The AirTAC GFR300C10MJC3T AirTAC Filter Regulator NPT3/8 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 GFR300C10MJC3T is a 300-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration carries a 3/8 in NPT port, a 40 um standard filter element, a manual drain for emptying the bowl by hand, and a fitted round pressure gauge with a bar scale. The standard regulator adjusts from 0.05 to 0.9 MPa (7-130 psi), maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits the 300 size, and the J code means no mounting bracket is included.
This is a genuine AirTAC part from the GFR300 series, one of four sizes (200/300/400/600) spanning port sizes from 1/8 to 1 inch. Across the GFR range you can order automatic, manual or differential-pressure drains, a 5 um (W) element instead of the 40 um standard, square or round gauges with MPa, psi or bar scales, a reverse/check valve, a bracket, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C10MJC3T AirTAC Filter Regulator NPT3/8 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) |
Filter and regulate the compressed air feeding a pneumatic press or clamping station on an assembly line, with the bar-scale gauge giving the operator a direct pressure readout and the manual drain emptied during scheduled checks.
Condition the air supply to diverters, pushers and packaging cylinders on a packaging conveyor, keeping water and debris out of the valves while holding a set pressure for consistent cylinder action.
Feed filtered, regulated air to gripper valves on a robotic pick-and-place cell, where a stable set pressure protects the gripper circuit and the 3/8 in port matches the cell's drop line.
Start with the port step: the 300 size with its 3/8 in port sits in the middle of the GFR range (200/300/400/600), so match it to the line size and the flow your circuit needs, stepping up or down a size if the curve requires it. Then choose the drain: manual (this unit) means an operator drains the bowl by hand and suits duties with regular walk-by checks; automatic or differential-pressure drains suit unattended installations. Choose the 40 um standard element for general air preparation, or the 5 um (W) option for finer protection. This unit ships configured with a round bar-scale gauge; square gauges and MPa or psi scales are the other catalogue choices. Thread is NPT here; PT is the standard thread and G is also available to order. A bracket can be added if you need panel fixing (the J code on this unit omits it). Because flow is published as curves and not a single rating, 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, not as a single rated figure, so there is no one l/min or SCFM number we can quote honestly. Tell us your application and we will confirm the flow figures from the datasheet on request, and help you check whether the 300 size and its 3/8 in port suit your circuit before you order.
The M code in GFR300C10MJC3T specifies a manual drain: collected water is released from the bowl by hand, which suits installations checked on a regular routine. Note that with a manual drain the regulator adjusts from 0.05 to 0.9 MPa (7-130 psi). If the unit will sit unattended, the catalogue also offers automatic and differential-pressure drain variants of the same filter regulator.
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.