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CLASS "A" SERVO REGULATED COMBINATION VALVES
www.honeyvell.energy
UNIVERSAL GAS VALVES
VR400/VR800 SERIES
APPLICATION
The VR400 Series class "A" servo regulated combination
valves are used for control and regulation of gaseous fuels in
gas fired power burners, atmospheric gas boilers, melting
furnaces, incinerators and other gas consuming appliances.
These servo regulated combination valves are available in
Three different versions:
VR415/VR815 (pipe sizes 1/2")
VR420/VR820 (pipe sizes 3/4")
VR425/VR825 (pipe sizes 1")
VR432/VR832 (pipe sizes 1¼")
VR434/VR834 (pipe sizes 1¼")
General
Description ........................................................................ 2
Features ............................................................................ 3
Technical
Specifications .................................................................... 4
Performance Characteristics ............................................. 5
Capacity curves .......................................................... 6 -10
Dimensional drawings .............................................. 11 - 13
Installation and Operation
Installation ....................................................................... 14
Adjustments and final checkout ...................................... 15
construction and working principles ................................ 17
Various
Standards and approvals ................................................ 19
ordering information ........................................................ 19
Replacement parts and accessories ............................... 23
1
PRODUCT HANDBOOK
Contents
EN2R-9033 0407R6-NE
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Table of Contents
Related Manuals for Honeywell VR432
Summarization of Contents
SPECIFICATIONS
Valve Model and Pipe Size Specifications
Lists valve models and their associated pipe connection sizes.
Capacity and Operating Pressure Specifications
Details minimum/maximum capacity and maximum operating pressures for different models.
Electrical and Material Specifications
Specifies electrical components, materials, and environmental ratings.
Flange Kit Options
Information on available flange kits for different pipe sizes.
PERFORMANCE CHARACTERISTICS
Valve Opening and Closing Performance
Details the operational speed of the valves, including dead time and closing duration.
Leakage, Pressure, and Set Point Stability
Specifies maximum leakage rates, pressure handling, and set point stability.
Operating Parameters and Design Life
Outlines operational limits such as frequency, duty cycle, voltage range, and expected lifespan.
CAPACITY CURVES AND RECOMMENDED WORKING AREA
Capacity Curves for VR415/VR815 (DN15)
Graphical representation of the flow rate versus pressure drop for the DN15 series.
CAPACITY CURVES AND RECOMMENDED WORKING AREA
Capacity Curves for VR420/VR820 (DN20)
Displays the flow rate vs. pressure drop for the VR420/VR820 (DN20) series.
CAPACITY CURVES AND RECOMMENDED WORKING AREA
Capacity Curves for VR425/VR825 (DN25)
Presents the flow rate versus pressure drop characteristics for the VR425/VR825 (DN25) series.
CAPACITY CURVES AND RECOMMENDED WORKING AREA
Capacity Curves for VR432/VR832 (DN32)
Shows the capacity curves for the VR432/VR832 (DN32) series, illustrating flow rate vs. pressure drop.
CAPACITY CURVES AND RECOMMENDED WORKING AREA
Capacity Curves for VR434/VR834 (DN32)
Illustrates the recommended working area and capacity curves for the VR434/VR834 (DN32) series.
DIMENSIONAL DRAWINGS VR415/VR815 AND VR420/VR820
Dimensional Drawings VR415/VR815 (DN15)
Provides detailed dimensions for the VR415/VR815 (DN15) and VR420/VR820 (DN20) series.
DIMENSIONAL DRAWINGS VR425/VR825/VR432/VR832 KTCOMB15/20/25
Dimensional Drawings VR425/VR825 (DN25)
Shows dimensional data for the VR425/VR825 (DN25) and VR432/VR832 (DN32) series.
DIMENSIONAL DRAWINGS VR434/V834 WITH FLANGE KIT KTVR32
Dimensional Drawing VR434/VR834 (KTVR32)
Presents dimensional information for the VR434/VR834 series with KTVR32 flange kit.
DIMENSIONAL DRAWINGS VR434/V834 WITH FLANGE KIT KT434FG
Dimensional Drawing VR434/VR834 (KT434FG)
Provides dimensional details for the VR434/VR834 series with KT434FG flange kit.
INSTALLATION
Mounting Considerations
Details guidelines for valve mounting orientation and placement relative to surroundings.
Main Gas Connection Steps
Step-by-step instructions for connecting the main gas supply to the valve.
Electrical Connections
Instructions for making the correct electrical connections to the valve unit.
ADJUSTMENTS AND FINAL CHECKOUT
2nd Valve Flow Rate Adjustment
Instructions for adjusting the flow rate of the second valve (fast and slow opening types).
2nd Valve Step Pressure Adjustment
Details the procedure for setting the step pressure for the slow opening 2nd valve.
FINAL CHECKOUT AND PRESSURE TAPS
Outlet Pressure Adjustment Procedure
Guide for adjusting the outlet pressure of the gas valve.
Pressure Tap Point Identification
Details the locations and functions of various pressure tap points on the valve.
Installation Final Checkout Steps
Steps for verifying correct operation after installation and adjustments.
CONSTRUCTION AND WORKING PRINCIPLES VR415/420/425/432
Servo Pressure Regulation Mechanism
Explains the servo pressure regulation working principle for specific VR series models.
CONSTRUCTION AND WORKING PRINCIPLES VR434
VR434 Servo Pressure Regulation
Details the servo pressure regulation working principle specific to the VR434 series.
STANDARDS AND APPROVALS
Product Standards Compliance
Information on compliance with European standards like EN 126 and electrical safety standards.
EC Directives and Approvals
Lists EC directives and approvals met by the VR400/VR800 series, including Gas Appliance Directive.
ORDERING INFORMATION
Ordering Specification Number Breakdown
Details the structure of the ordering specification number and its components.
HOW TO SELECT YOUR VALVE
Valve Features and Additional Options
Describes standard valve features and how additional functionalities can be mounted and specified.
REPLACEMENTS
VR400/VR800 Series Exploded View
An exploded view illustrating the components of the VR400/VR800 series for replacement purposes.
Coil Replacement Procedure
Step-by-step instructions for replacing the coils of the VR400/VR800 series.
Hydraulic Slow Open Unit Replacement
Procedure for replacing the hydraulic slow open unit on the VR400/VR800 series.
Rectifier Board Replacement
Guide for replacing the rectifier board component of the VR400/VR800 series.
Pressure Regulator Replacement
Instructions for the safe removal and replacement of the pressure regulator.
REPLACEMENT PARTS AND ACCESSORIES
Replacement Parts Lists
Lists available replacement coils, rectifier boards, slow open units, and regulators with their identification.
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