. No gauge is fitted on this configuration; gauge and scale options exist in the family. PT is the standard thread; G and NPT are catalogue options to order. A bracket is included.
Flow for this series is published as curves, not a single rated figure, 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, not as a single rated number, so we do not quote a figure here. Tell us your application and we will confirm the relevant flow and datasheet figures for this 300 size, 1/4 in NPT unit on request.
Manual drain (code M) means the accumulated water in the bowl is emptied by opening the drain by hand, which suits units mounted where an operator passes regularly. This model also carries the 5 um element instead of the 40 um standard, a fitted check valve, and no gauge. If the unit will be hard to reach, ask us about the automatic or differential-pressure drain variants of the same GFR300 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.