The AirTAC GFR30015LJF3WT AirTAC Filter Regulator NPT1/2, 5 um 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 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 GFR30015LJF3WT is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in a single body. It removes water and particulate from compressed air through a 5 um element (the fine grade, one step below the 40 um standard), then regulates downstream pressure with the low-pressure regulator type. The 15 port gives a 1/2 in NPT connection, the square embedded gauge reads in bar, and the differential-pressure bowl drains automatically as flow passes through, so no manual draining routine is needed. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits size 300; only size 600 units use an aluminium bowl.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, drain choices (differential-pressure, automatic or manual), 40 um or 5 um filtration, gauge and thread options. Flow figures for this series are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR30015LJF3WT AirTAC Filter Regulator NPT1/2, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure 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 — square, bar 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 3 | Gauge scale: bar. 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) |
Fixture clamps and swing cylinders on a CNC cell need clean, moisture-picked air held at a gentle, stable setting. The 5 um element protects the clamp seals from fine particulate while the low-pressure regulator holds the holding force the fixture was designed for.
Heat-seal and tuck stations on a packaging line run on air cylinders that do not need full line pressure. This filter regulator feeds the sealing heads with filtered air at a low set pressure, and the differential drain keeps condensate off the valve seats without operator attention.
Diverters, pushers and stop stations along a conveyor line cycle constantly and are sensitive to dirt in the air. A 1/2 in supply with 5 um filtration and regulated low pressure keeps the gate cylinders acting smoothly and extends the life of the directional valves upstream of them.
Size and port are the first decision: step up from 200 through 600 as your air demand grows, and match the connection - this unit is 1/2 in NPT (PT is the standard thread for the series; G and NPT are the options to order). The 5 um element here is the right pick when downstream equipment is sensitive to fine particles or carryover; choose 40 um where coarser protection is enough. The differential-pressure drain suits lines with steady flow; an automatic drain is worth specifying for intermittent duty. The square gauge is fitted and reads in bar; an external round gauge and MPa or psi scales are alternatives. This is the low-pressure (L) type, intended for lower set pressures than the standard regulator, with no bracket supplied (J). Flow for this series is published as curves, not a single rating, so send us your demand figures and we will confirm sizing against the datasheet 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 curves, not as a single rated number, so we do not quote a figure here. Tell us your line pressure, set pressure and air demand, and we will confirm the flow from the datasheet on request so you can size it correctly.
The W in the code specifies the 5 um filtration grade - the finer option versus the 40 um standard - which suits valves and cylinders that need cleaner air. The drain code is blank, meaning the differential-pressure type: condensate is expelled automatically as air flows through, with no manual drain valve to operate.
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.