Airtac GFR Filter Regulator GFR300C15MJC1K
The AirTAC Airtac GFR Filter Regulator GFR300C15MJC1K 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 GFR300C15MJC1K
The GFR300C15MJC1K is an AirTAC G-series filter regulator with a reverse (check) valve fitted. It filters water and particulate from compressed air and regulates downstream pressure in one body, and the K option helps hold downstream pressure when the upstream side is shut off or vented. Sized 300 with PT1/2 ports, it carries the standard 40 um element, a manual drain and an external round gauge with an MPa scale, and is built without a bracket (J). Maximum inlet pressure is 1.0 MPa (145 psi); regulation range with the manual drain is 0.05-0.9 MPa (7-130 psi); working temperature is -5 to 70 C, non-freezing. The 300-size bowl is polycarbonate (PC).
This is a genuine AirTAC part. The GFR series covers sizes 200, 300, 400 and 600 with ports from 1/8 in. to 1 in., and options include drain type, 40 um or 5 um elements, square or round gauges in MPa, psi or bar scales, PT, G (BSPP) or NPT threads, brackets and the reverse valve. Flow is published as curves rather than a single rating, so we confirm flow and datasheet figures for your circuit on request.
Airtac GFR Filter Regulator GFR300C15MJC1K Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C15MJC1K |
|---|---|
| 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 GFR300C15MJC1K
| 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 GFR300C15MJC1K Is Used
Hydraulic-style pneumatic press holding circuit
Feeds and regulates the work cylinder of a small pneumatic press. The reverse valve helps the downstream circuit keep its pressure if the upstream header is dumped, so the stroke setting is not lost mid-job.
Safety-adjacent clamp circuit on a welding fixture
Supplies regulated air to the clamps of a robot welding fixture; the check valve backs up the circuit between the regulator and the clamps so a planned upstream shutdown does not vent the fixture.
Lift-assist balancer on an assembly line
Regulates supply to a pneumatic lift-assist balancer at an assembly station, with the MPa gauge letting maintenance verify the set pressure and the manual drain emptied during line rounds.
Is the Airtac GFR Filter Regulator GFR300C15MJC1K the Right Unit?
Specify the K (reverse valve) build when the downstream circuit must keep its pressure while the upstream header is isolated - clamping, holding and safety-adjacent functions are typical reasons. Manual drain keeps servicing simple on attended lines, and the standard 40 um element is right for general cylinders and valves; move to the 5 um W variant where the point of use is finer. The external round MPa gauge is easy for operators to read, with psi or bar scales orderable. PT is the standard thread; G (BSPP) and NPT variants are catalogue options. If your flow sits near the limit of the 300 size, step to 400 or 600 - ask us to confirm curve-based flow against your application 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 GFR300C15MJC1K FAQ
AirTAC publishes this series' flow as curves, so there is no single rated figure to quote. Share your inlet pressure, set pressure and consumption and we will read the flow off the datasheet curves and confirm it for your application on request.
Only the K: this unit has a reverse (check) valve fitted, so downstream pressure is held if the upstream side is vented. Everything else matches - PT1/2 ports, manual drain, standard 40 um element, no bracket, round MPa gauge, 1.0 MPa (145 psi) max inlet, and 0.05-0.9 MPa (7-130 psi) regulation with the manual drain.
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Standard models are processed and dispatched in 3-5 business days.
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Request a Quote for Airtac GFR Filter Regulator GFR300C15MJC1K
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.