The AirTAC GR20008LC3TK AirTAC Air Pressure Regulator, NPT 1/4 in is a genuine G-series air pressure regulator. It holds a stable downstream pressure over the range 0.05 - 0.4 MPa (7 - 58 psi) with PT1/4" ports, and ships with a pressure gauge. A regulator does not filter the air — put a GF filter upstream, or use a GFR filter regulator, when water and particulate must also be removed.
The GR20008LC3TK is a genuine AirTAC GR-series air pressure regulator: it does one job, holding downstream pressure steady at the value you set, and it does nothing else - no filtration and no lubrication. This size 200 unit is configured with a 1/4 in NPT port, the low-pressure type (L) whose setpoint range goes up to 0.4 MPa, a round external gauge reading in bar (code C3), and a built-in reverse/check valve (K) so downstream air does not back-feed through the regulator. Maximum inlet pressure is 1.0 MPa (145 psi), and the GR works from -20 to 70 C, a wider temperature window than the rest of the G family.
GR regulators are made in four sizes (200 / 300 / 400 / 600) with ports from 1/8 in to 1 in, in PT (standard), G (BSPP) or NPT thread, with or without a gauge, with or without a reverse/check valve, and in standard or low-pressure versions. Flow figures are published as curves rather than a single rating, so ask us and we will confirm the datasheet numbers for your application before you order.
| Model | GR20008LC3TK AirTAC Air Pressure Regulator, NPT 1/4 in |
|---|---|
| Series | GR200 pressure regulator |
| Port size | PT1/4" (NPT thread) |
| Regulating range | 0.05 - 0.4 MPa (7 - 58 psi) |
| Pressure type | Low-pressure type |
| Bracket | Fixing bracket included |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -20 to +70 °C |
| Pressure gauge | Fitted — round, bar scale |
| Reflux valve | Fitted (reverse flow permitted) |
| Mounting | Panel mounting; optional fixing bracket |
Specifications follow the official AirTAC G-series air-preparation data. Note the GR temperature range is -20 to +70 °C, wider than the other G-series units. A regulator has no bowl and no filter element, so there is no filtering grade. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GR200 | G-series pressure regulator, 200 body — sets the port range. |
|---|---|
| 08 | Port size PT1/4". This body offers 06 = PT1/8", 08 = PT1/4". |
| L | Low-pressure type — 0.05 - 0.4 MPa (7 - 58 psi). Blank is standard, L is the low-pressure type. |
| (blank) | Fixing bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
Field order is size, port, type, bracket, gauge, gauge shape, scale, thread, reflux — a blank position takes the default. Example: GR300-08LNK is a 300 body, PT1/4", low-pressure type, no gauge, with 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 rather than from a single rated figure.
| This model | GR200 · PT1/4" · 0.05 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size up | GR300 |
| Line order | Filter first, then regulator, then lubricator |
On an assembly cell where air cylinders, clamps or air tools must run at a gentle, fixed pressure well below line pressure, this low-pressure GR holds the reduced setpoint steadily at each bench drop, with the bar gauge giving the operator a direct visual check.
Packaging machines with small actuating cylinders need consistent downstream pressure run after run. Placed at the machine's 1/4 in NPT air inlet, this regulator keeps the actuator circuit stable, and the built-in check valve holds the circuit if upstream supply dips.
On a plant distribution line serving several machines, each drop can get its own GR200 regulator so individual equipment runs at the pressure it needs rather than the header pressure. The included bracket makes mounting at the drop straightforward, and panel mounting is also possible.
Start with the port step: this unit is the 1/4 in NPT size 200, so size up to GR300/400/600 if your line runs larger ports or heavier air demand - sizing against required flow is the one decision that matters most. Because this is the L (low-pressure) type, choose it when your setpoint sits in the lower band, up to 0.4 MPa; for setpoints up to 0.9 MPa use the standard GR version instead. The C3 code means the round external gauge is fitted reading in bar; square embedded gauges and MPa or psi scales are the other catalogue choices. The K code adds a reverse/check valve - useful when you want the downstream circuit held if upstream supply drops. Thread is NPT here; PT (standard) and G are the alternatives to order. A mounting bracket is included, and GR is also panel-mountable. Flow is published as curves, not a single rated figure, so send us your application and we will confirm sizing from the datasheet before you order.
Quick checklist
The reflux valve lets air flow back through the regulator, which is useful when downstream volume must vent quickly. A regulator does not remove water or particulate; that is the filter's job.
AirTAC publishes GR regulator flow as curves, not as a single rated number, so there is no honest one-line flow figure to quote. Tell us your inlet pressure, setpoint and expected air demand, and we will confirm the sizing against the datasheet curve for this exact model before you order.
L is the low-pressure type: its adjustment range tops out at 0.4 MPa instead of the standard version's higher range, so it suits applications needing only a low setpoint. C3 means a round external gauge is fitted, reading in bar. K means a reverse/check valve is built in, preventing downstream air from flowing back through the regulator. The unit also carries a 1/4 in NPT port and includes a mounting bracket.
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.