The AirTAC GFR300C10MLC2WTK AirTAC Filter Regulator NPT3/8, 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 GFR300C10MLC2WTK is an AirTAC GFR300 filter regulator: a single body that removes water and particulate from compressed air and then regulates the pressure delivered downstream. This configuration is built around a 3/8 in NPT port, a 5 um filter element (the finer of the two catalogue grades), a manual drain on the metal bowl, and the low-pressure regulator variant. A round pressure gauge reading in psi is fitted, a reverse/check valve is built in, and a mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part in the GFR300 size class, one of four sizes (200/300/400/600) that step up in port and flow. Across the GFR range you can order standard or low-pressure regulation, 40 um or 5 um filtration, differential-pressure, automatic or manual drains, embedded square or external round gauges in MPa, psi or bar scales, PT, G or NPT threads, and with or without brackets. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C10MLC2WTK AirTAC Filter Regulator NPT3/8, 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) |
Point-of-use water and particle removal plus pressure control on the air drop feeding carton-sealing and case-erector cylinders on a packaging line, with the manual drain emptied during shift checks.
Conditioning the supply to pneumatic workpiece clamps and tool-change actuators on a CNC machining centre, where the 5 um element protects sensitive valve spools.
Clean, regulated air to control valve positioners and pneumatic actuators on a process skid, with the low-pressure regulator variant and built-in check valve suiting a lower controlled-pressure circuit.
Start with size and port: the GFR family steps through 200/300/400/600, each with its own port size, matched to the air demand of the circuit - this unit is the 300 size with a 3/8 in NPT port. Next, the drain: manual means an operator opens the bowl drain from time to time, while automatic and differential-pressure drains discharge condensate without attention; manual suits a unit where someone is already at the machine. Filter grade is 40 um standard or 5 um (code W, fitted here) for finer protection of downstream components. Gauge options are the embedded square gauge or an external round gauge, scaled in MPa, psi or bar - this unit carries the round gauge reading in psi. Thread is PT as standard with G and NPT as order options; brackets are optional across the family and included here. One honest note: AirTAC publishes flow as curves, not a single rated figure, and the adjustment range of the low-pressure variant is not listed on our sheet - ask us to confirm both 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 GFR series as curves rather than a single rated number, so we do not quote a figure here. Tell us your supply pressure and the air demand of the equipment downstream, and we will confirm the sizing from the datasheet before you order.
The L code marks the low-pressure regulator variant: it is intended where downstream equipment needs a lower controlled pressure than the standard type is set up for. The exact adjustment range for this variant is not published on our sheet, so we confirm it from the AirTAC datasheet 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.