The AirTAC GFR300C15ALJF2WT AirTAC Filter Regulator 1/2 NPT 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 GFR300C15ALJF2WT 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 NPT port, fitted with the 5 um filter element (code W instead of the standard 40 um), an automatic drain on the bowl, and the low-pressure regulator type. The embedded square gauge reading in psi is included, the bowl is metal, and the unit is supplied without a mounting bracket. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. No reverse/check valve is fitted.
This is a genuine AirTAC part. The GFR filter-regulator line spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options include manual or differential-pressure drains, the 40 um standard element, alternative gauge scales (MPa, psi or bar) and G (BSPP) or NPT threads in place of the PT standard. Because flow is published as curves rather than a single rated figure, we confirm the datasheet and flow figures for your application on request.
| Model | GFR300C15ALJF2WT AirTAC Filter Regulator 1/2 NPT |
|---|---|
| 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) |
On a bottling line, the pneumatic gates and clamp cylinders need clean, dry air held at a steady, moderate pressure. This filter regulator conditions the branch feeding those actuators, with the automatic drain handling condensate between washdown shifts.
A CNC machining center's tool-change and clamping circuits depend on air free of water and swarf-carrying particulate. The 5 um element on this unit protects those components, while the regulator holds the circuit pressure the machine builder specified.
Textile weaving sheds run many looms off a shared compressor, so each loom benefits from its own conditioning point. This filter regulator at the loom inlet removes moisture and lint-scale particulate and keeps the loom's air jets and cylinders at a stable set pressure.
Step up or down through the GFR sizes (200 / 300 / 400 / 600) and their port sizes (06 to 25) according to the air demand of the circuit - the 300 size with a 1/2 in port sits in the middle of the range. Drain choice matters: automatic (as on this unit) suits unattended installations, manual drain suits stations visited during routine checks, and the differential-pressure drain is the default. Filter grade is 40 um standard or 5 um (code W) for finer protection - this unit carries the 5 um element. Gauge scale is selectable (MPa, psi or bar); this unit reads psi on the embedded square gauge, with an external round gauge available as an option. Thread is PT as standard, with G (BSPP) and NPT as order options - this unit is NPT. Brackets are optional; this unit ships without one. 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. 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 curves, not as a single rated figure, so we do not quote a l/min, m3/h or SCFM number here. Tell us your application and we will confirm the flow figures from the datasheet on request so you can size the unit correctly.
The GFR series is catalogued with a 40 um element as standard; the W code on this model selects the finer 5 um element for applications that need tighter protection. The A code selects the automatic drain, which expels collected condensate without manual intervention - useful where the unit is not checked daily. Both choices are decodable from the model code, and the standard 40 um / manual or differential-drain variants are available if your duty is lighter.
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.