The AirTAC GFR300-15 AirTAC Filter Regulator 1/2 in PT, 5 um 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 GFR300-15 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 1/2 in PT port, 5 um filtration (the finer W grade, versus the 40 um standard element), a differential-pressure drain that bleeds condensate automatically as flow passes through, and a fitted embedded square gauge scaled in psi. The standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi), with a maximum inlet pressure of 1.0 MPa (145 psi) and an operating temperature of -5 to 70 C (non-freezing). The 300-size bowl is polycarbonate (PC); no mounting bracket is included with the J suffix.
This is a genuine AirTAC part. The GFR filter-regulator line spans 200, 300, 400 and 600 sizes with port options from 1/8 in to 1 in, thread choices of PT (standard), G (BSPP) or NPT, manual or automatic drain alternatives, 40 um or 5 um filtration, and MPa, psi or bar gauge scales. 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 | GFR300-15 AirTAC Filter Regulator 1/2 in PT, 5 um |
|---|---|
| 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 — square, psi 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. |
|---|---|
| 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. |
| 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. |
| 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. |
| (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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Feeding filtered, regulated air to spray booths and paint pumps on a finishing line, where the 5 um element helps keep water and particulate out of the coating process and the psi gauge lets operators set and check line pressure at a glance.
Conditioning the supply to carton sealers, case packers and wrapping machines on a packaging line, combining water/particulate removal and pressure regulation in one body to save panel space on a 1/2 in PT drop.
Serving as the main air-preparation point for a control panel or manifold that feeds directional valves and cylinders, with the differential-pressure drain handling condensate during continuous production flow.
Use the size and port step (200/300/400/600, 1/8 in to 1 in) to match the line size and the flow your circuit needs - the 300 size with a 1/2 in PT port suits mid-range supply lines. Choose the drain: this unit's differential-pressure drain suits steady-flow lines; pick automatic (A) for intermittent flow or manual (M) where you want scheduled draining. Pick the filter grade: 40 um standard for general protection, 5 um (W, this unit) for finer pre-filtration ahead of valves or instruments. Gauge scale is selectable (MPa, psi or bar - this unit is psi) and an external round gauge is optional. Thread is PT as standard with G (BSPP) and NPT as order options, and the J suffix means no mounting bracket is fitted.
Because flow is published as curves rather than a single rating, we do not quote a rated flow number - send us your application details 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 series as curves, not as a single rated number, so we do not quote a rated flow, Cv or SCFM figure. Send us your line size, pressure and consumption details and we will confirm the flow curve and correct sizing from the datasheet on request.
The W suffix in GFR30015JF2W selects the optional 5 um filtration grade instead of the 40 um standard element, and the F2 suffix selects the embedded square gauge scaled in psi. Both are catalogue decode choices: you can order the same unit with the 40 um element, a bar or MPa scale, or an external round gauge instead.
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.