21662702 Vacuum Valve | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Anti-Siphon Vacuum Valve, 19mm / 3⁄4 inch - Part Number: 21662702

A marine anti-siphon valve installed at the high point of the seawater circuit to prevent cooling water from siphoning into the exhaust and engine after shutdown.

⚙️ Key Features

• Connection diameter: 19mm / 3⁄4 inch

• Automatic vacuum-break function

• Marine corrosion-resistant construction

• Serviceable valve element

• Designed for above-waterline mounting

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• Current OEM reference: 21662702

OEM / Related Numbers:

• 21662702

Aftermarket / Verified Equivalents:

• Johnson Pump / Albin Pump Marine 19mm anti-siphon-valve family - verify connection size

🚤 Compatibility

• Volvo Penta seawater-cooled marine engines installed at or below the vessel waterline

• Install in the seawater hose between the heat exchanger and exhaust discharge, above the vessel waterline

• Hose connection: 19mm / 3⁄4 inch

• D1-13B cooling systems using hose clamps 961667 and 961666 and hose 952970

🔌 Function

The valve admits air when the engine stops, breaking the siphon that could otherwise flood the exhaust manifold and cylinders with seawater.

Common signs of failure or damage:

• Seawater leaking from the valve

• Valve blocked by salt or debris

• Water siphoning into the exhaust after shutdown

• Valve element sticking

• Cracked housing or hose connection

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging