The AirTAC GFR300-15C2WK AirTAC Filter Regulator PT1/2, 5 um, psi is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/2" 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 GFR300-15C2WK is a 300-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is threaded PT1/2 (1/2 in, PT standard), carries the finer 5 um filter element instead of the 40 um standard, and is fitted with a differential-pressure drain that bleeds accumulated condensate automatically whenever the pressure differential across the element rises. An external round gauge on a psi scale is fitted, a reverse/check valve is included to hold downstream pressure when the supply is lost, and the mounting bracket is included.
This is a genuine AirTAC part from the GFR300 series. The family spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, PT, G and NPT threads, manual, automatic or differential-pressure drains, 40 um or 5 um elements, and MPa, psi or bar gauge scales. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures on request.
| Model | GFR300-15C2WK AirTAC Filter Regulator PT1/2, 5 um, psi |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (PT thread) |
| Filtering grade | 5 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 — round, 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. |
|---|---|
| 15 | Port size PT1/2". 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Feeds clean, regulated air to the tool-change and clamping circuits of a machining centre, where the 5 um element protects fine solenoid valves from particulate carryover.
Sits at the drop of a packaging conveyor's air ring main, holding a steady set pressure to cylinders that seal, fold and cut cartons through repeated shifts.
Conditions the air feeding spray guns and booth actuators, using the finer 5 um grade and the check valve to keep the set pressure stable if the supply dips.
Step up or down the size ladder (200, 300, 400, 600) to match the port and flow demand of the line; this 300 size lands at PT1/2. Choose the drain to suit access: differential-pressure (as fitted here) needs no daily attention, automatic drains continuously, and manual suits attended installations. Pick the 5 um element, as on this unit, when downstream equipment needs finer filtration than the 40 um standard. Gauge scale (MPa, psi or bar) and thread (PT standard, G or NPT to order) are decodable choices, and a bracket can be included or omitted.
Because flow is published as curves rather than a single rating, 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 no single number would be honest. Tell us your line pressure, set pressure and the equipment served, and we will confirm the sizing from the datasheet on request before you order.
The W in the code selects the 5 um filter grade instead of the 40 um standard, for finer protection of downstream valves and tools. The K fits a reverse/check valve that holds downstream pressure if the supply is interrupted. Both are catalogue options on the GFR300, and the differential-pressure drain and psi round gauge are read from the remaining code positions.
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.