The AirTAC GFR400C10LNWT AirTAC Filter Regulator 3/8 in 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 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 GFR400C10LNWT is an AirTAC GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This size 400 unit carries a 3/8 in NPT port, a 5 um filter element (the W grade, finer than the 40 um standard), a differential-pressure drain that discharges collected condensate based on the pressure differential across the unit, and the low-pressure (L) regulator type for circuits that run below standard line pressure. No pressure gauge is fitted (code N) and a mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the service temperature range is -5 to 70 C, non-freezing. The bowl on size 400 units is polycarbonate (PC); only size 600 uses an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, standard or low-pressure regulation, gauge options, and G(BSPP) or NPT threads alongside the PT standard. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR400C10LNWT AirTAC Filter Regulator 3/8 in NPT |
|---|---|
| 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) |
Filter and regulate the air feeding spray guns and air-assisted applicators on a finishing line, with the 5 um element catching pipe scale and condensed water before they reach the finish, and the low-pressure type suiting circuits run below standard line pressure.
Give a lab or test-rig manifold a filtered, adjustable low-pressure air supply where the circuit runs well below standard line pressure and needs a clean feed, with the differential-pressure drain clearing collected condensate during operation.
Supply clean, regulated air to low-pressure actuator circuits on filling and cartoning machines, with the differential-pressure drain bleeding off collected water as the line runs and the included bracket simplifying mounting on the machine frame.
Choices that matter on this family: step size (200/300/400/600) and port (1/8 to 1 in) against the flow your line needs; drain type - differential-pressure (fitted here), automatic (A) or manual (M); filter grade - 40 um standard or 5 um with the W code, which is what this unit carries; gauge - this configuration ships without one (code N), and variants with an embedded square gauge or an external round gauge scaled in MPa, psi or bar can be ordered; thread - PT is the standard, with G(BSPP) and NPT as order options (this unit is NPT); and the low-pressure L type for circuits below standard line pressure, whose exact regulation range is not published, so we confirm it from the datasheet. Flow is published as curves, not a single rating, so send us your pressure and flow conditions and we will confirm sizing against the datasheet before you order.
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 GFR series as curves rather than a single rated figure, so we do not quote a number here. Tell us your working pressure and required flow and we will confirm sizing from the datasheet for the GFR400 size before you order.
This configuration carries the N code, so no gauge is fitted. GFR units can be ordered with an embedded square gauge or an external round gauge scaled in MPa, psi or bar - ask for the gauge variant if you want a local pressure reading. Note also that the 5 um W-grade element fitted here is finer than the 40 um standard, for circuits that need cleaner air.
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.