Gas Preheater Vulkan GPH 400

Vulkan GPH 400 is a compact 400 W high-pressure gas preheater for stable gas supply in demanding conditions. It reduces the risk of icing and condensate during pressure reduction, supports reliable operation at high withdrawal rates and low ambient temperatures, and is suitable for oxygen, inert gases, nitrogen, nitrous oxide and food-gas applications with the correct connection version. Available in 230 V / 50 Hz and 110 V, with EU plug, UK plug or cable-only configuration. Core product specs and connection variants are documented in the catalog.

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Description

Vulkan GPH 400 is a universal gas preheater for high-pressure gas systems up to 300 bar, designed for efficient heat transfer directly into the gas stream. It is intended for stable gas supply under high withdrawal rates and low ambient temperatures, where pressure reduction can otherwise lead to cooling and process instability. The unit is suitable for a wide range of industrial, laboratory, process, and food-gas applications, with connection versions available for different gas standards. The product is manufactured in accordance with Regulation (EC) No. 1935/2004, Regulation (EC) No. 2023/2006, and LFGB, and is suitable for contact with food gases. Core product data, including 400 W heating power, 300 bar max. pressure, 230 V / 50 Hz supply, brass gas-carrying parts, EPDM/PTFE seals, and IP44 protection, are stated in the Vulkan catalog and reflected on the competitor product pages.

Product description

Universal gas preheating for stable high-pressure performance

The Vulkan GPH 400 is built for reliable preheating of gases in high-pressure applications. Its patented heating principle transfers heat where it matters most — directly into the gas — which improves thermal efficiency and helps maintain stable operating conditions even during demanding withdrawal rates. The competitor product pages describe the GPH 400 specifically for preheating gas in the high-pressure range and highlight its use where low ambient temperatures or high flow demand would otherwise compromise process stability.

One solution for broad application coverage

This version is positioned as a universal gas preheater for all common technical, laboratory, process, and food-gas duties where controlled gas temperature matters. Based on the Vulkan catalog, the GPH 400 is offered in connection variants for oxygen, inert gases, nitrogen, and nitrous oxide, in both 200 bar and 300 bar configurations, which makes it suitable for a wide range of system layouts and installation standards.

Practical for international installations

The unit can be supplied with an EU plug, with a UK plug, or without a plug as cable-only version. A 110 V version is also available. This gives the GPH 400 practical flexibility for OEM integration, export projects, plant retrofits, and country-specific electrical requirements.

Built for industrial everyday use

The GPH 400 combines compact dimensions with solid technical performance. The catalog specifies a plastic housing, brass gas-carrying parts, EPDM/PTFE seals, IP44 protection, and a maximum pressure of 300 bar. The competitor product pages additionally mention an inlet filter, which strengthens the positioning of the unit as a practical industrial component rather than just a heating accessory.

Strong positioning for food-gas systems

For food processing, modified atmosphere packaging, and other gas-related food applications, the GPH 400 should be positioned not merely as a heater, but as a process reliability component. It is manufactured as a product that complies with VO (EG) 1935/2004, VO (EG) 2023/2006, and LFGB, and is suitable for contact with food gases. That gives the page a stronger commercial argument for customers working with food-grade gas systems.

Key benefits

  • 400 W heating power for more effective gas preheating in demanding operating conditions
  • Suitable for high-pressure systems up to 300 bar
  • Universal application range across industrial, laboratory, process, and food-gas systems
  • Patented heat transfer principle that delivers heat directly into the gas stream
  • Compact and easy to integrate into existing gas supply systems
  • Available with EU plug, UK plug, or cable-only version
  • 110 V version available
  • Manufactured for food-gas compatibility in line with Regulation (EC) No. 1935/2004, Regulation (EC) No. 2023/2006, and LFGB
  • CE-marked and designed for dependable industrial service

Technical data

Technical data below are taken from the Vulkan catalog page for Gasvorwärmer Vulkan GPH 400.

Parameter Value
Product Vulkan GPH 400
Product type Gas preheater
Housing Plastic
Gas-carrying parts Brass
Seals EPDM / PTFE
Max. pressure 300 bar
Voltage 230 V / 50 Hz
Heating power 400 W
Leak rate 1 × 10⁻⁶ mbar l/s
Protection class IP44
Operating temperature -20 to +60 °C
Length (L) 150 mm
Height (H) 90 mm
Weight 2.0 kg
Marking CE

Versions and article numbers

Connection variants and article numbers below are taken from the same catalog page for the Vulkan GPH 400.

Gas type Pressure Inlet Outlet Article no.
Oxygen 200 bar G 3/4 RH ÜM G 3/4 RHaf 451 208
Oxygen 200 bar G 3/4 RHaf G 3/4 RH ÜM 451 218
Inert gas 200 bar W 21.8 x 1/14 RH ÜM W 21.8 x 1/14 RHaf 451 206
Inert gas 200 bar W 21.8 x 1/14 RHaf W 21.8 x 1/14 RH ÜM 451 216
Nitrogen 200 bar W 24.32 x 1/14 RH ÜM W 24.32 x 1/14 RHaf 451 203
Nitrous oxide 200 bar G 3/8 RH ÜM G 3/8 RHa 451 202
Oxygen 300 bar W 30 x 2 RH ÜM W 30 x 2 RHa 451 308
Oxygen 300 bar M 24 x 1.5 RH ÜM M 24 x 1.5 RHak 451 070
Oxygen 300 bar M 24 x 1.5 RHak M 24 x 1.5 RH ÜM 451 079
Inert gas 300 bar W 30 x 2 RH ÜM W 30 x 2 RHa 451 306
Inert gas 300 bar M 24 x 1.5 RH ÜM M 24 x 1.5 RHak 451 072
Inert gas 300 bar M 24 x 1.5 RHak M 24 x 1.5 RH ÜM 451 071
Inert gas 300 bar G 1/4 RHi G 1/4 RHi 451 073
Inert gas 300 bar 1/4 RH NPT F 1/4 RH NPT M 451 074
Inert gas 300 bar G 1/2 RHk ÜM G 1/2 RHak 451 080
Nitrogen 300 bar W 30 x 2 RH W 30 x 2 RHa 451 303