The AirTAC GFR300C15MC2K AirTAC Filter Regulator 1/2 in PT 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.
The GFR300C15MC2K is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady, all in one body. This size 300 unit is threaded PT1/2 (1/2 in), purges by hand through its manual drain, carries the standard 40 um filter element in a polycarbonate bowl, and is fitted with an external round gauge reading in psi plus a reverse (check) valve; mounting bracket included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and drain, filter-grade, gauge, thread and check-valve options to suit the line. Maximum inlet pressure is 1.0 MPa (145 psi), working temperature is -5 to 70 C (non-freezing), and the regulator on this manual-drain version adjusts from 0.05 to 0.9 MPa (7-130 psi). Flow is published as curves rather than a single rating, so ask us to confirm the figures against your application.
| Model | GFR300C15MC2K AirTAC Filter Regulator 1/2 in PT |
|---|---|
| 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.
| 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.
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) |
Mounted at the point of use on a factory air drop, it dries and filters the supply and holds a set pressure for pneumatic hand tools and clamps, with the psi gauge giving operators a visible setpoint.
Feeding conveyor stopper and pusher cylinders on a packaging line, it keeps debris and condensed water out of the valves while holding steady pressure for consistent cylinder stroke behaviour.
Installed ahead of tool-clamp and chip-blow-off circuits on a CNC machining centre, it protects downstream components from water and particulate and the check valve holds the circuit if upstream supply drops.
Size the unit by port and demand: this one steps up to PT1/2 (1/2 in) in size 300, and larger sizes carry more flow. Drain type is a real choice - manual (as here, which also allows the widest regulating range of 0.05-0.9 MPa / 7-130 psi), automatic, or differential-pressure. Filtration is 40 um standard; order the W code for 5 um. Gauges are embedded square or external round, in MPa, psi or bar scales - this unit carries a round psi gauge. Thread is PT as standard with G (BSPP) and NPT as order options, and a bracket is included. Because flow is published as curves and not a single rated figure, send us your flow demand and we will confirm sizing against the datasheet before you order.
Quick checklist
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 publishes flow for this series as curves rather than a single rated figure, so we do not quote a number here. Tell us your line demand and we will confirm the flow from the datasheet and check the sizing against your application before you order.
M specifies a manual drain - you open it by hand to purge collected water, and on this version it allows the widest regulating range, 0.05-0.9 MPa (7-130 psi). K fits a reverse (check) valve, so downstream pressure is held if the upstream supply is interrupted. The round gauge on this unit reads in psi.
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.