The AirTAC GFR300C15ANWTK AirTAC Filter Regulator 1/2 in NPT 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 GFR300C15ANWTK is an AirTAC GFR-series filter regulator: water and particulate filtration plus downstream pressure regulation combined in a single 300-size body with a 1/2 in NPT port. This configuration carries the 5 um filter element (code W) for finer air cleaning than the standard 40 um grade, an automatic drain that expels collected condensate without manual attention, and a built-in reverse/check valve that holds downstream pressure if the upstream supply is lost. The standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi), no gauge is fitted on this variant, and a mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR filter-regulator family is published in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and with choices of drain type, filter grade, gauge and scale, thread form (PT standard, G and NPT as order options) and bracket. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C15ANWTK AirTAC Filter Regulator 1/2 in NPT |
|---|---|
| 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) |
Feeding a pneumatic press station from a plant ring main: the 5 um element strips fine particulate and water before the regulator sets a stable working pressure for the press cylinder, and the check valve holds the set pressure if the main is shut off mid-cycle.
A filtered, regulated drop feeding conveyor gate and clamp actuators on a packaging line: the automatic drain keeps condensate out of the valves during multi-shift running, and the 1/2 in port suits the header feeding several drops.
Conditioning supply air to pneumatic transmitters and panel instruments on a process skid: the 5 um grade protects sensitive pilot components, the regulator holds the instrument supply pressure, and the check valve prevents backfeed from the panel side.
Size and port are the first decodable choice: this unit is 300 size with a 1/2 in NPT port, and the family steps through 200/300/400/600 with ports from 1/8 in to 1 in, so pick the step that matches your line's pipe size and air demand. Drain type is a real decision: automatic (as fitted here) suits unattended duty, manual suits periodic checks, and the differential-pressure default drains only when the pressure drop warrants it. Filter grade is 40 um standard or 5 um with the W code - this unit carries the 5 um element for finer protection of downstream components. Gauge, scale (MPa/psi/bar), thread form (PT standard, G or NPT to order) and bracket are all selectable across the family.
Flow for the GFR series is published as curves, not a single rated number, so we cannot quote a rated flow here. Send us your application details and we will confirm the datasheet figures and sizing 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, not as a single rated figure, so we do not quote a rated flow, Cv or SCFM number for this unit. Send us your application - line pressure, downstream demand and acceptable pressure drop - and we will confirm the datasheet flow curves and check the sizing for you before you order.
The N in the code means no gauge is fitted, so the regulator is set with a temporary gauge or against the downstream equipment reading. If you want permanent local indication, the GFR family offers an embedded square gauge or an optional external round gauge with MPa, psi or bar scales - ask us for the equivalent part code with the gauge option included.
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.