Airtac GFR Filter Regulator GFR300C08JNK
The AirTAC GFR Filter Regulator GFR300C08JNK 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 GFR300C08JNK
This GFR-series unit is a filter regulator: a 40 um filter element and an air pressure regulator combined in one body with a single polycarbonate drain bowl. This PT1/4 (1/4 in) configuration is the standard pressure type with a 0.15-0.9 MPa (20-130 psi) adjustment range and a differential-pressure drain, the catalogue default, which discharges collected condensate in response to the pressure drop across the element. The J suffix means no mounting bracket is supplied, N means no gauge, and K means a reverse (check) valve is fitted to hold downstream pressure if the upstream supply drops. Maximum inlet pressure is 1.0 MPa (145 psi); operating temperature is -5 to 70 C.
This is a genuine AirTAC part from the G series, which spans 200, 300, 400 and 600 sizes with ports from 1/8 to 1 in, plus drain, filtration, gauge, bracket and thread options. G-series flow is published as curves rather than a single rated figure, so ask us for the datasheet and we will confirm the relevant figures for your application on request.
Airtac GFR Filter Regulator GFR300C08JNK Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C08JNK |
|---|---|
| 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 GFR300C08JNK
| 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 GFR300C08JNK Is Used
Robot gripper air feed
Filtering and regulating the 1/4 in supply to gripper actuators on a pick-and-place cell, with the check valve holding grip pressure if the main air supply dips.
Packaging machine actuator line
Conditioning air to the cylinders on a carton-sealing or wrapping line, removing water and particulate down to 40 um while holding a set working pressure.
Workshop bench drop point-of-use
A compact filter-regulator at a 1/4 in bench air drop feeding small cylinders and air tools, with condensate cleared by the differential-pressure drain.
Is the Airtac GFR Filter Regulator GFR300C08JNK the Right Unit?
Size 300 with a 1/4 in PT port suits circuits built around 1/4 in tubing and fittings; match the size to the published flow curve for your demand rather than to a single number. Keep the differential-pressure drain for continuously running lines, or order the automatic (A) or manual (M) version instead - manual drain also widens the regulator range to 0.05-0.9 MPa (7-130 psi). Standard filtration is 40 um; the W code gives a 5 um element. This J/N/K version has no bracket, no gauge and a check valve fitted; add a gauge code if you want pressure indication, and note that PT is the standard thread with G (BSPP) and NPT available to order. Since flow is published as curves, not a single rating, 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 GFR300C08JNK FAQ
AirTAC publishes G-series flow as performance curves, not as a single rated figure, so we do not quote one number here. Ask us for the datasheet and we will confirm the flow curve and correct sizing for your pressure and line conditions on request.
J specifies no mounting bracket, N specifies no gauge, and K specifies a reverse (check) valve fitted in the regulator section to hold downstream pressure if the upstream supply is lost. Omit a letter to get the bracket or gauge as standard, or drop K for no check valve.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac GFR Filter Regulator GFR300C08JNK
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.