The AirTAC GFR400C10MNWT AirTAC Filter Regulator NPT3/8 5um 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 GFR400C10MNWT is an AirTAC GFR400 filter regulator: a single body that removes water and particulate from compressed air and then regulates downstream pressure. This size 400 configuration carries a 3/8 in NPT port, a 5 um filter element (the finer W grade, versus the standard 40 um), and a manual drain, so an operator drains the bowl on a routine rather than automatically. No gauge is fitted on this variant, the regulator is the standard type with a 0.05-0.9 MPa (7-130 psi) setting range, and a mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits this size in the series.
This is a genuine AirTAC part. The GFR filter-regulator family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, and is ordered with a choice of drain type, filter grade, gauge and scale, thread (PT standard, G and NPT as options), and bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR400C10MNWT AirTAC Filter Regulator NPT3/8 5um |
|---|---|
| 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) |
On a machining centre, this 3/8 in filter regulator sits ahead of the pneumatic clamps and tool-change actuators. The 5 um element keeps fine particulate out of the directional valves, while the regulator holds a steady clamp pressure; the manual drain is checked as part of daily machine housekeeping.
On a filling line, the unit conditions and regulates the air feeding cylinder-driven gates, stoppers and lifters between the plant ring main and the machine. The 3/8 in NPT port matches typical machine drops, and the manual drain bowl is emptied during scheduled line cleaning.
In an R&D or quality lab running pneumatic test benches and instrument panels, this filter regulator gives a clean, finely filtered (5 um) and adjustable supply to sensitive fixtures and gauges, with the bracket allowing tidy panel mounting and the manual drain emptied after each test session.
Choose the size and port step (200 through 600, 1/8 to 1 inch) against the air demand of the circuit; for this model that is size 400 with a 3/8 in NPT port. Drain type is a real decision: manual (as here) needs a routine drain check, automatic drains on its own, and the differential-pressure default drains under a pressure drop. Filter grade is 40 um standard or 5 um with the W code - this unit carries the 5 um element for finer protection of downstream valves and instruments. Gauge and scale (square embedded or external round, MPa/psi/bar) are selectable, and this variant is ordered without a gauge. Thread is PT as the series standard with G (BSPP) and NPT as order options - this code is the NPT version. A bracket is included; J removes it. Flow is published as curves, not a single rating, so send us your flow and pressure requirements 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 one number. Tell us your working pressure and air demand and we will confirm the flow from the datasheet and check the size 400 / 3/8 in selection against your application before you order.
The M in the code is a manual drain: condensate collects in the bowl and an operator drains it on a routine, instead of an automatic or differential-pressure drain doing it by itself. The W is the 5 um filter element, the finer option over the standard 40 um, suited to protecting valves and instruments. This variant is ordered without a gauge; gauge options with MPa, psi or bar scales are available in the series.
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.