A flush toilet is different from a urinal, which is designed to handle only liquid waste; or from a bidet, which can be used for personal cleansing after toilet use.
Polyvinylidene fluoride (PVDF), commonly referred to as KynarÂ®, is a high molecular weight fluorocarbon that has superior abrasion resistance, dielectric properties and mechanical strength.eneral / chemical grade polyvinylidene fluoride (PVDF) is a high molecular weight fluorocarbon with superior abrasion resistance, dielectric properties and mechanical strength. It is available from 1/2 to 16.
Vitreous detachment is the separation of the eye's internal clear gel (vitreous) from the eye wall or retinal. A posterior vitreous detachment (PVD) is a common problem of aging that may not require any treatment, other than watching for symptoms of the more serious problems such as retinal tear or retinal detachment.