AirTAC GFR300-08 Filter Regulator (GFR30008AJC1)
The AirTAC AirTAC GFR300-08 Filter Regulator (GFR30008AJC1) 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 automatic 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 sizePT1/4"
- Regulating range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade40 µm
- DrainAutomatic 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 (GFR30008AJC1)
The AirTAC GFR series pairs filtration and regulation in one body, cleaning compressed air of water and particulate and then holding your set pressure. This 300-size unit has a 1/4 in PT port, an automatic drain, the standard 40 um filter element, and an external round pressure gauge scaled in MPa. The J in the code means no bracket is supplied. Maximum inlet pressure is 1.0 MPa (145 psi), the regulator range is 0.15 to 0.9 MPa (20-130 psi) on this auto-drain version, and temperature range is -5 to 70 C (non-freezing). The bowl at this size is PC (polycarbonate).
This is a genuine AirTAC part from a family spanning sizes 200 to 600 with ports from 1/8 to 1 in. Related codes offer a square embedded gauge in psi or bar scales, manual or differential-pressure drains, a 5 um fine element, G and NPT threads besides the PT standard, and bracket-included versions. Flow is published as curves rather than a single rating, so we confirm exact figures from the datasheet on request.
AirTAC GFR300-08 Filter Regulator (GFR30008AJC1) Technical Specifications
| Model | AirTAC GFR300-08 Filter Regulator (GFR30008AJC1) |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (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 | Automatic 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 0.15 - 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 GFR300-08 Filter Regulator (GFR30008AJC1)
| 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". |
| A | Drain: Automatic 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. |
| 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 (GFR30008AJC1) Is Used
Control panel air regulator stage
Mounted inside a machine control cabinet where space is planned without a bracket, conditioning the branch that feeds the panel's solenoid valves, with the MPa round gauge reading against the machine's pressure specs.
Trailer air-prep retrofit
A compact filter-regulator stage on a trailer-mounted compressor or tool box circuit, where the no-bracket body bolts to an existing fabricated plate and the automatic drain handles condensate on the road.
Maintenance bench supply
A general-purpose regulated air point on a maintenance department workbench, giving technicians a 40 um filtered supply with a directly readable MPa gauge for testing rebuilt pneumatic assemblies.
Is the AirTAC GFR300-08 Filter Regulator (GFR30008AJC1) the Right Unit?
The 300 size with a 1/4 in PT port covers mid-range circuits; scale to 200 or 400/600 to follow your flow path. The automatic drain suits unattended duty, while manual and differential-pressure drains serve supervised or steady-load points. The 40 um element is the standard grade - the 5 um W variant is there when air must be finer. This code's round gauge reads in MPa; square gauges in psi or bar are alternatives, and a bracket-included version exists if you later need panel fixing. Thread is PT as standard, with G (BSPP) and NPT as catalogue options.
Because flow is published as curves rather than a single rated figure, ask us to confirm your sizing against the datasheet before ordering.
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 0.15 - 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 GFR300-08 Filter Regulator (GFR30008AJC1) FAQ
There is no single rated flow to quote: AirTAC publishes flow for the GFR series as performance curves. We confirm the flow from the datasheet on request - give us your inlet pressure, regulated set point and expected demand, and we will check this 300-size, 1/4 in PT unit against your application before you order.
The J position selects no bracket, so the unit is supplied without the mounting bracket that standard GFR codes include - useful where you have your own plate or panel detail. Everything else decodes as the 300 size, 1/4 in PT port, automatic drain, 40 um element and an external round MPa gauge. A bracket-included version of the same configuration exists if you need it.
Authorized Export Seller
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 (GFR30008AJC1)
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.