Forespar MF 840 Vented Loop - 1-1/2" [903000] Marine Plumbing & Ventilation | Blowers & Heaters ring and thumb screw for

ring and thumb screw for securing the whip into position

where its small size can deliver maximum range

UPC: 725060304034

Poling Platform or any structure made from standard size aluminum pipe

Slow close seat and lid

Forespar MF 840 Vented Loop - 1-1/2" [903000] Marine Plumbing & Ventilation | Blowers & Heaters ring and thumb screw forMF 840 Vented Loop 1 1 2" Installing one of our vented loops will ensure that fluids will not siphon from tank to tank. Vented loops are commonly used in the marine toilet system and engine cooling system. The simple valve system incorporated in the top of the loop allows air to enter the line when not in use, yet effectively seals as water or other fluid passes through. Molded in Marelon, neither vent nor loop will corrode. The duckbill one way valve