Valcor Scientific’sisolated solenoid valves (Series SV 51 and SV 73) use flexiblediaphragms, or bellows, to isolate operating parts from the fluid beinghandled. Metal-to-fluid contact is eliminated, along with thecontamination, corrosion, and clogging that can occur in valves with wetted parts.With all-Teflonconstruction and Polypropylene bodies, the valves come in two-way, normally closed and normally open, andthree-way configurations. Seal materials include Viton, EPDM, andTeflon. Standard voltages are 24 VDC and 115 VAC/60 Hz, while pressuresrange from vacuum to 100 PSI and flowrates up to Cv 3.5.