Honeywell Gas Solenoid Valve VE Series

The Honeywell VE Series (often categorized under the VE4000 series) consists of Class "A" automatic safety shut-off valves. These are compact, direct-acting valves commonly found in gas burners and heating systems. 1. Model Suffix Breakdown The letter after "VE" (e.g., VE4025A) defines the valve's operation and adjustment features: VE...A: Fast Opening / Fast Closing. Standard On/Off valve with no flow adjustment. VE...B: Fast Opening / Fast Closing with Flow Adjustment. Includes a screw on top to manually limit the maximum gas flow. VE...C: Slow Opening / Fast Closing. Includes an adjustable hydraulic damper for a soft start (opening time variable up to 30s). VE...S: Normally Open (NO). Typically used as relief valves; they close when powered and open when power is lost. 2. Common Models & Sizes The digits following "VE40" usually indicate the DN (Diameter Nominal) pipe size. Model Example Pipe Size (Inches) Max Pressure (Pmax​) VE4010 $3/8$" (DN10) 360 mbar VE4015 $1/2$" (DN15) 360 mbar VE4020 $3/4$" (DN20) 200 mbar (360 mbar optional) VE4025 1" (DN25) 200 mbar (360 mbar optional) VE4040 $1\ 1/2$" (DN40) 200 mbar (360 mbar optional) VE4050 2" (DN50) 200 mbar (360 mbar optional) VE4065 $2\ 1/2$" (DN65) Flanged connection (200/360 mbar) 3. Core Specifications Voltage: 220–240V AC (Standard), 110V AC, or 24V AC/DC. Enclosure Rating: IP54 is standard, but IP65 is available for more demanding environments. Response Time: Fast-acting models close in < 1 second. Ambient Temperature: -15°C to +60°C. Internal Screen: Most models include a fine mesh strainer at the inlet to protect the valve seat from debris. Material: Die-cast Aluminum body with NBR seals (Viton seals optional for aggressive gases). 4. Special Features CPI Switch Support: Many VE valves have a bottom plug that can be replaced with a Closed Position Indicator switch to signal the control panel that the valve is fully seated. Pressure Taps: Usually equipped with two $1/4$" Rp threaded pressure taps on the inlet side for testing and monitoring. Field Replaceable Coil: The electromagnetic coil can be swapped without removing the valve body from the gas line. Safety Check: When replacing a VE series valve, ensure you match the O.S. (Ordering Specification) number found on the nameplate (e.g., VE4025A1210T), as this confirms the exact voltage and pressure rating.