Knox Valve & Switch

Documentation

Models VC-230A and VC231A

The VC-230A and VC-231A are spring-opposed diaphragm actuators. They are designed to provide dependable on/off or throttling operation of control valves.

Other Features

Molded buna-N diaphragms, nylon reinforced

Steel diaphragm cases

Multiple steel springs

Sturdy cast iron lower frame

Quick disconnect valve stem construction

Valve position indicator

Field reversible

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Accessories

Model P2

Valve Accessories

The P2 side mounted valve positioner is a positive positioning relay for use with pneumatically operated valves and actuators.

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Models 443A and 445A

Valve Accessories

The 443A and 445A current-to-pneumatic transducers convert a mADC signal to a proportional pneumatic signal.

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DT700 “FULTROL” Temperature Controller

Valve Accessories

The DT 700 series pilot temperature controllers provide accurate, dependable temperature control when used with various final control elements such as valves.

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