Airtac GFR Filter Regulator GFR400C10AJNWK
The AirTAC GFR Filter Regulator GFR400C10AJNWK 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.
- TypeFilter regulator
- Port sizeSee datasheet
- Regulating range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade40 µm
- DrainDifferential-pressure drain
- Bowl materialPC
- Pressure gaugeFitted
- ThreadPT
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac GFR Filter Regulator GFR400C10AJNWK
The GFR400C10AJNWK is a genuine AirTAC G-series filter regulator with the fine 5 um element (W) and a built-in check (reverse) valve (K): water and particulate filtration, downstream pressure regulation, fine element protection, and reverse-flow blocking in one body. This size 400 configuration carries a 3/8 inch PT port, an automatic drain on the PC (polycarbonate) bowl, no mounting bracket (J) and no pressure gauge (N). Maximum inlet pressure is 1.0 MPa (145 psi); with the automatic drain the regulating range is 0.15-0.9 MPa (20-130 psi). Operating temperature is -5 to 70 C, non-freezing, medium compressed air.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, drain options (differential-pressure, automatic, manual), 40 um standard or 5 um fine elements, the K check-valve option, gauge versions with embedded square or external round indicators, and G (BSPP) or NPT threads as catalogue options. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures and sizing for your circuit before ordering.
Airtac GFR Filter Regulator GFR400C10AJNWK Technical Specifications
| Model | Airtac GFR Filter Regulator GFR400C10AJNWK |
|---|---|
| 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.
Model Code: Airtac GFR Filter Regulator GFR400C10AJNWK
| 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.
Size Class
- GFR200PT1/8" - PT1/4"
- GFR300PT1/4" - PT1/2"
- GFR400PT3/8" - PT1/2"
- GFR600PT3/4" - PT1"
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) |
Where the Airtac GFR Filter Regulator GFR400C10AJNWK Is Used
Safety interlock valve supply
Feeding the pilot circuit of a machine safety interlock stack: the 5 um element keeps fine debris out of small pilot orifices while the check valve holds the interlock's regulated supply if the main air header dips.
Trailer brake-test rig conditioning
A filtered, regulated branch on a workshop rig that exercises commercial-trailer air components, where fine filtration protects test-gauge plumbing and the check valve keeps the regulated section charged between test steps.
Instrument air loop on a skid
Conditioning air to positioners and transmitters on a process skid, with the 5 um grade guarding precision instruments and the check valve isolating the instrument loop from backflow during upstream maintenance.
Is the Airtac GFR Filter Regulator GFR400C10AJNWK the Right Unit?
This code combines the two main GFR400 options: W for the 5 um fine element (protect sensitive downstream components; expect faster element loading than the 40 um standard) and K for the built-in check valve (holds downstream pressure if upstream supply is lost). Size 400 with a 3/8 inch PT port suits larger-bore tubing; the family steps 200 to 600 as flow demands change. Drainage is automatic here - manual (0.05-0.9 MPa regulating floor) and the differential-pressure default are the alternatives. Thread is PT as standard, with G (BSPP) and NPT orderable; J omits the bracket and N omits the gauge. Flow is published as curves, not one rated figure, so have us confirm sizing against your application before ordering.
Quick checklist
- ✓ Body size for your peak flow (See datasheet here)
- ✓ Element 40 µm or 5 µm
- ✓ Drain sets the regulating band
- ✓ Gauge fitted, shape and scale
- ✓ Thread PT, G (BSPP) or NPT
- ✓ Oil needed downstream? Use GFC instead
Installation & Maintenance Notes
- check Mount vertically, bowl down, following the airflow arrow.
- check One body does the filtering and the regulating — no separate regulator needed.
- check Keep inlet pressure at or below 1.0 MPa (145 psi).
- check Adjust only within 0.15 - 0.9 MPa (20 - 130 psi).
- check Drain condensate before the bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
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 GFR Filter Regulator GFR400C10AJNWK FAQ
There is no single rated flow figure to quote: AirTAC publishes G-series flow as curves against inlet pressure and pressure drop. Tell us your required flow and operating pressures and we will confirm the right size from the datasheet before you place the order.
Choose it when two conditions apply together: the downstream equipment needs fine 5 um filtration (the W element, versus the 40 um standard), and the circuit must hold its regulated pressure if the upstream supply fails or drops (the K check valve). If either condition does not apply, the plain AJN or the W-only AJNW versions decode with the same size 400, PT3/8 port and automatic drain.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
Request a Quote for Airtac GFR Filter Regulator GFR400C10AJNWK
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.