AirTAC GFR300-08 Filter Regulator (GFR30008MJC1)
The AirTAC AirTAC GFR300-08 Filter Regulator (GFR30008MJC1) 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 PT1/4" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 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 sizePT1/4"
- Regulating range0.05 - 0.9 MPa (7 - 130 psi)
- Filtering grade40 µm
- DrainManual 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 GFR300-08 Filter Regulator (GFR30008MJC1)
The GFR300-08MJC1 is an AirTAC G-series filter regulator, filtering water and particulate and regulating downstream pressure in one 300-size unit. This configuration uses a PT1/4 port, a manual drain bowl, the standard 40 um element, and an external round gauge with MPa scale; the J code means it ships without a mounting bracket, so plan for panel or manifold fixing at installation. With manual drain, the regulator adjusts across 0.05-0.9 MPa (7-130 psi).
This is a genuine AirTAC part. Across the GFR series you can choose sizes 200 to 600, G or NPT threads, automatic or differential-pressure drains, a finer 5 um element, different gauge scales and bracket variants. Flow is published only as curves, so we confirm datasheet figures for your duty on request.
AirTAC GFR300-08 Filter Regulator (GFR30008MJC1) Technical Specifications
| Model | AirTAC GFR300-08 Filter Regulator (GFR30008MJC1) |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, MPa 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 0.05 - 0.9 MPa (7 - 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 GFR300-08 Filter Regulator (GFR30008MJC1)
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| 08 | Port size PT1/4". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 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 · PT1/4" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Where the AirTAC GFR300-08 Filter Regulator (GFR30008MJC1) Is Used
Panel-mounted machine air station
Bolted inside a machine electrical cabinet wall, it regulates and filters the air feeding solenoid valves across a textile machine, with the round MPa gauge read through a panel cutout.
Pneumatic clamping fixture supply
On a drilling fixture with air clamps, it holds a fixed clamping pressure shift after shift and removes line water that would otherwise corrode the clamp cylinders.
Lab air supply drop
Feeding bench-top pneumatic apparatus in a test lab, the 40 um element and stable regulated pressure give clean, repeatable air for day-to-day experiments.
Is the AirTAC GFR300-08 Filter Regulator (GFR30008MJC1) the Right Unit?
If your panel already provides fixing, the no-bracket J version saves a step; otherwise pick a bracket variant in the same series. The round external gauge sits where it is easiest to read, with MPa on this code and psi or bar scales also available. Manual drain fits attended installations; automatic or differential-pressure drain covers inaccessible spots.
Size 300 at 1/4 in is a common machine-level port; confirm against your true demand. Since flow is published as curves, not a single rating, ask us to verify sizing from the datasheet before you order.
Quick checklist
- ✓ Body size for your peak flow (PT1/4" 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 0.05 - 0.9 MPa (7 - 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 GFR300-08 Filter Regulator (GFR30008MJC1) FAQ
There is no single rated flow number for this unit: AirTAC publishes G-series flow as curves only. We will pull the datasheet and confirm the flow behaviour at your operating pressure on request, so you can size with real data.
J means this version comes without a mounting bracket, so it is intended for panel, manifold or existing-plate mounting. If you need a wall or frame bracket, choose a GFR300-08 code without the J and the bracket is included.
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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 GFR300-08 Filter Regulator (GFR30008MJC1)
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.