PN-COSR is a remotely controllable, pilot-operated control valve that allows remote control of the secondary side pressure setting with an air regulator*.
The secondary side pressure can be set at two points: the motive air supply and the built-in adjustment screw. Steam supply can be maintained even with motive air cut off (in case of emergencies).
* Use a pressure regulator with relief function.

Remote operation

Advantages	Excellent environmental resistance (high temperature, high humidity, water resistance, explosion proof)
Recommended equipment	Facilities where on-site pressure reducing valves are installed in high or distant locations, where frequent washing with water is required, and where the use of electrical equipment should be avoided
Installation example	Without PN-COSR	With PN-COSR

Pressure switching in process use

Advantages	Simplified piping, easy installation, lower equipment cost, excellent environmental resistance (high temperature, high humidity, water resistance, explosion proof)
Recommended equipment	Facilities where pressure switching is performed using multiple pressure reducing valves Facilities where pressure reducing valves are installed at high elevations or in distant locations
Installation example	Without PN-COSR	With PN-COSR

ON-OFF control (temperature control)

Advantages	Improved temperature control accuracy Temperature control of equipment whose temperature fluctuates too much with ON-OFF control
Recommended equipment	Equipment that requires more flexible temperature control than ON-OFF control at low cost
Installation example	Without PN-COSR	With PN-COSR

PID control is possible by combining operation with a controller and an electro-pneumatic transducer. This is primarily for pressure control, however under the right conditions it can also be used for temperature control. Operation is controlled by motive air, and the electro-pneumatic transducer is installed separately so it can be used in high temperature, high humidity, and explosion-proof areas.
* Electro-pneumatic adapters can also be used.

Pressure reducing valve & control valve (temperature control)

Advantages	Pressure limits can be applied Unrestricted flow rate
Recommended equipment	Equipment subject to temperature control by steam temperature feedback
Installation example	Without PN-COSR	With PN-COSR

Pressure reducing valve & control valve (pressure control)

Advantages	Pressure limits can be applied Unrestricted flow rate
Recommended equipment	Equipment subject to temperature control by steam temperature feedback
Installation example	Without PN-COSR	With PN-COSR