The AirTAC GFR30008MC2WK AirTAC Filter Regulator 1/4in PT 5um 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 PT1/4" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR30008MC2WK is an AirTAC GFR300 filter regulator: a single body that removes water and particulate from compressed air and holds downstream pressure steady. This configuration is built on a 1/4 in PT port, carries the finer 5 um filter element (code W, versus the standard 40 um), drains by hand through its manual drain, and is fitted with an external round pressure gauge reading in psi plus a reverse (check) valve. The polycarbonate bowl lets you see the condensate level at a glance.
This is a genuine AirTAC part. The GFR series spans four sizes (200, 300, 400 and 600) with ports from 1/8 to 1 in, and options for automatic, manual or differential-pressure drains, 40 um or 5 um filtration, square or round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR30008MC2WK AirTAC Filter Regulator 1/4in PT 5um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (PT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, psi 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 0.05 - 0.9 MPa (7 - 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. |
|---|---|
| 08 | Port size PT1/4". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 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 · PT1/4" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeding tool-clamp and chip-blow-off circuits on a machining centre: the 5 um element protects tight-tolerance valves from particulate while the regulator holds a steady setting at the spindle.
Supplying cylinder-driven carton sealers and case erectors, where the check valve keeps actuators from drifting if plant air pressure dips mid-cycle and the manual drain suits an attended shift.
Bench-testing pneumatic assemblies in a lab or quality cell: the round psi gauge gives a clear readout while the manual drain fits supervised, intermittent use.
Size and port come first: GFR300 takes a 1/4 in port, and the 200/300/400/600 step exists so you can match the body to the flow your line needs - we confirm the curve against your demand before you order. Then set the options this code already fixes: manual drain (simplest, but someone must bleed the bowl; automatic suits unmanned cells), the 5 um element for finer protection than the standard 40 um, a round psi gauge, and a check valve that holds downstream pressure if the supply dips. Thread is PT as standard, with G (BSPP) and NPT available to order, and a mounting bracket is included.
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.
AirTAC publishes GFR flow as performance curves, not a single rated figure, so we do not quote a number here. Send us your line demand and we will confirm the flow from the datasheet for this 1/4 in unit before you order.
The manual drain means an operator opens the bowl drain to discharge collected water, which suits attended machines and low-condensate duty. If the unit sits in an unattended cell, the automatic or differential-pressure drain versions of the same GFR300 body remove that routine.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 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.