Forespar MF 847 Vented Loop - 1-1/8" [903018] Boat Outfitting | Trim Tabs 6V as previously required

6V as previously required

Tinned for corrosion resistance

Grade 316 stainless steel plunger pin and spring

Waveform: Pure Sine Wave

5-year limited warranty

Forespar MF 847 Vented Loop - 1-1/8" [903018] Boat Outfitting | Trim Tabs 6V as previously requiredMF 847 Vented Loop 1 1 8" 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