The AirTAC GFR300-15T AirTAC Filter Regulator NPT1/2 5um Manual Drain 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 manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR300-15T is a filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This 300-size unit carries a 1/2 in NPT port, the finer 5 um filter element, a manual-drain polycarbonate bowl and a round MPa gauge fitted as standard. The standard regulator adjusts from 0.05 to 0.9 MPa (7-130 psi), and the manual drain means collected water is bled off by hand as part of scheduled maintenance.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in and PT, G or NPT threads. Drain type, filter grade, gauge style and scale are all order choices, and a mounting bracket is included with this unit. Flow is published as curves rather than a single rating, so we confirm datasheet figures on request.
| Model | GFR300-15T AirTAC Filter Regulator NPT1/2 5um Manual Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, MPa 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 0.05 - 0.9 MPa (7 - 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 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. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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 clean, pressure-controlled air to the pneumatic cylinders that index and fill bottles on a beverage line, with the 5 um element protecting valve seals from water and fine debris.
Regulating supply pressure to the pick-and-place actuators and grippers on a carton-packaging conveyor, where stable downstream pressure keeps cycle motion consistent.
Serving a garage or maintenance-shop drop line that runs impact wrenches and air ratchets, filtering line water and holding a set pressure at the tool bench.
Size the unit by port and required flow: this 300-size unit with a 1/2 in NPT port sits above the 200 size (1/4 in) in the range, but because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering. Choose the drain to match your maintenance routine: manual (this unit) for scheduled bleed-downs, or automatic or differential-pressure draining where hands-off operation matters. Filter grade is 5 um here versus the 40 um standard element, so pick the grade your downstream equipment needs. The round MPa gauge is fitted; square embedded gauges and psi or bar scales are order options. Thread is NPT on this unit - PT is the standard thread and G/NPT are catalogue options to order - and the mounting bracket is included.
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 GFR-series flow as curves rather than a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow and full datasheet figures for the GFR300-15T on request before you order.
The manual drain on the GFR300-15T means collected water is bled from the polycarbonate bowl by hand on a schedule you control. It suits installations that are visited regularly. If the unit will sit unattended, the automatic (code A) or differential-pressure (blank) drain options are the better decode.
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.