Airtac GFR Filter Regulator GFR300C10NK
The AirTAC Airtac GFR Filter Regulator GFR300C10NK 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.
- TypeFilter regulator
- Port sizeSee datasheet
- Regulating range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade40 µm
- DrainDifferential-pressure drain
- Bowl materialPC
- Pressure gaugeFitted
- ThreadPT
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac GFR Filter Regulator GFR300C10NK
This AirTAC GFR unit filters and regulates compressed air in one body: the bowl separates water and particles for the drain to remove, and the adjusting knob sets the downstream pressure. The K code fits a reverse (check) valve in the unit so air cannot flow back upstream through it. This configuration is the 300 size with a PT3/8 port, standard 40 um element, differential-pressure drain and no pressure gauge. Maximum inlet pressure is 1.0 MPa (145 psi); with the differential-pressure drain the regulator adjusts from 0.15 to 0.9 MPa (20-130 psi).
It is a genuine AirTAC part in the 200 to 600 G-series range (1/8 in. to 1 in. ports), available with 40 um or 5 um elements, differential-pressure, automatic or manual drains, and gauge or no-gauge variants. The 300 size uses a polycarbonate bowl and is rated for -5 to 70 C non-freezing compressed air. Flow is published as curves rather than a single rated figure, so we confirm datasheet and flow figures on request.
Airtac GFR Filter Regulator GFR300C10NK Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C10NK |
|---|---|
| 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.
Model Code: Airtac GFR Filter Regulator GFR300C10NK
| 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.
Size Class
- GFR200PT1/8" - PT1/4"
- GFR300PT1/4" - PT1/2"
- GFR400PT3/8" - PT1/2"
- GFR600PT3/4" - PT1"
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) |
Where the Airtac GFR Filter Regulator GFR300C10NK Is Used
Vertical press ram circuits
Supplying a small pneumatic press where the check valve prevents reverse flow through the unit, so the downstream side is not vented back toward the supply line.
Scissor lift table supply
Regulating air to the lifting cylinders of a scissor lift table, with the check valve blocking backflow through the unit toward the supply side.
Leak-test bench supply
Feeding a leak-test station where the circuit under test must stay isolated from supply-side disturbances; the check valve prevents reverse flow through the regulator.
Is the Airtac GFR Filter Regulator GFR300C10NK the Right Unit?
The 300 frame takes a 3/8 in. PT port, one step above the 1/4 in. 200 and one below the 1/2 in. 400, so match the frame to the line's air demand. The differential-pressure drain (blank code) suits bowls that cycle regularly; order the automatic (A) or manual (M) code if the installation needs it. The standard 40 um element can be swapped for the 5 um (W) grade, and the check valve (K) is already fitted in this code. No gauge is included (N), gauge variants are orderable, PT is the standard thread with G (BSPP) and NPT as options, and the bracket is included unless J is specified.
Because flow appears only as curves, ask us to confirm sizing from the datasheet against your pressure and air-demand conditions before ordering.
Quick checklist
- ✓ Body size for your peak flow (See datasheet here)
- ✓ Element 40 µm or 5 µm
- ✓ Drain sets the regulating band
- ✓ Gauge fitted, shape and scale
- ✓ Thread PT, G (BSPP) or NPT
- ✓ Oil needed downstream? Use GFC instead
Installation & Maintenance Notes
- check Mount vertically, bowl down, following the airflow arrow.
- check One body does the filtering and the regulating — no separate regulator needed.
- check Keep inlet pressure at or below 1.0 MPa (145 psi).
- check Adjust only within 0.15 - 0.9 MPa (20 - 130 psi).
- check Drain condensate before the bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
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 GFR Filter Regulator GFR300C10NK FAQ
There is no single rated flow figure: AirTAC publishes G-series performance as flow curves. Share your operating pressure and air consumption and we will confirm the flow and sizing from the datasheet on request.
K fits a reverse (check) valve in the unit, so air cannot flow back upstream through the regulator. The rest of the code decodes as the 300 frame with a PT3/8 port, differential-pressure drain, 40 um element and no gauge; other drains, grades and threads are catalogue options.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac GFR Filter Regulator GFR300C10NK
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.