Baxi Drain Valve Inc Seals 7740218

The Baxi 7740218 is a drain valve supplied complete with seals. It is a Baxi-manufactured component intended for the 818 System range and related appliances, where it provides a controlled point for emptying the water circuit during servicing, repairs or system work. The valve body and its seals form the sealing arrangement at the drain point, so both parts are replaced together.

• Water weeping or dripping from the drain point when the valve is closed
• Scale, corrosion or staining around the valve body
• Seals that have hardened, cracked or perished
• The valve failing to seat properly after a drain down
• Damp marks or water staining on the casing or floor beneath the appliance

• Check the GC number on the appliance data badge against the compatibility list. GC numbers covered by this part include 41-470-99, 41-470-73, 47-077-63, 41-884-09, 41-470-74, 47-077-38, 47-077-64, 47-077-39, 41-884-08, 47-077-65, 47-077-40, 47-077-41, 47-077-71, 47-077-72 and 47-077-73.
• Confirm the exact model and, where applicable, the serial number, as some 818 System Erp variants are identified by serial number ending.
• Check whether the existing seal needs renewing at the same time, since this part is supplied with seals.
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.