The AirTAC GFR30010MJC3WT AirTAC Filter Regulator 3/8 NPT 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/8" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR30010MJC3WT is a GFR300 filter regulator: water and particulate filtration plus downstream pressure regulation in a single body. This configuration has 3/8 in NPT ports, a 5 um filter element (the finer of the two catalogue grades), a manual drain on the PC bowl, a round pressure gauge reading in bar, and no mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulator covers 0.05-0.9 MPa (7-130 psi) set output, and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part from the GFR filter-regulator family, published in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in. Across the family you can order differential-pressure, automatic or manual drains, a 40 um or 5 um element, embedded square or external round gauges with MPa, psi or bar scales, PT, G or NPT threads, and brackets as needed. Flow is published as curves rather than a single rating, so we confirm the datasheet and sizing figures on request.
| Model | GFR30010MJC3WT AirTAC Filter Regulator 3/8 NPT 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, bar 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 0.05 - 0.9 MPa (7 - 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. |
|---|---|
| 10 | Port size PT3/8". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Clean, regulated air to fixture clamps and tool-change cylinders on a machining centre, with the 5 um element protecting tight-tolerance valves from particulate and water carryover.
Point-of-use conditioning at a spray booth or finishing line, where the 5 um grade and a stable regulated setpoint support consistent finish quality on the applicators.
Filtered and regulated supply to carton-sealer and case-erector cylinders on a packaging conveyor, with the manual drain bled during scheduled changeovers.
Size up by port and expected demand: this unit is the 300 size with 3/8 in NPT ports; step to 400 or 600 for larger lines or down to 200 for compact drops, and we will check the flow curve against your application before you order. Choose the drain to suit access: manual (as here) needs periodic bleeding, automatic suits unattended duty, and differential-pressure drains only when the element loads up. The 5 um element (code W) suits finer air-quality needs; the 40 um standard element suits general protection. Gauge options are the embedded square type or an external round gauge, in MPa, psi or bar scales - this unit carries a round bar gauge. Thread is NPT here; PT is the standard catalogue thread and G (BSPP) is also an order option. Brackets are optional - this configuration omits the 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 GFR300 series as curves, not as a single rated number, so we do not quote a figure that could mislead your sizing. Tell us your line pressure, set pressure and expected air demand, and we will confirm the flow curve and datasheet figures for this exact 3/8 in NPT configuration on request before you order.
The M in the code specifies a manual drain on the PC bowl: condensate is released by hand at service intervals rather than automatically. Choose manual where the unit is accessible and maintenance rounds are regular; choose the automatic or differential-pressure drain option where the installation is unattended or hard to reach. The manual-drain version also carries the wider 0.05-0.9 MPa (7-130 psi) regulation range.
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.