The AirTAC GR60020LC3TK AirTAC Regulator NPT3/4 Low-Pressure, Bar Gauge 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 PT3/4" 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 GR60020LC3TK is an AirTAC GR-series air pressure regulator in the large 600 size, built purely for pressure regulation: it contains no filter, no bowl and no lubricator. This configuration is the low-pressure (L) type, so it holds downstream pressure anywhere up to 0.4 MPa, with a maximum inlet pressure of 1.0 MPa (145 psi). It comes with a 3/4 in NPT port, an external round gauge scaled in bar, a built-in reverse (check) valve that holds the downstream setting if upstream pressure is lost, and a mounting bracket; the GR body is also panel-mountable. Operating temperature range is -20 to 70 C, wider than the rest of the G family.
This is a genuine AirTAC part. The GR series spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, standard or low-pressure regulation, gauge or no-gauge versions, MPa/psi/bar scales, and PT, G or NPT threads. We do not quote a single rated flow figure because AirTAC publishes flow as curves; ask us and we will confirm the datasheet figures for your application before you order.
| Model | GR60020LC3TK AirTAC Regulator NPT3/4 Low-Pressure, Bar Gauge |
|---|---|
| Series | GR600 pressure regulator |
| Port size | PT3/4" (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.
| GR600 | G-series pressure regulator, 600 body — sets the port range. |
|---|---|
| 20 | Port size PT3/4". This body offers 20 = PT3/4", 25 = PT1". |
| 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 | GR600 · PT3/4" · 0.05 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR400 |
| Line order | Filter first, then regulator, then lubricator |
On a bag-sealing or tray-lidding line, the sealing jaws and rollers need a gentle, steady air pressure well below full line pressure. This low-pressure GR600 regulator, fitted with a check valve, takes the 3/4 in shop-air feed down to the set point and holds it if the supply dips.
Pneumatic clamps on jigs, fixtures and hold-downs often need a deliberately low, repeatable pressure so delicate workpieces are not crushed. Mounted on its bracket next to the clamp manifold, this regulator lets an operator dial in and read the clamp pressure in bar on the round gauge.
Air-piloted diaphragm valves and dampers on process skids need a clean, stable pilot pressure held constant regardless of supply swings. The 3/4 in NPT GR600 low-pressure regulator with reverse valve keeps the pilot circuit at its set pressure and prevents backfeed from disturbing the setting.
Start with the port step: this unit is the 600 size with a 3/4 in NPT port, the right choice when your line is plumbed at 3/4 in and you want the largest GR flow path. The L code makes this the low-pressure type, correct where the process needs a controlled pressure up to 0.4 MPa rather than the full standard range. The round gauge here is scaled in bar; MPa and psi scales are also available if your team reads those units. The K code adds a reverse (check) valve, useful on circuits where a lost supply must not dump the set pressure. Threads: PT is the AirTAC standard, while G (BSPP) and NPT are catalogue options to order - this code is the NPT version. A mounting bracket is included, and GR can also be panel-mounted.
On sizing, be honest with yourself about flow: AirTAC publishes GR flow as curves, not a single rated number, so the right move is to send us your required flow and pressure and let us confirm the curve data against the application 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 does not publish a single rated flow figure for the GR series - flow is given as curves against inlet pressure and set pressure, so any one number would be misleading. We will pull the GR600 datasheet and confirm the curve data for your inlet pressure and set point on request, before you order. What we can state from the catalogue: this is the 600 size with a 3/4 in NPT port, the largest GR flow path, with low pressure loss.
The L in the code makes this the low-pressure regulator type: it regulates downstream pressure up to 0.4 MPa, instead of the standard GR range that reaches 0.9 MPa. The K code means a reverse (check) valve is fitted, so if upstream supply is lost the unit holds the downstream set pressure instead of letting it bleed back. Maximum inlet pressure is still 1.0 MPa (145 psi), and the round gauge fitted here is scaled in bar.
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.