The AirTAC GFR300C08AJC1TK AirTAC Filter Regulator NPT1/4 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.
The GFR300C08AJC1TK is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the 300 size with a 1/4 in NPT port, a 40 um filter element, an automatic drain that expels collected condensate without manual attention, and a reverse/check valve that holds the downstream setting when upstream pressure is lost. Outlet pressure is set within the 0.15-0.9 MPa (20-130 psi) regulation range and read on the fitted round MPa gauge; maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing). The 300-size bowl is PC (polycarbonate), and no mounting bracket is included with this code.
This is a genuine AirTAC part. The GFR filter-regulator line is available in 200, 300, 400 and 600 sizes with port options from 1/8 in to 1 in, PT as standard thread and G or NPT as order options, plus a choice of drain type, 40 um or 5 um (W) filtration, gauge style and scale, and low-pressure or standard regulator type. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C08AJC1TK AirTAC Filter Regulator NPT1/4 |
|---|---|
| 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.
| 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.
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) |
Feeds filtered, pressure-regulated air to the pneumatic tool circuits and clamps of a CNC machining cell, with the automatic drain keeping condensate out of the bowl during unattended shifts and the check valve holding the set pressure through supply dips.
Conditions the air feeding cylinder-actuated carton sealing and case-packing stations on a packaging conveyor line, where the 40 um element protects valve spools and the regulator keeps actuator speed consistent at a fixed setting.
Installed at individual workbench drop legs in an assembly plant, giving each operator a locally regulated air supply for air tools and fixtures, with the round MPa gauge making the set point visible at the station.
Start with the port and size: this unit is the 300 body with a 1/4 in NPT port, one step up from the 200/1/8 in class - match the size step to the air consumption of the circuit it feeds, and ask us to confirm the flow curve against your demand before ordering, since AirTAC publishes flow as curves rather than a single rating. The 40 um element is the standard grade for general plant air; choose the 5 um (W) option only where downstream equipment needs finer filtration. The automatic drain on this code suits unattended or hard-to-reach installations; manual and differential-pressure drains are available on other codes if you prefer operator-controlled or pressure-differential draining. The round gauge fitted here reads in MPa; square embedded gauges and psi or bar scales are selectable. NPT is an order option - PT is the catalogue standard thread, so confirm the thread you need at ordering. No mounting bracket is supplied with this J-coded unit; bracketed versions exist if you want panel or wall fixing.
Quick checklist
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 publishes flow for the GFR300 as curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your line pressure and the air consumption of the equipment you are feeding, and we will confirm the flow curve and correct sizing from the datasheet on request before you order.
The A in the code GFR300C08AJC1TK means the bowl drains itself automatically, expelling collected condensate without an operator - useful for unattended or hard-to-reach installations. Manual (M) and differential-pressure (blank) drain versions of the same filter regulator are available as separate codes if you prefer operator-controlled draining.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
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.