The AirTAC GFR300C15AF2WG AirTAC Filter Regulator G1/2 5 um Auto Drain 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 GFR300C15AF2WG is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body, so one unit does the job of a separate filter and regulator. This configuration is decoded as follows: size 300 with a G1/2 (BSPP) port, a fine 5 um filtration element (the W grade, against the 40 um standard), an automatic drain that ejects collected condensate without manual attention, an embedded square gauge reading in psi, a standard regulator with an adjustment range of 0.15-0.9 MPa (20-130 psi), and a mounting bracket included. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with ports from 1/8 in up to 1 in, and can be ordered with differential-pressure, automatic or manual draining, a 40 um or 5 um element, gauge scales in MPa, psi or bar, and PT (standard), G or NPT threads. Flow is published by AirTAC as curves rather than a single rated figure, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C15AF2WG AirTAC Filter Regulator G1/2 5 um Auto Drain |
|---|---|
| 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. |
|---|---|
| C1 | 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-C1 (two-unit set) |
Feeding clean, pressure-stabilised air to the supply drops that serve paint application equipment in a vehicle body shop, with the 5 um element and automatic drain keeping water and grit out of the finishing air without daily draining rounds.
Regulating the air feeding the pneumatic cylinders that stop, index and divert bottles on a beverage bottling conveyor, so actuators along the line see one consistent set pressure from a single G1/2 supply.
Supplying filtered, regulated air to the pneumatic clamps and tool-change cylinders on a CNC machining cell, where the square psi gauge gives the operator a direct read of set pressure at the machine.
Start with the port and size step: this unit is size 300 with a G1/2 port; smaller and larger GFR sizes (200/400/600) step the port and flow capacity up or down, so match the step to your line's air demand. Choose the drain to suit attendance: automatic (this model) suits unmanned or hard-to-reach installations, manual suits attended daily checks, and the differential-pressure default drains on a pressure drop. Choose the element grade: 40 um is the standard general-purpose grade, while the 5 um grade fitted here suits finer downstream equipment. Gauge scale (MPa, psi or bar) and thread (PT is the standard; G and NPT are order options) are decodable choices, and the bracket is included on this configuration. 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. 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 rather than a single rated figure, so there is no one rated flow number we can honestly quote. Tell us your application and required flow, and we will confirm the sizing against the datasheet curves on request before you order.
The A in this code specifies an automatic drain, which ejects collected condensate from the bowl without anyone opening it - useful on unmanned cells or awkward mounting positions. The alternatives in the GFR range are the manual drain (drained by hand during checks) and the differential-pressure drain (the default, which drains on a pressure drop); each is a separate order code.
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.