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shutoff valves

VQ400/800 Series

Class A Combination Valves

Overview
The VQ400M Series class “A” safety combination valves are used for control and regulation of gaseous fluids in gas power burners, atmospheric gas boilers, melting furnaces, incinerators and other gas-consuming appliances.The VQ400M offers flexibility to mount accessories like valve position indicators, pressure indication switches, vent valves or bypass valves at several positions on the gas valve, whenever, wherever.

These combination valves are available in two body sizes:
  • Small model: VQ420, VQ425
  • Large model: VQ440, VQ450All models are connected to suitable sized gas pipes using flange kits which can be ordered separately in several sizes
Specifications

Environmental Conditions

  • Ambient Temperature Range
    • -15 to +60 deg C
  • Enclosure Rating
    • IP54 (PG11 connection); IP65 (DIN plug connection)

Electrical Specifications

  • Working Frequency
    • 1 cycle per minute
  • Power Consumption
    • Varies by model and voltage Watt
  • Operational Voltage Range
    • 85 to 110% of rated voltage

Dimensions & Size Specifications

  • Pipe Size
    • VQ420M: 1/2, 3/4 in, VQ425M: 1 in, VQ440M: 1-1/4, 1-1/2 in, VQ450M: 2 in

Actuation, Valve & Motion Control Specifications

  • Opening Time
    • V1: <1 seconds
    • V2: <1 seconds (fast) or adjustable 1 to 30 seconds (slow)
  • Closing Time
    • <1 seconds for both valves

Installation & Mounting Specifications

  • Mounting Position
    • Vertical (coils on top); ±90 deg from vertical allowed

Overview

  • Models
    • VQ420M, VQ425M (small body)
    • VQ440M, VQ450M (large body)

Fuel, Gas & Media Specifications

  • Gas Type
    • Gaseous fuels (Natural Gas, LP gas, etc.)

Operating Limits, Durability & Lifecycle

  • Designed Lifetime
    • 10 years (per EN 126 and Afecor guidelines)

Connections & Interfaces

  • Connection Type
    • Flanged connection

Standards & Certifications

  • Approvals
    • CE/EU Declaration of Conformity

Applications & Compatibility

  • Applications
    • Gas Power Burners, Atmospheric Boilers, Melting Furnaces, Incinerators, And Other Gas‑Consuming Appliances

Environmental Conditions

  • Ambient Temperature Range
    • -15 to +60 deg C
  • Enclosure Rating
    • IP54 (PG11 connection); IP65 (DIN plug connection)

Electrical Specifications

  • Working Frequency
    • 1 cycle per minute
  • Power Consumption
    • Varies by model and voltage Watt
  • Operational Voltage Range
    • 85 to 110% of rated voltage

Dimensions & Size Specifications

  • Pipe Size
    • VQ420M: 1/2, 3/4 in, VQ425M: 1 in, VQ440M: 1-1/4, 1-1/2 in, VQ450M: 2 in

Actuation, Valve & Motion Control Specifications

  • Opening Time
    • V1: <1 seconds
    • V2: <1 seconds (fast) or adjustable 1 to 30 seconds (slow)
  • Closing Time
    • <1 seconds for both valves

Installation & Mounting Specifications

  • Mounting Position
    • Vertical (coils on top); ±90 deg from vertical allowed

Overview

  • Models
    • VQ420M, VQ425M (small body)
    • VQ440M, VQ450M (large body)

Fuel, Gas & Media Specifications

  • Gas Type
    • Gaseous fuels (Natural Gas, LP gas, etc.)

Operating Limits, Durability & Lifecycle

  • Designed Lifetime
    • 10 years (per EN 126 and Afecor guidelines)

Connections & Interfaces

  • Connection Type
    • Flanged connection

Standards & Certifications

  • Approvals
    • CE/EU Declaration of Conformity

Applications & Compatibility

  • Applications
    • Gas Power Burners, Atmospheric Boilers, Melting Furnaces, Incinerators, And Other Gas‑Consuming Appliances
  • Ambient Temperature Range : -15 to +60 deg C
  • Working Frequency : 1 cycle per minute
  • Power Consumption : Varies by model and voltage Watt
  • Pipe Size : VQ420M: 1/2, 3/4 in, VQ425M: 1 in, VQ440M: 1-1/4, 1-1/2 in, VQ450M: 2 in
  • Operational Voltage Range : 85 to 110% of rated voltage
  • Opening Time : V1: <1 seconds|V2: <1 seconds (fast) or adjustable 1 to 30 seconds (slow)
  • Mounting Position : Vertical (coils on top); ±90 deg from vertical allowed
  • Models : VQ420M, VQ425M (small body)|VQ440M, VQ450M (large body)
  • Gas Type : Gaseous fuels (Natural Gas, LP gas, etc.)
  • Enclosure Rating : IP54 (PG11 connection); IP65 (DIN plug connection)
  • Designed Lifetime : 10 years (per EN 126 and Afecor guidelines)
  • Connection Type : Flanged connection
  • Closing Time : <1 seconds for both valves
  • Approvals : CE/EU Declaration of Conformity
  • Applications : Gas Power Burners, Atmospheric Boilers, Melting Furnaces, Incinerators, And Other Gas‑Consuming Appliances
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