
The AirTAC B52-GR Copper-Free Air Source Treatment Unit B52-GR20008LC1K 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.
GR20008LC1K is a genuine AirTAC G-series low-pressure air regulator for compressed air, in the compact 200 size with a 1/4 in PT thread as standard. The L code marks the low-pressure type: settings run up to 0.4 MPa. The C1 code fits the optional external round pressure gauge scaled in MPa, the blank bracket position means a mounting bracket is included, and the K code adds a reverse (check) valve that holds downstream pressure against backflow if the upstream supply drops. Maximum working (inlet) pressure is 1.0 MPa (145 psi); operating temperature is -20 to 70 C (non-freezing).
GR regulates pressure only - no filter, no bowl, no lubrication - so put a GF filter or GFR filter regulator ahead of it where the air needs cleaning. The same low-pressure regulator is available in 200, 300, 400 and 600 sizes, with G (BSPP) and NPT thread options, with or without the check valve (K), and with square or round gauges in MPa, psi or bar scales. Flow is published as curves rather than a single rated figure; we confirm datasheet and flow figures on request.
| Model | Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR20008LC1K |
|---|---|
| Series | GR200 pressure regulator |
| Port size | PT1/4" (PT 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, MPa 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. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | PT 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 |
Set gentle holding pressure for vacuum-assist pad clamps on a router table; the check valve keeps pads engaged if shop air dips mid-cut.
Supply flotation air that moves glass sheets without contact in a glazing plant, holding the set pressure against supply fluctuation.
Regulate the low-pressure atomizing air to a benchtop spray-coating rig, with the MPa gauge letting the operator lock in the recipe setting.
Choose the L (low-pressure) type for set points at or below 0.4 MPa; for higher settings up to 0.9 MPa, the standard type is the right code. The K check valve is the deciding option here - keep it when the downstream circuit must hold pressure through a supply interruption, and drop to GR20008LC1 when it must vent freely. The C1 round gauge reads in MPa; square gauges and psi or bar scales are other codes. The 200 size carries a 1/4 in PT port; step to 300, 400 or 600 for larger ports, add T for NPT or G for BSPP, and note a bracket is included. Flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
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 performance as flow curves rather than a single rated figure, so no single number applies across all inlet pressures and settings. Tell us your supply pressure, set pressure and demand, and we will confirm the sizing from the datasheet on request.
Yes - the K code specifies a reverse (check) valve fitted in the regulator, so the downstream circuit keeps its low-pressure set point when the upstream supply drops or is shut off. Order the GR20008LC1 code instead if you want downstream pressure to release freely.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business 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.