Forespar MF 845 Marelon Vented Loop, 1/2" Anti-Siphon Valve

Safeguard your vessel's essential fluid systems with the Forespar MF 845 Marelon Vented Loop. Engineered from durable, corrosion-resistant Marelon®, this critical component prevents dangerous siphoning and backflow in marine plumbing. Its innovative duckbill valve system ensures reliable performance by allowing air to enter when not in use, yet sealing effectively even if particulate matter is present in fluids. As a leading marine safety solution, Forespar vented loops are trusted worldwide for their robust construction and vital protection against flooding. Invest in the integrity of your marine systems today.

Key Benefits & Specifications:

• Corrosion-Resistant Marelon® Construction: Molded from glass-reinforced Marelon®, ensuring exceptional durability and longevity in harsh saltwater environments.
• Effective Duckbill One-Way Valve: Designed to prevent siphoning and backflow by allowing air into the line when not in use, and sealing reliably even with particulate matter present, enhancing overall system reliability.
• Standard 1/2" (12.7mm) Barb Size: Provides universal compatibility for common marine hose connections.
• Compact Dimensions: Measures 5-1/4" (133.35mm) in height and 4-1/4" (107.95mm) in width, allowing for versatile installation in tight marine spaces.
• ABYC Compliant Design: Essential for supporting compliance with ABYC standards for critical marine plumbing safety, significantly reducing the risk of flooding.

Recommended Applications:

This versatile vented loop is commonly used in marine toilet discharge systems, engine cooling systems, bilge pump outlets, aqua-lift systems, gen-sets, air conditioners, and ballast tanks to prevent back-siphoning.