Airtac GFR Filter Regulator GFR300C08C1WK
The AirTAC GFR Filter Regulator GFR300C08C1WK 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 GFR300C08C1WK
The GFR300C08C1WK is an AirTAC GFR-series filter regulator: filtration and pressure regulation in one body, with a drain bowl but no lubricator. This 300-size unit takes a 1/4in PT port, the W code specifies the finer 5 um filter element, and the trailing K means a reverse (check) valve is fitted, holding downstream pressure if the upstream supply dips. It is supplied with a round external gauge on the MPa scale and a differential-pressure drain. It runs on compressed air at up to 1.0 MPa (145 psi) inlet, regulates from 0.15 to 0.9 MPa (20-130 psi) with this drain type, and works from -5 to 70 C. The bowl on a 300-size unit is PC (polycarbonate).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8in to 1in, plus options including the standard 40 um element, automatic or manual drain, square or round gauges on MPa, psi or bar scales, G (BSPP) or NPT threads, and no-bracket variants. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet for your application on request.
Airtac GFR Filter Regulator GFR300C08C1WK Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C08C1WK |
|---|---|
| Series | GFR300 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 GFR300C08C1WK
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| C0 | Port size See datasheet. 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. |
| (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 | GFR300 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C0 (two-unit set) |
Where the Airtac GFR Filter Regulator GFR300C08C1WK Is Used
Clamp-and-hold fixtures
Pneumatic clamps on a machining or welding fixture where the check valve keeps workpieces clamped through a momentary drop in shop-air supply.
Injection mould ejection circuits
Regulated air to ejector and core-pull cylinders on an injection moulding tool, with the 5 um element protecting small valve pilots.
Robot end-of-arm supply
Fine-filtered, regulated air routed to gripper and blow-off circuits on a robotic handling cell, sized at a 1/4in point-of-use drop.
Is the Airtac GFR Filter Regulator GFR300C08C1WK the Right Unit?
This code combines two options: the W 5 um element for finer filtration than the 40 um standard, and the K reverse (check) valve for hold-up of downstream pressure. Other decodable choices are drain type (differential-pressure as here, automatic A, or manual M, which widens the regulating range down to 0.05 MPa / 7 psi), gauge style and scale (round MPa as coded, or square, on MPa/psi/bar), thread (PT is standard; G and NPT are catalogue options to order) and bracket. AirTAC publishes flow only as curves, not a single rating, so tell us your pressure and demand and we will confirm sizing from the datasheet before you order.
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 GFR300C08C1WK FAQ
AirTAC publishes G-series flow as performance curves, not as a single rated figure, so we do not state a flow number for this model. Give us your inlet pressure, downstream demand and allowed pressure drop, and we will confirm the sizing from the datasheet on request before you order.
The differential-pressure drain (the default in this code) bleeds condensate using the pressure drop across the filter element, with no operator input. A manual drain (M) empties only when operated, and also widens the regulator's adjustment range down to 0.05 MPa / 7 psi. An automatic drain (A) ejects condensate on its own cycle. Pick A or M where flow is too low for a differential drain to clear the bowl.
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Request a Quote for Airtac GFR Filter Regulator GFR300C08C1WK
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.