
Tech Master GPS421 5 Port Single Stage Cylinder Inert Gas Regulator Panel Mounted 0 - 250 Bar
- Single-stage piston cylinder inert gas regulator with five-port configuration
- Maximum inlet pressure 300 bar, delivery pressure range 0-250 bar
- FKM seal with encapsulated seat design and 10 micron 316L stainless steel filter
- Panel mounted with base and side entry points, 1/4″ NPT female connections
- Suitable for technical grade gases up to 4.5 purity (99.995%), weighs 1.5 kg

The Tech Master GPS421 Inert Gas Regulator, is a high-quality single-stage piston cylinder regulator with an FKM seal, designed for controlling non-corrosive or toxic, technical grade gases up to 4.5 purity (99.995%).
This regulator is particularly suitable for applications where slight pressure variation due to decreasing cylinder pressure is acceptable.
Its design facilitates panel mounting, making it ideal for a variety of industrial, laboratory, and research applications.
Key Features
- Five-Port Configuration: Provides extensive connection flexibility for various system requirements.
- Panel Mounting Capabilities: Offers easy integration into control panels and systems.
- Encapsulated Seat Design & Low Wetted Surface Area: Minimizes the risk of gas contamination, essential for maintaining gas purity.
- Full Range of Inlet and Outlet Fittings: Ensures compatibility with diverse gas types and connections.
- Base and Side Entry Points: Provides versatility in installation and connection configurations.
Typical Applications
- Industrial Processes: Suitable for applications requiring precise control of inert gases.
- Panel-Mounted Systems: Ideal for setups where space-saving and integration into control panels are needed.
- Laboratories and Technical Workspaces: Appropriate for environments where precise gas flow control is crucial.
| Inlet | 300 Bar 1/4″ NPT Female |
| Outlet | 0-250 Bar 1/4″ NPT Female |
| Ports | 1/4″ NPT Female |
| Port Configuration | Five port configuration |
| Maximum Inlet Pressure | 300 bar (4350 PSI)* |
| Delivery Pressure Range | 250 bar (3630 PSI) |
| Flow Coefficient (Cv) | 0.088 |
| FKM Seal | Yes |
| Weight | 1.5 kg (3.3 lb)** |
| Gauges | 50mm (2″) Diameter |
| Temperature Range | -20°C to +60°C (-4°F to +140°F) |
| Mounting Type | Panel Mounted – Front and rear panel mounting capabilities |
| Option | L |
| Body | Brass Barstock |
| Bonnet | Brass Barstock |
| Piston | Brass |
| Seal | FKM / EPDM |
| Seat | Nylon |
| Filter | 10 Micron 316L Stainless Steel |
| Seat Design | Encapsulated seat design |
* Subject to cylinder connection. ** 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 | Base Entry, Side Entry |
| Inlet Connection | 1/4” NPT |
| Outlet Connection | 1/4" NPT |
| Inlet Pressure | 300 bar |
| Outlet Pressure | 250 bar |
| Purity Grade | Grade 4.5 |
| Stages | Single Stage |
| Gas Type | Inert |
Tech Master GPS420 Series - Technical 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.
Tech Master GPS421 5 Port Single Stage Cylinder Inert Gas Regulator Panel Mounted 0 - 250 Bar Get in touch
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