The AirTAC GR30015LF1TK AirTAC Low-Pressure Regulator NPT1/2 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 PT1/2" 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 GR30015LF1TK is an AirTAC GR-series air pressure regulator: it does one job, holding a stable downstream pressure from a compressed-air supply, and it carries no filter, bowl or lubricator. This 300-size unit is built around a 1/2 in NPT port (PT is the standard thread; G and NPT are order options). It is the low-pressure type, so it regulates up to 0.4 MPa, with a maximum working inlet pressure of 1.0 MPa (145 psi). The L-code low-pressure setting suits lines that must run gently rather than at full line pressure. An embedded square pressure gauge on an MPa scale is fitted so the setpoint can be read at a glance, and the K-code reverse (check) valve holds the downstream setting if upstream supply is interrupted. Operating temperature is -20 to 70 C, wider than the rest of the G family, and a mounting bracket is included; GR units are also panel-mountable.
This is a genuine AirTAC part. The GR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, in standard and low-pressure types, with gauge and scale choices, an optional reverse valve, and G, NPT or PT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the flow or datasheet figures for this model against your application before ordering.
| Model | GR30015LF1TK AirTAC Low-Pressure Regulator NPT1/2 |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/2" (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 — square, 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.
| GR300 | G-series pressure regulator, 300 body — sets the port range. |
|---|---|
| 15 | Port size PT1/2". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 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 | GR300 · PT1/2" · 0.05 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR200 |
| One size up | GR400 |
| Line order | Filter first, then regulator, then lubricator |
On a carton-sealing or shrink-wrap line, delicate actuators and hold-down cylinders often need a gentle, stable supply well below main line pressure. This low-pressure regulator lets the technician dial in and read a setpoint up to 0.4 MPa on the square gauge, while the check valve holds the setting if the plant air dips.
Pneumatically actuated process valves and positioners on a plant floor depend on a steady pilot pressure to seat and stroke correctly. A 1/2 in low-pressure regulator placed ahead of the pilot circuit keeps that pressure constant, with the MPa gauge giving operators a visible reference during shift checks.
Assembly benches, pneumatic clamps and air-driven hand tools at a workstation need a set pressure that stays put through the shift. Mounted on its included bracket or panel-mounted at the cell, this 300-size regulator supplies the fixture circuit, and the check valve prevents downstream pressure loss during supply interruptions.
Start with the port step: this unit is 300 size with a 1/2 in port, so check your line size and required air delivery against the family's flow curves - larger sizes (400, 600) carry more flow, smaller sizes (200) less. Because this is the L-coded low-pressure type, it regulates up to 0.4 MPa; if your process needs a higher setpoint, the standard GR type (0.05-0.9 MPa) is the alternative. The fitted square gauge reads in MPa; psi and bar scales are available if your team works in those units. Thread is NPT here, with PT (standard) and G as order options. The K-code check valve is already fitted, and a mounting bracket is included. Since flow is published as curves, not a single rating, 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 regulator flow as curves, not as a single rated number, so we do not quote a l/min, m3/h or SCFM figure. Tell us your line size and air demand and we will confirm the flow from the datasheet curves for this 300-size, 1/2 in port unit on request.
The L in the code marks the low-pressure type of the GR family, which regulates up to 0.4 MPa. It still accepts up to 1.0 MPa (145 psi) at the inlet. If your application needs a setpoint above 0.4 MPa, order the standard GR type instead, which regulates from 0.05 to 0.9 MPa.
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.