The AirTAC GFR300C10MJF3WT 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 GFR300C10MJF3WT is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is built for a 3/8 in NPT port, carries the finer 5 um filter element, and uses a manual drain, so accumulated condensate is purged by hand. It is fitted with an embedded square gauge scaled in bar, has no reverse/check valve, and is supplied without a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi), the regulator adjusts from 0.05 to 0.9 MPa (7-130 psi), and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The G-series filter regulator family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and catalogue options include automatic or differential-pressure drains, a 40 um standard element, alternative gauge scales (MPa, psi, bar), an external round gauge, G or NPT thread in place of the PT standard, and a mounting bracket. Flow is published as curves rather than a single rating, so we confirm flow and datasheet figures on request.
| Model | GFR300C10MJF3WT 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) |
Conditioning the air feeding a bench-mounted pneumatic press in a small stamping or riveting cell: the 5 um element keeps pipe scale and wear debris out of the press valve while the regulator holds the working pressure the operator has set.
Filtering and regulating the supply to cylinder-driven carton sealing and case-packing stations, where the manual drain lets maintenance purge collected water at the start of each shift before it reaches the actuators.
Mounting at the inlet of a CNC machining centre's air preparation stack to clean and regulate shop air before it feeds tool-change cylinders, clamps and pneumatic cleaning jets on the machine.
Size the unit by port and air demand: the GFR300 sits between the smaller GFR200 and the larger GFR400/600, which step through ports from 1/8 to 1 in across the family. The choices decodable on this code are: drain type (manual here; automatic and the default differential-pressure drain are alternatives), filter grade (5 um as coded with W; 40 um is the standard element), gauge scale (this unit's embedded square gauge reads bar; MPa and psi scales exist, and an external round gauge is optional), thread (PT is the AirTAC standard with G and NPT as order options - this model is NPT), and bracket (code J means none fitted). 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 the GFR300 series as curves rather than a single rated figure, so we do not quote a number. Ask us and we will confirm the flow and datasheet figures for this 3/8 in NPT model against your application before you order.
The M in the code means manual drain: condensate collected in the bowl must be drained by hand on a planned schedule. If you prefer hands-off drainage, the GFR family also offers an automatic drain (code A) and a differential-pressure drain (the default when no drain code is given) as catalogue options.
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.