The AirTAC GFR300C08JC3TK 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 GFR300C08JC3TK is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and holds the downstream pressure steady. This configuration is built for 1/4 in NPT ports, carries the standard 40 um filter element, and drains condensate by differential pressure, so the polycarbonate bowl empties itself as the pressure drop across the element builds. Outlet pressure is adjustable across 0.15-0.9 MPa (20-130 psi), a round gauge reading in bar is fitted for a local pressure check, and a reverse (check) valve is built in. 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 family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and orderable options include automatic or manual drains, a 5 um element (code W), square or round gauges with MPa, psi or bar scales, G (BSPP) or NPT threads, and bracket mounting. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR300C08JC3TK 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) |
Point-of-use clean, regulated air for a CNC machining centre's tool-clamping and chip-clearing circuits, with the built-in check valve helping hold the downstream setting if supply pressure dips.
Feeding filtered, regulated air to carton sealers and case-taping heads on a packaging line, where the 40 um element keeps water and debris out of the sealing cylinders and the bar gauge gives operators a local set-pressure check.
Regulating supply air to pneumatic control valves and positioners on a process skid, where steady set pressure and a local round gauge support consistent valve response.
Size 300 with a 1/4 in NPT port suits circuits plumbed at 1/4 in; step up to size 400 or 600 when the line needs more flow, since larger sizes carry larger ports and higher flow capacity. Drain type is a real choice: differential-pressure (this unit) empties the bowl on pressure drop, automatic (A) drains continuously, and manual (M) relies on an operator. The 40 um element is standard and code W orders the 5 um grade. Gauge scale (MPa, psi or bar), thread (PT is the standard; G and NPT are order options) and a mounting bracket are all decodable choices. Because flow is published as curves, not a single rating, send us your flow and pressure conditions and we will confirm sizing against the datasheet before you order.
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 there is no one l/min or SCFM number to quote. Send us your required flow and upstream/downstream pressures and we will confirm the sizing against the datasheet on request.
K means a reverse (check) valve is fitted, so air will not flow back from the downstream side to the upstream side. It is an option on GFR units; the same model without the K in its code does not carry the check valve.
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.