Spears 1435 Series PVC Tube Fitting, Adapter, Schedule 40, Gray, 3/4" Barbed x NPT Female Adapter for connecting pipes or fittings of different types Fitting connects to schedule 40 PE pipe on one end and has an NPT female connector on the other PVC for strength and resistance to reactions with acids, gasoline, alcohol, and hydrocarbons Barbed fitting creates a tight seal on flexible pipe when used with a hose clamp (sold separately) Meets ASTM D 2609 standards for plastic insert fittings and certified by NSF for use with potable water