
The AirTAC AirTAC GFR300-10 Filter Regulator (GFR30010JC1WK) is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/8" 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 GFR300-10JC1WK is a combined filter regulator with a built-in reverse (check) valve: it removes water and fine particulate from compressed air, holds downstream pressure steady, and keeps that pressure in place if the upstream supply drops. This 300-size unit has a PT3/8 port, the finer 5 um filter element (W suffix), a differential-pressure drain and an external round pressure gauge reading in MPa. Max inlet pressure is 1.0 MPa (145 psi); setting range with differential drain is 0.15-0.9 MPa (20-130 psi).
This is a genuine AirTAC part from the G-series, which spans 200, 300, 400 and 600 sizes with element grades of 40 um or 5 um, a choice of drain types, gauge styles and G or NPT threads. The 300-size bowl is polycarbonate. Because flow is published as curves rather than a single rating, we confirm exact flow and datasheet figures on request before you order.
| Model | AirTAC GFR300-10 Filter Regulator (GFR30010JC1WK) |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (PT thread) |
| Filtering grade | 5 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 — round, MPa scale |
| Reflux valve | Fitted (reverse flow permitted) |
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.
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| 10 | Port size PT3/8". This body offers 08 = PT1/4", 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 | GFR300 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
On a packaging conveyor's pneumatic braking or clamping circuit, it cleans and regulates the supply while the check valve holds actuator pressure if the plant air dips, preventing load drift.
Supplying air-nozzle cooling or air-bearing stations on a production line, it removes fine particles and keeps the set pressure steady, with the check valve preventing backflow into the supply.
Feeding gripper and end-of-arm tooling circuits on a pick-and-place robot, it filters and regulates the supply and holds gripper pressure through upstream pressure drops between cycles.
Pick this code over the plain JC1W when the downstream circuit must stay pressurised through supply interruptions - the K suffix adds the check valve. The 5 um element fits finer-duty circuits; drop to the standard 40 um grade (drop the W) for general plant air with heavier contamination loads. The 300 size at PT3/8 matches 3/8-port lines needing mid-range G-series flow; the differential-pressure drain suits continuously supplied systems, while a manual-drain code widens the setting range to 0.05-0.9 MPa. PT thread is standard here, with G and NPT as separate catalogue codes. Flow appears only as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
There is no single rated flow figure to quote - AirTAC publishes G-series flow as performance curves against pressure and port size. Share your line pressure and demand and we will confirm the right size from the datasheet on request before you order.
K means a reverse (check) valve is fitted, so downstream pressure is retained if upstream supply is lost - useful for clamping, holding and gripper circuits. Without the K, the same unit is the GFR300-10JC1W; both share the 5 um element, differential drain and MPa gauge.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business 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.