The AirTAC GFR300-08JF2K AirTAC Filter Regulator PT1/4, 40 um 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 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 AirTAC GFR300-08JF2K is a filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This 300-size unit is fitted with a 1/4 in PT port, a 40 um standard filter element and a differential-pressure drain that clears collected condensate as flow passes through. Outlet pressure is set across the standard regulation range and read on the embedded square gauge supplied with a psi scale, and a reverse (check) valve is fitted to hold downstream pressure when the supply is lost. No mounting bracket is included in this configuration.
This is a genuine AirTAC part from the GFR filter-regulator line, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, a 5 um (code W) element option, gauge scale choices and G or NPT thread options. Max inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR300-08JF2K AirTAC Filter Regulator PT1/4, 40 um |
|---|---|
| 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. |
|---|---|
| 08 | Port size PT1/4". 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 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. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT1/4" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeds cleaned, pressure-regulated air to the tool-clamp and actuation circuits of a CNC machining centre, with the check valve holding the set pressure if the shop supply dips.
Conditions the air feeding the valve island on a carton-form-fill-seal line, protecting directional control valves from water and debris while holding a stable regulated setting.
Prepares the air for gripper and vacuum-generator circuits on a robotic handling cell, where the psi-scaled square gauge lets technicians set and verify the working pressure at the cell.
Start with the port and size step: this unit is 300 size with a 1/4 in PT port; step up to 400 or 600 (or down to 200) if your line's flow demand points to a different port. The 40 um element suits general plant air; choose the 5 um W option where finer particulate removal is needed. Drain choice matters: this configuration uses the differential-pressure drain (default); automatic or manual drains are available in the family. The gauge here is the embedded square type with a psi scale, and MPa or bar scales can be ordered. PT is the standard thread; G (BSPP) and NPT are catalogue options to specify at order. This unit ships without a mounting bracket; bracketed versions exist in the family. Flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for this series as curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Send us your line pressure, downstream demand and acceptable pressure drop and we will confirm the sizing from the datasheet curves on request before you order.
K means a reverse (check) valve is fitted, so downstream pressure is held if the upstream supply is interrupted. F2 means the embedded square gauge is supplied with a psi scale; MPa or bar scales are available as order options. Both are decode choices you can change when specifying the unit.
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.