Airtac GFR Filter Regulator GFR300C10MJNK
The AirTAC Airtac GFR Filter Regulator GFR300C10MJNK 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 GFR300C10MJNK
The GFR300C10MJNK is a 300-size AirTAC filter regulator with filtration and pressure regulation in one body and a 3/8in PT port as standard (G/BSPP and NPT are orderable thread options). The M code selects a manual drain on the polycarbonate bowl and the element grade is the 40 um standard. The N code means no pressure gauge is fitted, J means the mounting bracket is not supplied, and K fits a reverse (check) valve so downstream air cannot back-feed through the unit when supply pressure drops. Supply pressure is rated to 1.0 MPa (145 psi) and, with this manual-drain version, the outlet adjusts from 0.05 to 0.9 MPa (7-130 psi). Operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part in the GFR300 series. The G platform runs from 200 to 600 size with ports from 1/8in to 1in, drain choices (differential-pressure, automatic, manual), 40 um or 5 um filtration, gauge and bracket options, and a low-pressure type on request. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
Airtac GFR Filter Regulator GFR300C10MJNK Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C10MJNK |
|---|---|
| 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 GFR300C10MJNK
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| C1 | 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-C1 (two-unit set) |
Where the Airtac GFR Filter Regulator GFR300C10MJNK Is Used
Dock leveller air-bag control
Regulates the supply to a dock leveller air bag, with the check valve holding the set pressure against the load if the shop-air supply dips or is shut off.
Case packer cylinder circuit
Conditions air for the push and clamp cylinders on a case packer, filtering 40 um-grade shop air and setting the pressure the packer cylinders need.
Fixture clamps with backflow protection
Supplies workholding clamps on a production cell, keeping clamp pressure steady through cycle interruptions so parts stay secured while the setup is running.
Is the Airtac GFR Filter Regulator GFR300C10MJNK the Right Unit?
Choose the size (200 to 600) to match your port and flow path; 300 with a 3/8in PT port covers mid-range circuits. Flow is published as curves, not a single rating, so give us your demand figures and we will confirm sizing against the datasheet before you order. The K code is the reason to pick this unit over the plain MJN: the built-in check valve holds the downstream circuit against backflow when upstream pressure is lost. Manual drain suits attended installations; automatic or differential-pressure drains suit unattended duty. The 40 um element is the standard grade; the W variant gives 5 um. Add a gauge variant if a setpoint readout is needed, and remember PT is the standard thread - order G (BSPP) or NPT explicitly - with a bracket if required.
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 GFR300C10MJNK FAQ
AirTAC publishes G-series flow as curves rather than a single rated figure, so we do not state one number here. Share your consumption and duty profile and we will confirm the datasheet figures for this 3/8in unit on request.
K fits a reverse (check) valve in the unit: downstream air cannot flow back through the regulator when upstream pressure falls. Choose the plain MJN variant if backflow is not a concern in your circuit.
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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 GFR300C10MJNK
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.