customized one way valves one way valves valves 1. 100% factory tested 2. best price 3. shipping fast 4. free samples custom-built one way valves one way valves valves product detail:body material: ABSdiaphragm material: VMQCracking pressure: < 0.5kpaBack Pressure: > > 300Kpa Major Applicationindustrial inkjetwide inkjet printerstestergasoline engine easy installation,maintenanceexcellent flow ...