ACV Gas valve VR8615VB1010u 537D4046

This gas valve, model VR8615VB1010u (SKU 537D4046), is a high-capacity type for high-capacity boiler systems. It acts as a safety and control valve that shuts off and meters the gas supply to a burner, opening on command from the burner control only after the gas pressure switch confirms safe supply pressure. Its compatible models include ACV CA 400 Compact, CA 600 Classic, Prestige Box Mono 120 MK4, Delta Pro S, and HeatMaster 120.

Parts of this type are selected by brand and series, connection size (typically Rp 1/2" to 2" or flanged), coil voltage (230 V or 24 V AC/DC are common), and required function—single or double solenoid, slow-opening, servo-regulated, or a multiblock with integrated filter and regulator. When replacing one, confirm that the control wiring and signal logic match the existing gas train. The coil is often replaceable separately from the body, so a burnt coil can be swapped without changing the valve body.

Common failure modes for this type include coil burnout, a leaking seat, drifting outlet pressure, or a seized servo regulator. These faults can prevent the valve from opening properly, cause gas to leak when closed, or make the outlet pressure and gas/air ratio unstable. When servicing, verify the coil voltage and the gas train configuration.