Air System Products PN-94102 - Dehydra 52 The Dehydra 52 is a heavy duty, zero loss pneumatic drain valve that saves energy and will not clog. With no electricity needed for operation, the Dehydra 52 is well suited for tight spaces and is safe tooperate in hazardous areas. The Dehydra 52 only activates on demand when condensate is present with zero loss of valuable compressed air. Features: Zero air loss Full flow ball valve Visible liquid level to verify performance Translucent Composite reservoirBrass ball valve Poly float (SST Available) Stainless steel seat Stainless steel integral strainer Viton seal