The AirTAC GFR300C10MJC2K AirTAC Filter Regulator PT3/8 Manual Drain 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 GFR300C10MJC2K is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one compact body. This configuration is the size 300 unit with a PT3/8 (3/8 in) port, a manual drain bowl, the standard 40 um filter element, a fitted round gauge reading in psi, and a built-in reverse (check) valve that holds downstream pressure if the upstream supply drops. The standard regulator covers an adjustment range of 0.05-0.9 MPa (7-130 psi), with a maximum inlet pressure of 1.0 MPa (145 psi) and an operating temperature of -5 to 70 C (non-freezing). No mounting bracket is included with this code.
This is a genuine AirTAC part. The GFR range spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options include automatic or differential-pressure drains, a 5 um filter element (code W), square or round gauges with MPa, psi or bar scales, G (BSPP) or NPT threads, and low-pressure regulator types. Flow is published as curves rather than a single rated figure, so we confirm flow and datasheet figures on request.
| Model | GFR300C10MJC2K AirTAC Filter Regulator PT3/8 Manual Drain |
|---|---|
| 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 clean, regulated air to the cylinders and vacuum generators on a carton-forming and sealing line, with the check valve holding set pressure during brief supply dips.
Supplying a bench-mounted clamping press where the operator sets a fixed working pressure on the psi gauge and drains the bowl during scheduled checks.
Regulating air to sorter divertors and stopper cylinders on a distribution conveyor, with the 40 um element protecting valves from water and pipe scale.
Choose the size 300 / PT3/8 step when your line runs 3/8 in piping and your flow demand sits in the middle of the GFR range; step up to size 400 or 600 for larger ports and higher flow, or down to size 200 for compact circuits. Drain type is a real choice: this code has a manual drain, which suits supervised installations where an operator bleeds the bowl on a routine; choose automatic or differential-pressure drain codes for unattended duty. The standard 40 um element suits general plant air; specify the W code for a 5 um element where downstream equipment needs finer filtration. The fitted round gauge reads in psi; square embedded gauges and MPa or bar scales are alternatives. Thread is PT as standard, with G (BSPP) and NPT available as order options, and brackets can be added if panel or wall mounting is needed.
Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application - supply pressure, downstream consumption and acceptable pressure drop - 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 GFR flow as curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number for this unit. Tell us your supply pressure and downstream air consumption and we will confirm the sizing from the datasheet curves on request before you order.
The M in the code selects a manual drain: condensate collects in the bowl and is bled by hand, which suits supervised installations; automatic (A) and differential-pressure (blank) drain codes are available for unattended duty. The K in the code fits a reverse (check) valve, which holds downstream pressure if the upstream supply is interrupted. This unit also carries a round gauge reading in psi and no mounting bracket.
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.