The AirTAC AirTAC GFR400C10LC2WK Filter Regulator 3/8in Low-Pressure 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 GFR400C10LC2WK is a size-400 filter regulator in the GFR series: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is a low-pressure type with a 5 um filter element (code W), a differential-pressure drain that bleeds accumulated condensate automatically as flow passes through, a round external pressure gauge scaled in psi, a built-in reverse/check valve, and a mounting bracket included. The port is PT3/8 (3/8 in, PT thread as standard). Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR400 size is one step in a range spanning sizes 200, 300, 400 and 600, with port sizes from 1/8 in to 1 in, G (BSPP) and NPT thread options to order, a choice of 40 um standard or 5 um fine filtration, and gauge scales in MPa, psi or bar. Because flow is published as curves rather than a single rating, we confirm the datasheet and flow figures for your application on request.
| Model | AirTAC GFR400C10LC2WK Filter Regulator 3/8in Low-Pressure |
|---|---|
| Series | GFR400 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.
| GFR400 | G-series filter regulator, 400 body — sets the port range. |
|---|---|
| C1 | Port size See datasheet. This body offers 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 | GFR400 · See datasheet · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-C1 (two-unit set) |
A transfer line or machining cell running air-actuated clamps needs clean, moisture-picked air held at a low, stable setting. The 5 um element protects the clamp cylinders and valves from particulate, the low-pressure type regulator suits circuits set well below full line pressure, and the psi gauge lets the setter read the clamp pressure directly.
Packaging machines with air-driven diverters, sealers and case erectors run continuously and collect condensate in the supply line. The differential-pressure drain clears water as air flows through, the check valve holds the downstream setting when the upstream supply dips, and the 3/8 in port matches the machine's main air drop.
A test bench or lab rig supplying pneumatic instruments and small actuators needs fine filtration and a low, repeatable pressure setting. The 5 um element keeps particulate out of sensitive devices, the psi-scaled gauge gives a direct reading for test records, and the included bracket allows clean panel or frame mounting.
Choose the size and port step against the air demand of the circuit: this unit is size 400 with a PT3/8 (3/8 in) port, and the GFR range steps up through sizes 200, 300, 400 and 600 as port size and flow capacity grow. Filter grade is a real choice: 40 um is the standard element and 5 um (code W, fitted here) is the fine option for sensitive downstream components. Drain type is selectable: differential-pressure (fitted here), automatic (code A) or manual (code M). Gauge scale is selectable between MPa, psi and bar - this unit carries a round external gauge scaled in psi; the embedded square gauge is the standard alternative. Thread is PT as standard with G (BSPP) and NPT available as order options, and the bracket is included (code J would omit it).
One honest note on sizing: flow for this series is published as curves, not as a single rated figure, so we do not quote a flow number here. Ask us to confirm the datasheet and check the curve 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.
Flow for the GFR series is published as curves, not as a single rated figure, so we do not quote a flow number on the page. Ask us and we will confirm the datasheet and check the flow curve for the GFR400 at your supply pressure against your application before you order.
The W in the code sets the fine 5 um element instead of the standard 40 um, which suits sensitive downstream components. C2 sets a round external gauge scaled in psi; the embedded square gauge is the standard alternative, and MPa or bar scales can be ordered. The L in the code marks the low-pressure regulator type, and K confirms a built-in reverse/check valve.
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.