Lab Master LGT501 Multi Stage 2 Gauge Fuel Gas Cylinder Regulator (0-10 Bar)
- Two-stage diaphragm cylinder regulator for high-purity gases up to grade 5.0 (99.999%)
- Maximum inlet pressure 300 bar, delivery pressure range 10 bar (140 PSI)
- BS341 No.4 inlet, 1/4″ stainless steel compression outlet
- Body: nickel plated brass, diaphragm: 316L stainless steel, 1.7 kg weight
- Operating temperature range -20°C to +60°C

The Gas Arc Lab Master LGT501 Cylinder Gas Regulator, designed to handle non-corrosive or toxic high purity gases up to grade 5.0 purity (99.999%), is a precision-engineered two-stage diaphragm cylinder regulator.
It’s tailored for applications requiring constant delivery pressure even as the cylinder pressure decreases, making it an ideal tool for a range of laboratory and industrial applications where precise gas control is essential.
Key Features
- Six-Port Configuration: Provides versatile connection options for different system requirements.
- Encapsulated Seat Design & Low Wetted Surface Area: Minimizes contamination risks, essential for high-purity gas applications.
- BS341 No.4 Inlet & 1/4″ Stainless Steel Compression Outlet: Ensures secure and reliable connections.
- Side Entry Point: Facilitates easy and efficient connection to gas sources.
Typical Applications
- Laboratories: Ideal for environments that require precise control of high-purity gases.
- Industrial Processes: Suitable for manufacturing and processing industries dealing with high purity gases.
- Specialized Gas Handling: Perfect for scenarios managing high-purity, non-corrosive, or non-toxic gases.
| Maximum Inlet Pressure | 300 bar (4350 PSI) |
| Delivery Pressure Range | 10 bar (140 PSI) |
| Flow Coefficient (Cv) | 0.079 |
| Gauges | 50mm (2″) Diameter |
| Ports | 1/4″ NPT Female |
| Inlet Connection | BS341 No.4 |
| Outlet Connection | 1/4″ Stainless Steel Compression |
| Weight | 1.7 kg (3.8 lb) |
| Temperature Range | -20° C to +60° C (-4° F to +140° F) |
| Body | Nickel Plated Brass Barstock |
| Bonnet | High Strength Alloy |
| Diaphragm | 316L Stainless Steel |
| Bonnet Seal | PTFE |
| Pressure Relief Valve Seal | FKM / EPDM |
| Valve Seat | Polyamide (Nylon®) |
| Filter | 10 Micron 316L Stainless Steel |
* Cylinder connection not included.
Please note: If you require a test certificate with your regulator, it must be ordered at the same time. Our certification product can be found here: Gas Arc Regulator Test Certificate
Data Sheet can be found in Documents Section
| Brand | Gas Arc |
| Entry Point | Side Entry |
| Inlet Connection | BS341 No.4 |
| Outlet Connection | 1/4" stainless steel compression |
| Inlet Pressure | 300 bar |
| Outlet Pressure | 10 bar |
| Purity Grade | Grade 5.0 |
| Stages | Multi Stage |
Download Datasheet
Download PDFA carriage charge is applied to orders, for standard 1-2 day shipments to mainland destinations within the United Kingdom. Other destinations and premium services are available but subject to additional freight charges.
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