Vacuum Select Valve

An Overview Of Vacuum Select Valves

A vacuum-select valve is a 3 port diverter valve used in vacuum (suction) or positive pressure conveying to divert air from one source to several pneumatic destinations.

Role In Rospen-Style Systems

In lean phase vacuum conveying systems such as those offered by Rospen, the conveying air is generated by a venturi, exhauster or roots pump and pulls product through the line. A vacuum select valve sits in the “clean” air line to choose which receiving vessel, is being supplied at any given time.

Key Design Features

• Multi‑way body (3‑way) to divert air flow between lines in vacuum service.
• Hygienic design such that any dust build up externally can be easily cleaned.
• High‑integrity seals and tight internal clearances maintain conveying vacuum and efficiency.
• Pneumatic or electric actuation with limit switches for positive position feedback into the plant control system.

Typical Applications

• Feeding multiple vacuum receivers from a central vacuum pump point or
• Eliminates the requirement for using multiple butterfly valves and the associated control.

Benefits For Plant Operators

• Improved line flexibility by enabling automatic route selection within a single vacuum conveying network.
• Higher productivity because conveying can continue while routes change, reducing downtime and manual intervention.
• Easier integration with PLC/SCADA for recipe‑driven routing, batch control and traceability across complex powder handling processes.
• ATEX Zone 22 Rated.