The AirTAC GFR300C10MLJF1WTK AirTAC Filter Regulator NPT3/8 5um 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 GFR300C10MLJF1WTK is a filter regulator: water and particulate filtration plus pressure regulation combined in a single body, with a drain bowl but no lubricator. This size 300 unit carries a 3/8 in NPT port, a 5 um filter element (the finer of the two published grades), a manual drain, a metal bowl, an embedded square gauge scaled in MPa, a built-in reverse/check valve, and the low-pressure regulator type. It is supplied without a mounting bracket.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, drain choices (manual, automatic or differential-pressure), 40 um standard or 5 um filtration, gauge and thread options, and standard or low-pressure regulator types. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow for this family is published as curves rather than a single rating, so we confirm the datasheet and sizing figures on request.
| Model | GFR300C10MLJF1WTK AirTAC Filter Regulator NPT3/8 5um |
|---|---|
| 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 a small pneumatic press or clamping fixture that needs filtered air regulated down to a reduced working pressure; the 5 um element protects the valve train and the built-in check valve holds the circuit if the supply line drops.
Air preparation for laboratory coating, sampling or dispensing equipment, where fine 5 um filtration and steady low-pressure regulation keep nozzles and instruments clean and the MPa gauge gives a clear setpoint reference.
Supplying cylinders and grippers on a packaging or conveyor line; the manual drain lets an operator bleed accumulated water from the metal bowl at shift start, keeping moisture out of the downstream valves.
The real choices on this family are the size and port step (200/300/400/600, 1/8 in to 1 in) matched to your line's flow, the drain type (manual, automatic or differential-pressure), the filter grade (40 um standard or 5 um as fitted here), the gauge and its scale (MPa, psi or bar), the thread (PT standard, with G and NPT as order options), the regulator type (standard or low-pressure) and whether a bracket is included. This unit is already fixed at size 300, NPT3/8, 5 um, manual drain, low-pressure type, square MPa gauge, check valve fitted, no bracket. 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 this family as curves, not as a single rated figure, so we do not quote a number here. Ask us and we will confirm the flow curve and datasheet figures for the size 300, NPT3/8 configuration against your application before you order.
This unit is fitted with a manual drain: an operator opens it periodically to remove accumulated water from the metal bowl. The family also offers an automatic drain that discharges condensate by itself, and a differential-pressure drain as the default; we can quote any of the three on the same size and port.
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.