Airtac GFR Filter Regulator GFR300C08AF1K
The AirTAC GFR Filter Regulator GFR300C08AF1K 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 GFR300C08AF1K
GFR300C08AF1K is an AirTAC G-series filter regulator: filtration and pressure regulation in one body, with a drain bowl and no lubricator. This configuration is the 300 size with a 1/4 in PT port, the standard 40 um filter element, automatic drain, an embedded square pressure gauge scaled in MPa and a fitted reverse (check) valve. It removes water and particulate from compressed air and holds downstream pressure in the 0.15-0.9 MPa (20-130 psi) adjustment range, with a maximum working pressure of 1.0 MPa (145 psi) and an operating temperature of -5 to 70 C (non-freezing). The 300-size bowl is polycarbonate (PC).
This is a genuine AirTAC part. The GFR series is offered in 200, 300, 400 and 600 sizes with ports from 1/8 to 1 in, a choice of 40 um standard or 5 um (W) elements, differential-pressure, automatic or manual drains, embedded square or external round gauges (MPa, psi or bar scales), an optional reverse/check valve and G (BSPP) or NPT thread options. Flow is published as curves rather than a single rating, so ask us to confirm datasheet and sizing figures for your application on request.
Airtac GFR Filter Regulator GFR300C08AF1K Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C08AF1K |
|---|---|
| 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 GFR300C08AF1K
| 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.
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-C0 (two-unit set) |
Where the Airtac GFR Filter Regulator GFR300C08AF1K Is Used
Regulated air to pneumatic press circuits
Feeds bench and frame pneumatic presses where the check valve keeps the set working pressure on the downstream side if the shop air main is isolated, and the 40 um element suits standard cylinder seals.
Air supply to vertical cylinder load-holding duties
Installed ahead of upward-acting cylinders on lifts and clamping gantries, where the reverse valve helps maintain the regulated pressure against supply-side drops and the automatic drain copes with condensate.
General machine air on automated test rigs
Provides one filtered, regulated supply point for the actuators and jet nozzles on an automated test rig, with the embedded square gauge giving operators a direct MPa reading at the panel.
Is the Airtac GFR Filter Regulator GFR300C08AF1K the Right Unit?
The code carries the choices. Size 300 with a 1/4 in PT port is the mid-range step: down to 200 for compact drops or up to 400/600 as pipe and flow demand grow. The A selects the automatic drain, so the bowl sheds condensate unattended; the manual drain code gives operator-controlled draining and a regulation range down to 0.05 MPa (7-130 psi). No W means the 40 um standard element; add W for the finer 5 um grade where downstream components need it. F1 orders the embedded square gauge on an MPa scale, and the trailing K fits a reverse (check) valve that holds downstream pressure if the upstream line is vented. PT is the standard thread; G (BSPP) and NPT are catalogue options to order. Flow is published as curves, not a single rating, so ask us to confirm sizing against the datasheet 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 GFR300C08AF1K FAQ
AirTAC publishes flow for the G series as curves rather than a single rated figure, so we do not quote a rated flow number. Send us your line pressure and air demand and we will confirm the sizing against the datasheet on request.
The 40 um element in this model is the standard grade and suits general cylinders, valves and tools on plant air. Choose the W code for the 5 um element when the downstream equipment needs finer protection from water carry-over and fine particulate.
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Request a Quote for Airtac GFR Filter Regulator GFR300C08AF1K
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.