Airtac GFR Filter Regulator GFR400C15AF1K
The AirTAC GFR Filter Regulator GFR400C15AF1K 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 GFR400C15AF1K
The GFR400C15AF1K is a genuine AirTAC G-series filter regulator fitted with a reverse (check) valve, in addition to its filtration and pressure-reducing duties. This configuration combines a 1/2 inch PT port, an automatic drain that clears condensate from the PC (polycarbonate) bowl unattended, a standard 40 um filter element and an embedded square pressure gauge scaled in MPa. The check valve blocks backflow through the unit, helping hold the downstream set pressure when upstream supply dips - for example during compressor unloading. With the automatic drain, the regulating range is 0.15-0.9 MPa (20-130 psi); maximum working pressure is 1.0 MPa (145 psi) and operating temperature is -5 to 70 C.
This is a genuine AirTAC part from a family spanning 200, 300, 400 and 600 sizes with ports from 1/8 to 1 inch, plus drain-type, filter-grade, gauge, thread and mounting options. AirTAC publishes flow capacity as curves rather than a single rating, so send us your line conditions and we will confirm the figures from the datasheet on request.
Airtac GFR Filter Regulator GFR400C15AF1K Technical Specifications
| Model | Airtac GFR Filter Regulator GFR400C15AF1K |
|---|---|
| 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 GFR400C15AF1K
| 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 GFR400C15AF1K Is Used
Pick-and-place gripper circuits
Filtering and regulating supply to gripper cylinders on a robotic pick-and-place cell, with the check valve holding circuit pressure steady while the compressor unloads between cycles.
Palletizer clamp and squaring lines
Feeding the 1/2 inch branch that drives pallet clamps and squaring cylinders, keeping the set pressure isolated from upstream dips so stacked loads are gripped consistently.
Welding fixture clamping
Conditioning air to swing clamps and hold-down cylinders on a welding fixture, where the check valve prevents downstream pressure from backing through the regulator when the main supply is dropped.
Is the Airtac GFR Filter Regulator GFR400C15AF1K the Right Unit?
Choose the K suffix when your circuit must hold its downstream setting against upstream pressure dips or protect the regulator from reverse flow - common on circuits with large accumulators or intermittently loaded compressors. Size 400 with a 1/2 inch PT port is the upper-middle step of the G range; move to 600 for more flow or 300/200 for compact takeoffs. The A suffix gives an automatic drain; manual and differential-pressure drains are alternate codes. The 40 um element suits general cylinder and valve supply - order the W suffix for 5 um fine filtration. Gauge scale, G or NPT threads and the no-bracket J option are catalogue choices.
Flow is published as curves, not a single rated number, so ask us to 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 GFR400C15AF1K FAQ
AirTAC publishes filter regulator capacity as flow curves rather than a single rated figure, so we do not quote a number on the page. Share your line pressure, port size and downstream demand and we will confirm the right size from the datasheet on request.
K specifies a reverse (check) valve fitted inside the unit. It blocks backflow through the regulator, helping hold the downstream set pressure during upstream dips such as compressor unloading, and protecting the regulator from reverse flow. Without the K suffix, the same 400-size, 1/2 inch PT unit with automatic drain and 40 um element is ordered as GFR400C15AF1.
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Standard models are processed and dispatched in 3-5 business days.
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Request a Quote for Airtac GFR Filter Regulator GFR400C15AF1K
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.