The AirTAC GFR300C10NTK AirTAC Filter Regulator NPT3/8 with Check Valve 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 GFR300C10NTK is an AirTAC GFR300 filter regulator: water and particulate filtration plus downstream pressure regulation in a single body. This size 300 unit has a 3/8 in NPT port, a 40 um standard filter element, and a differential-pressure drain that bleeds collected condensate automatically whenever the pressure drop across the element is high enough. The standard regulator covers a setting range of 0.15-0.9 MPa (20-130 psi), max inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing). A reverse/check valve is fitted to hold downstream pressure if the upstream supply is lost, a mounting bracket is included, and no gauge is supplied with this variant. The polycarbonate bowl suits the 300 size.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, and options include manual or automatic drains, a 5 um element (code W), gauge choices and scale, G or NPT threads, and a reverse/check valve. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR300C10NTK AirTAC Filter Regulator NPT3/8 with Check Valve |
|---|---|
| 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) |
Filter and regulate the air feeding a stamping or assembly press cylinder, with the check valve holding the set pressure at the press if the plant air main dips.
Condition the air feeding stopper and pusher cylinders on a packaging conveyor, keeping water and debris out of the valves while holding a stable setting.
Supply clean, regulated air to quarter-turn actuated valves on a process skid, with the 40 um element protecting positioner and solenoid internals.
Size 300 with a 3/8 in NPT port is the right step when your line flow sits between the smaller 200/1/4 in and larger 400/1/2 in units - match the port step to your piping and required flow, and we will confirm sizing against the published curves before you order. Drain is differential-pressure here; choose manual (widest 0.05-0.9 MPa setting range) or automatic if your duty or regulation range calls for it. The 40 um element is standard; specify the W variant for 5 um where finer particulate removal matters. This variant ships without a gauge, but gauge style and scale are catalogue options on regulator-equipped units. Thread is NPT on this code; PT is the standard thread and G (BSPP) is an order option - all are specifications, not delivery promises. A bracket is included.
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 l/min or SCFM number. Send us your application flow and pressure and we will confirm the datasheet figures and check the sizing for you before you order.
The N in the code means no gauge is fitted, so add a suitable downstream gauge at installation or ask us about gauge options on regulator-equipped units. The K code means a reverse/check valve is fitted, which holds the downstream setting if the upstream supply is interrupted. Regulation range on this differential-pressure drain variant is 0.15-0.9 MPa (20-130 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.