Airtac GFR Filter Regulator GFR300C08MJC1K
The AirTAC GFR Filter Regulator GFR300C08MJC1K 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 GFR300C08MJC1K
GFR300C08MJC1K is an AirTAC G-series filter regulator: water and particulate filtration plus pressure regulation combined in one body. This 300-size unit carries a PT1/4 port, a manual-drain bowl in polycarbonate (PC), a 40 um standard filter element, and an external round pressure gauge on the MPa scale. The K code means a reverse (check) valve is fitted, and the J code means the mounting bracket is not supplied. Set point is adjusted over 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.
This is a genuine AirTAC part. The GFR filter-regulator family is offered in 200, 300, 400 and 600 sizes, with manual, automatic or differential-pressure drains, 40 um or 5 um elements, square or round gauges, and G (BSPP) or NPT thread options alongside the standard PT. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing for your application on request.
Airtac GFR Filter Regulator GFR300C08MJC1K Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C08MJC1K |
|---|---|
| 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 GFR300C08MJC1K
| 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 GFR300C08MJC1K Is Used
CNC fixture clamping
Feeds regulated air to the clamp cylinders on a machining fixture, filtering condensate and particulate from the shop supply ahead of the clamps.
Spray-booth gun supply
Conditions plant air ahead of the spray guns on a finishing line, regulating pressure at the booth and allowing hands-on draining at shift checks.
Solenoid valve manifold
Sits upstream of a solenoid-valve manifold on a bottling line, giving the valves a filtered, regulated 1/4-inch air supply.
Is the Airtac GFR Filter Regulator GFR300C08MJC1K the Right Unit?
The 300 size sits mid-range in the G-series with a 1/4 inch PT port; if your line draws more air, step up to the 400 or 600 size rather than pushing this unit. The manual drain means an operator opens the bowl drain periodically, and this version adjusts from 0.05 MPa, lower than the 0.15 MPa floor of automatic and differential-drain versions. The 40 um element suits general plant air; choose the W variant for 5 um filtration. Thread is PT as standard, with G (BSPP) and NPT available to order, and the J code omits the bracket, so add one if you panel-mount. Because flow appears in the catalogue as curves, not a single rating, ask us to check the curve against your air demand 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 GFR300C08MJC1K FAQ
AirTAC publishes flow for the GFR300 as curves, not a single rated number, so no rated flow is quoted here. Send us your operating pressure and air demand and we will confirm the datasheet curve and the correct size before you order.
C1 in the code specifies the external round gauge on the MPa scale. A square-gauge version (F) is available, psi and bar scales are order options, and the embedded square gauge is the standard configuration across the GFR range.
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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 GFR300C08MJC1K
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.