The AirTAC GFR300C15C2WK AirTAC Filter Regulator PT1/2, 5 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 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 AirTAC GFR300C15C2WK is a size 300 filter regulator: it removes water and particulate from compressed air and sets downstream pressure in one body. This configuration carries a 1/2 in PT port, a fine 5 um filter element (code W), a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and a standard regulator with an adjustment range of 0.15-0.9 MPa (20-130 psi). It is fitted with an external round gauge scaled in psi, a reverse/check valve (code K) that holds downstream pressure when the supply is lost, and a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits this size in the G-series range.
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of 40 um standard or 5 um fine filtration, differential-pressure, automatic or manual drains, embedded square or external round gauges scaled in MPa, psi or bar, and PT, G or NPT threads. Flow figures for this series are published as curves rather than a single rating, so ask us to confirm sizing and datasheet details for your application before ordering.
| Model | GFR300C15C2WK AirTAC Filter Regulator PT1/2, 5 um |
|---|---|
| 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) |
Feeds clean, regulated air to the tool-clamp and chip-clearing circuits of a CNC machining centre, with the 5 um element protecting spool valves from fine particulate and the check valve holding clamp pressure if the shop air drops.
Sits ahead of the directional valves driving carton-forming and case-sealing cylinders on a packaging conveyor, keeping set pressure stable through the machine cycle while the differential-pressure drain clears condensate during continuous running.
Prepares air for the pneumatic clamps and grippers on a robotic welding cell, where the round psi gauge lets technicians verify set pressure at the fixture and the check valve prevents fixture relaxation during a supply interruption.
Step through the real, decodable choices. Size 300 with a PT1/2 port sits mid-range in the GFR family; step up to 400 or 600, or down to 200, if your line's air demand points to a different port. Drain type matters: this unit uses the differential-pressure drain (the default), which needs airflow past the bowl to purge condensate - choose an automatic drain (code A) for idle lines or a manual drain (code M) where you want controlled purging. Filtration is 5 um here (code W) against the 40 um standard element; pick 5 um for downstream valves and instruments that tolerate less particulate. The gauge on this configuration is an external round gauge scaled in psi; embedded square gauges and MPa or bar scales are the alternatives. Thread is PT as standard, with G (BSPP) and NPT available as order options, and the bracket is included (code J would omit it).
One honest routing note: AirTAC publishes flow for this series as curves, not a single rated figure, so we cannot quote a rated flow number. Send us your application's flow and pressure requirements and we will confirm sizing against the datasheet curves 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 GFR series as performance curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number for this unit. Send us your application's flow and pressure requirements and we will confirm sizing against the datasheet curves on request before you order.
The W in the code specifies the fine 5 um filter element instead of the 40 um standard grade - the right choice when downstream valves or instruments need cleaner air; the 40 um element is available as an alternative configuration. The K specifies a reverse/check valve, which holds downstream pressure if the upstream supply fails. Both are decodable order options, so specify the code you need and we will confirm the exact configuration.
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.