The AirTAC GFR300C15LF2WT AirTAC Filter Regulator, NPT1/2, 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 GFR300C15LF2WT is a size 300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration carries a 1/2 in NPT port, a 5 um filter element (the W grade, finer than the 40 um standard), a differential-pressure drain that bleeds collected condensate automatically as pressure drop builds, and a low-pressure regulator type for circuits that run below standard regulating ranges. It ships as specified with an embedded square gauge reading in psi, a metal bowl, a mounting bracket, and no reverse/check valve. Maximum working (inlet) pressure is 1.0 MPa (145 psi), with an operating temperature range of -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR filter-regulator family spans sizes 200, 300, 400 and 600 with stepped port sizes, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, gauge and thread options, and standard or low-pressure regulator types. Because the exact regulation range of this low-pressure configuration and the flow figures for the family are published as curves rather than a single rating, we confirm the datasheet and sizing against your application on request.
| Model | GFR300C15LF2WT AirTAC Filter Regulator, NPT1/2, 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) |
Fixture clamps and swing cylinders on an automotive weld cell need air that is free of water and swarf and held at a steady, lower-than-standard pressure so parts are held consistently without over-clamping. A filter regulator at each station drop conditions the supply before the valve manifold.
Seal and press cylinders on a food packaging line are sensitive to moisture carryover and pressure drift, which shows up as inconsistent seals. Conditioning the branch feed with a filter regulator and checking the psi gauge during changeover keeps the seal station supplied with clean, settled air.
Bench-top purge, drying and air-knife stations in a test laboratory run at modest regulated pressures where a standard regulator overshoots. A low-pressure type filter regulator with a 5 um element protects the nozzles and fittings from particulate while holding the gentle setting the process needs.
Choose the size by port and flow: this unit steps up to a 1/2 in NPT port in the 300 frame, so match it to line size and the air demand of the downstream circuit. Pick the drain to suit attendance: differential-pressure (this unit) needs no operator action, automatic drains on a cycle, and manual suits periodically attended panels. Select 40 um for general protection or the 5 um W grade, as fitted here, where finer particulate matters. Gauge scale (MPa, psi or bar), thread (PT standard, with G and NPT as order options - this unit is NPT), bracket and reverse/check valve are all decodable choices. One honest routing note: flow is published as curves, not a single rated figure, and the regulation range of the low-pressure type is not stated in the material we hold - so ask us to confirm sizing and range 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 filter-regulator flow as performance curves rather than a single rated figure, so we do not quote a Cv, l/min or SCFM number. Send us your line size, upstream pressure and the air demand of the downstream circuit, and we will confirm the sizing from the datasheet curves on request before you order.
The W code selects the 5 um element instead of the 40 um standard, so finer particulate is removed from the air before it reaches the regulator and your equipment. The differential-pressure drain is the default drain type: condensate collected in the bowl is expelled automatically as the pressure differential across the element builds, with no manual draining required. If you would rather drain on a cycle or by hand, automatic (A) and manual (M) versions of the same size are available.
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.