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Siemens Biogases and Recycling Gas Valves VRF10 VRH10

Siemens Biogases and Recycling Gas Valves VRF10 VRH10

Siemens
Designed for gas flow control in industrial processing and gas train installations, Siemens VRF10 and VRH10 valves accommodate dry biogas and mildly aggressive recycled gases. These normally closed valves feature flanged connections in nominal sizes DN40 to DN125 and support operating pressures up to 600 mbar, depending on the selected model. They are operated using compatible Siemens SKP actuators. Before installation, gas composition and compatibility with the valve materials must be evaluated to ensure appropriate application.

Product Description

Siemens VRF10 / VRH10 Valves for Biogas and Recycled Gas Systems

Siemens VRF10 and VRH10 Series valves are engineered for handling biogas, recovered gases, and compatible industrial process gases. Developed for integration into industrial gas trains, these valves can perform safety shutoff duties when paired with approved actuators in configurations that meet EN 161 requirements.

The valve range accommodates gases belonging to Gas Families I–III, air, and selected dry biogases or recycled gases with mildly aggressive properties. These products support gas distribution networks, industrial combustion installations, and gas recovery operations requiring dependable isolation and flow control.

Key Features

  • Class A safety valve performance under EN 161 when assembled with suitable approved actuators.
  • Two-port configuration with a normally closed operating position.
  • Industrial flanged pipe connections.
  • Controlled slow opening and fast shutoff with compatible actuator assemblies.
  • Suitable for specified dry biogas, digester gas, industrial waste gas, and recovered gas applications.
  • VRF10 nominal connection sizes range from DN40 to DN80.
  • VRH10 nominal connection sizes range from DN80 to DN125.
  • VRF10 models incorporate a stainless steel strainer to protect the internal valve mechanism against particles.

Industrial Applications

Siemens VRF10 and VRH10 valves serve specialized gas handling and industrial processing requirements, including:

  • Biogas transportation and distribution installations
  • Gas handling systems for anaerobic digesters
  • Industrial waste gas collection and recovery
  • Recycled process gas distribution networks
  • Industrial burner gas trains with verified gas compatibility
  • Process gas isolation and supply control

Compatible Siemens Actuators

Actuator selection for VRF10 and VRH10 valves depends on the intended switching or regulation function and the chemical characteristics of the gas being handled.

  • SKP1 Series: Operates the valve for gas flow shutoff.
  • SKP2, SKP5 and SKP7 Series: Combine gas regulation with shutoff operation. Compatibility with the specific recycled gas composition must be confirmed with Siemens.

Gas Compatibility and Safety Requirements

Biogas and recycled process gases can contain different concentrations of chemically active substances depending on their origin. Constituents such as hydrogen sulfide (H2S), ammonia (NH3), and water vapor may affect valve materials, operating reliability, and service life.

  • Permitted gas temperature range: 0 to +60°C.
  • Hydrogen sulfide (H2S) content must not exceed 1% by volume under dry gas conditions.
  • Ammonia (NH3) content must not exceed 1% by volume under dry gas conditions.
  • Internal condensation within the valve is prohibited.
  • Using two valves connected in series together with a suitable valve proving device is strongly advised.
  • Periodic visual examination at intervals of 6–12 months is recommended.
Important Safety Notice: VRF10 and VRH10 valves equipped with SAX31 or SKL actuators are not permitted to serve as EN 161 safety shutoff valves. Correct product selection requires verification of gas composition, operating parameters, valve materials, and actuator compatibility.

Product Consultation

Boonyium & Co., Ltd. offers technical consultation for industrial boilers, combustion equipment, and gas control components. Contact our specialists for assistance with Siemens VRF10 / VRH10 product information and choosing the appropriate valve configuration for your installation.

Specifications

Siemens VRF10 / VRH10 Biogas Valves – Technical Data

Brand / Manufacturer Siemens
Valve Series VRF10 / VRH10
Equipment Category Valves for Biogas and Recycled Gas Applications
Operating Configuration Two-port, Normally Closed
Safety Classification Class A under EN 161 when paired with approved suitable actuators
EN 161 Valve Group Group 2 (EN 161)
VRF10 Connection Range DN40–DN80
VRH10 Connection Range DN80–DN125
VRF10 Maximum Operating Pressure Up to 600 mbar
VRH10 Permitted Operating Pressure 250–300 mbar, model-dependent
Allowable Gas Temperature 0 to +60°C
Ambient Working Temperature -10 to +60°C
Permissible Storage Temperature -20 to +60°C
Permissible Transport Temperature -15 to +60°C
Humidity Limit Below 95% RH; condensation is prohibited
Flange Pressure Rating PN16 in accordance with ISO 7005-2
Permitted Gas Categories Gas Families I–III, air, dry biogas and dry recycled gases, subject to verified material compatibility
Hydrogen Sulfide (H2S) Limit 1% by volume under dry gas conditions
Ammonia (NH3) Limit 1% by volume under dry gas conditions
Built-in Particle Strainer VRF10: Stainless steel, 0.9 mm mesh opening
Supported Actuator Families Siemens SKP Series; SKL and SAX31 subject to application restrictions

VRF10 and VRH10 Model Specifications Comparison

Valve Model Connection Size Maximum Pressure (mbar) Air Flow Rate (m³/h)
VRF10.404 DN40 600 125
VRF10.504 DN50 600 190
VRF10.654 DN65 600 280
VRF10.804 DN80 600 350
VRH10.805 DN80 300 400
VRH10.905 DN100 300 790
VRH10.915 DN125 250 1200

Technical Note: The listed air flow rates are measured at a pressure differential of Δp = 10 mbar and must not be interpreted as maximum flow capacities for every operating condition. Source document: Siemens Data Sheet CC1N7633en.