The AirTAC GFR300C10MLJF2WK AirTAC Filter Regulator PT3/8, 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 GFR300C10MLJF2WK is a 300-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built for a 3/8 in PT port, carries a 5 um filter element (code W) for finer filtration than the 40 um standard, and drains condensate by hand via its manual drain - a good fit where the unit is easily reached or where automatic draining is not wanted. It is a low-pressure type regulator, so it is intended for applications set well below standard line pressures; the exact adjustment range for this variant is not published in the data we hold, and we confirm it on request. The fitted square embedded gauge reads in psi, a reverse/check valve is included to hold downstream pressure, and the unit is supplied without 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 bowl on this unit is metal.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600, with port sizes from 1/8 in to 1 in, a choice of manual, automatic or differential-pressure drains, 40 um or 5 um filtration, square or round gauges with MPa, psi or bar scales, G (BSPP) and NPT thread options alongside the PT standard, and bracket or no-bracket mounting. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm flow and any other datasheet figure against your application before ordering.
| Model | GFR300C10MLJF2WK AirTAC Filter Regulator PT3/8, 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) |
Filtering and regulating the air feeding clamp and hold-down cylinders on an assembly press, where the low-pressure type regulator suits circuits set well below standard line pressure and the check valve helps hold the clamped position if upstream supply dips.
Conditioning the air supply to tape heads and flap-tuck cylinders on a carton-sealing conveyor station, with the 5 um element protecting the small pilot valves from particulate and the manual drain suiting a unit mounted at eye level for daily checks.
Supplying clean, regulated low-pressure air to pneumatic actuators on laboratory automation benches and sample-handling rigs, where the psi-reading square gauge lets technicians set and verify pressure in familiar units and the 5 um grade suits sensitive downstream components.
Start with size and port: the 300 size with a 3/8 in PT port suits lines where a 1/4 in unit would restrict flow, but the right step depends on the air demand of the circuit - flow for the GFR series is published as curves, not a single rating, so ask us to check sizing against your application before ordering. This unit is the low-pressure type, so confirm your set pressure falls in the low-pressure band and let us confirm the exact adjustment range. The 5 um element (code W) is the finer choice over the 40 um standard where downstream valves or instruments need cleaner air. The manual drain means someone bleeds the bowl periodically - choose automatic or differential-pressure drain codes if the unit will be hard to reach. The square gauge here reads psi; MPa and bar scales and an external round gauge are alternatives. Thread is PT as standard, with G (BSPP) and NPT available to order, and this configuration omits the mounting bracket.
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 rather than a single rated figure, so we do not quote a rated flow number. Tell us your application and required flow, and we will confirm the figures from the datasheet and check the 300 size with its 3/8 in port is the right step before you order.
The M in the code specifies a manual drain: condensate collected in the metal bowl is released by hand, which suits units mounted where they are easy to reach; automatic and differential-pressure drain variants are available in the same series. The L code marks this as the low-pressure regulator type, intended for set pressures well below standard line pressure - the exact adjustment range for this variant is not published in the data we hold, so we confirm it on request.
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.