The AirTAC AirTAC GFR30010C3TK Filter Regulator 3/8 NPT 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 PT3/8" 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 GFR30010C3TK is a 300-size filter regulator that cleans compressed air and holds a stable downstream pressure in one body. This configuration carries a 3/8 in NPT port, a 40 um standard filtration element, and a differential-pressure drain that bleeds collected water automatically whenever the pressure differential across the element is high enough. The standard regulator covers a 0.15-0.9 MPa (20-130 psi) setting range, a round external gauge with a bar scale is fitted so you can read the set pressure directly, and a reverse/check valve (code K) is built in. The polycarbonate bowl suits this 300 size, and the mounting bracket is included.
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch. Within the family you can order manual or automatic drains instead of the differential-pressure type, a 5 um element (code W) instead of 40 um, different gauge scales, G (BSPP) or NPT threads in place of the PT standard, or a no-bracket version. Rated flow for this series is published as curves rather than a single figure, so ask us and we will confirm the datasheet and sizing for your application on request.
| Model | AirTAC GFR30010C3TK Filter Regulator 3/8 NPT |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT 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 — round, bar scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. |
|---|---|
| 10 | Port size PT3/8". 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Mounted at the drop to a CNC machining centre, the unit removes water and chips of particulate from the shop air and holds the regulated pressure the machine's pneumatic tool-changer and clamping circuits were designed around. The bar-scale gauge lets the maintenance technician verify the set point at a glance, and the check valve keeps the circuit pressurised during brief supply dips.
On a carton-forming and sealing line, this filter regulator feeds the cylinders and vacuum generators that erect, fill and seal cartons. The 40 um element stops scale and pipe debris reaching the valve spools, the differential-pressure drain clears condensed water without a daily manual blow-down, and the stable regulated output keeps sealing cylinders cycling at a consistent speed.
At a paint booth's point-of-use station, the unit dries and filters the air feeding spray guns and air-driven agitators while holding the regulator at the pressure the gun manufacturer specifies. The included bracket fixes the unit to the prep-station panel, the round bar gauge gives the operator a clear pressure readout, and the polycarbonate bowl shows collected water at a glance.
Size up GFR by the port step first: 200 through 600 map to larger ports and higher flow capacity, so pick the size whose flow curve covers your demand with margin - we will read the curve against your consumption if you send the numbers. Then set the options: drain type (differential-pressure as here, automatic, or manual), element grade (40 um standard, 5 um where finer filtration is needed), gauge scale (MPa, psi or bar - this unit carries a round bar-scale gauge), thread (PT is the catalogue standard; G/BSPP and NPT are order options, and this unit is NPT), and bracket (included here, code J deletes it). A reverse/check valve (K) holds downstream pressure if the supply drops.
One honest note on sizing: AirTAC publishes flow for this series as curves, not a single rated number, so we do not quote a rated flow figure. Tell us your line pressure, set pressure and air consumption and we will confirm the correct size from the datasheet before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as performance curves rather than a single rated figure, so we do not quote a rated flow number. Send us your inlet pressure, set pressure and air consumption, and we will confirm the sizing from the datasheet on request before you order.
K is the reverse/check valve option: a valve fitted inside the unit that blocks reverse flow. If the upstream supply fails or drops, the check valve helps hold the regulated downstream pressure instead of letting it bleed back through the unit - useful on circuits where a momentary supply dip must not release clamps or stop actuators.
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.