The AirTAC GFR300C15MJNWTK AirTAC Filter Regulator NPT1/2 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 GFR300C15MJNWTK is an AirTAC filter regulator: water and particulate filtration plus downstream pressure regulation in a single body, with a drain bowl but no lubricator. This size 300 configuration is threaded NPT1/2 (1/2 in), carries the finer 5 um filter element instead of the 40 um standard grade, and has a manual drain bowl in metal, so condensate must be drained by hand during service. The standard regulator adjusts from 0.05 to 0.9 MPa (7-130 psi) with a maximum inlet pressure of 1.0 MPa (145 psi), and the unit operates in -5 to 70 C (non-freezing) compressed air. No pressure gauge is fitted, a reverse/check valve is included, and no mounting bracket is supplied.
This is a genuine AirTAC part from the G-series filter regulator line, which spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of manual, automatic or differential-pressure drains, 40 um or 5 um filtration, gauge options and scale choices, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing or any datasheet figure for your application before ordering.
| Model | GFR300C15MJNWTK AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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) |
Feeds filtered, regulated air to clamping and hold-down cylinders on a press cell, with the 5 um element protecting directional valves from particulate carryover and the check valve holding the set pressure if the upstream supply dips.
Sits at the drop to a conveyor section's diverters, stops and pusher cylinders, giving the line a single point of clean-air regulation and a manual drain point for end-of-shift condensate removal.
Regulates the dedicated air branch serving a machining centre's tool-change cylinder and part fixtures, where the finer 5 um grade helps keep pilot valves clean and the manual drain suits scheduled maintenance windows.
Size and port are the first choice: step up through 200, 300, 400 and 600 as your flow demand and pipe size grow - this unit is size 300 with a 1/2 in NPT port. Drain type matters in service: manual drain (as here) means an operator drains the bowl, while automatic and differential-pressure drains handle condensate continuously; the manual-drain version also allows the widest regulation range from 0.05 MPa. Filter grade is 40 um standard or 5 um (code W) for finer protection - this unit carries the 5 um element. Gauges are optional (round or square, MPa/psi/bar scales) and this configuration ships without one; a reverse/check valve is fitted and no bracket is included. Thread is NPT here, with PT as the standard and G also available to order. Because flow is published as curves and not a single rating, send us your application details 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 the GFR series as curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your application and pipe size and we will confirm the flow figures from the datasheet for this size 300, NPT1/2 unit on request.
The bowl collects water separated from the air, and with the manual drain someone must open it to let condensate out, typically during routine checks. The trade-off is the widest regulation range: the manual-drain version adjusts from 0.05 to 0.9 MPa (7-130 psi). If you want condensate handled without operator attention, ask about the automatic or differential-pressure drain variants of the same size.
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.