
Spec Master HPT601 Hydrogen Regulator 0 - 3.5 Bar BS341 No.3 (Side Entry)
- Two-stage diaphragm cylinder regulator for high-purity hydrogen gases up to 99.9999% purity
- Maximum inlet pressure 300 bar, delivery pressure range 0-3.5 bar
- Side entry BS341 No.3 inlet, 1/4″ NPT Female outlet connections
- Encapsulated seat design and low wetted surface area minimises contamination
- Weighs 2.0 kg; operates -20°C to +60°C

The Spec Master HPT601 Series represents an advanced two-stage diaphragm cylinder regulator, meticulously designed for precise control of non-corrosive or toxic, high purity hydrogen gases up to grade 6.0 purity (99.9999%).
This regulator is engineered to provide constant delivery pressure, which is vital in applications where cylinder pressure decreases over time.
Its robust construction and specialized features make it a preferred choice for applications requiring stable and accurate hydrogen gas control.
Key Features
- Six-Port Configuration: Offers extensive connection flexibility for varied system requirements.
- Front Panel Mounting Capabilities: Enables easy integration into diverse system layouts.
- Encapsulated Seat Design & Low Wetted Surface Area: Minimizes contamination risks, essential for handling high-purity gases.
- Full Range of Inlet and Outlet Fittings: Accommodates a wide variety of gas types and connections.
- Side Entry Point: Facilitates efficient and convenient connection to gas sources.
Typical Applications
- Hydrogen Gas Control: Ideal for scenarios requiring precise regulation of high-purity hydrogen.
- Laboratories: Suitable for research environments where accurate gas control is critical.
- Industrial Processes: Perfect for manufacturing and processing industries that handle high-purity gases.
| Body | Nickel Plated Brass Barstock |
| Bonnet | Nickel Plated Brass Barstock |
| Diaphragm | 316L Stainless Steel |
| Bonnet Seal | PTFE |
| Seal | FKM / EPDM |
| Valve Seat | PCTFE |
| Filter | 10 Micron 316L Stainless Steel |
| Maximum Inlet Pressure | 300 bar (4350 PSI) * |
| Delivery Pressure Range | 3.5 bar (50 PSI) |
| Temperature Range | -20° C to +60° C (-4° F to +140° F) |
| Helium Leak Integrity | 1 x 10-9 mbar l/s |
| Gauges | 50mm (2″) Diameter |
| Ports | 1/4″ NPT Female |
| Weight | 2.0 kg (4.4 lb) ** |
* Subject to cylinder connection – ** Cylinder connection not included
Full specifications can be found in Documents section
| Brand | Gas Arc |
| Entry Point | Side Entry |
| Inlet Connection | BS341 No.3 |
| Outlet Connection | 1/4" NPT |
| Inlet Pressure | 300 bar |
| Outlet Pressure | 3.5 bar |
| Purity Grade | Grade 6.0 |
| Stages | Multi Stage |
| Gas Type | Hydrogen |
Spec-Master-Regulators_HPT60GEN_Issue-1.pdf
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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