For low or high-pressure applications, Robertshaw’s pressure control solutions are the top choice for OEMs around the world for both residential and commercial applications.
O Series Single Low Pressure Controls
Application: Commercial Refrigeration
The Ranco® O Series Single Low Pressure Controls offer a variety of pressure ranges and switch action to provide maximum application flexibility.
Features and Benefits:
- High-amp rated switch (SPST) design (O10-1402/O10-1483)
 - Super Cap® capillary protection system
 - Non-conductive front cover with captive screw
 - Adjustable differential and range
 - Easy-to-read scale plate
 - Vibration cone (absorbs and reduces vibration away from brazed joint)
 - Low mass copper alloy capillary tube (reduces capillary stress caused by equipment vibration)
 - Compatible with refrigerants 134A, 401A, 401B, 402A, 402B, 403A, 403B and 404A
 - Cap included on all Australian controls. Cap is optional on controls for all other regions
 
Agency Certifications:
- UL
 - CE models O12 and O16
 - IP44 rated for all Australian controls
 - IP44 rated for all EMEA and South American controls with optional cap
 
O Series Single High Pressure Controls
Application: Commercial Refrigeration
The Ranco® O Series Single High Pressure Controls offer a variety of pressure ranges and switch action to provide maximum application flexibility.
Features and Benefits:
- NEMA 1 enclosure with non-conductive cover
 - Front-located captive cover screw
 - Large, easy-to-read scale plate
 - Super Cap® capillary protection system
 - Universal mounting and compact design
 - Screw terminals are raised and fully accessible for easy wiring
 - Laser-welded bellows for extended life
 - Heavy-duty plated steel frame
 - Compatible with refrigerants 134A, 401A, 401B, 402A, 402B, 403A, 403B and 404A
 - Cap included on all Australian controls. Cap is optional on controls for all other regions
 
Agency Certifications:
- UL
 - CE models O12 and O16
 - IP44 rated for all Australian controls
 - IP44 rated for EMEA and South American controls with optional cover
 
O Series Dual Pressure Controls
Application: Refrigeration
The Ranco® O Series Dual Pressure Controls combine the functions of a single high-pressure limit control and a single low-pressure control in one unit.
Features and Benefits:
- Convertible feature allows selection of manual or reset function when operating at high pressure
 - Replaces wide range of high-pressure manual or automatic reset controls
 - High-pressure limit is combined with suction pressure sensing to provide temperature control and/or pump down
 - High-limit adjustment screw
 - Low-pressure differential and range adjusting screws
 - Selector screw for manual or automatic
 - Reset button on manual controls
 - Low-pressure and high-pressure scale plate
 - High-impact plastic cover with center mount screw
 - Super Cap® capillary protection system
 - Color-coded for easy identification of pressure line 
- High-side capillary flare nut silver
 - Low-side capillary flare nut brass
 
 - Compatible with most refrigerants including 134A, 401A, 401B, 402A, 402B, 403A, 403B and 404A
 - Cap included on all Australian controls. Cap is optional on controls for all other regions
 
Agency Certifications:
- UL
 - CE models O12 and O16
 - IP44 rated for all Australian controls
 - IP44 rated for EMEA and South American controls with optional cover
 
THE ROBERTSHAW DIFFERENCE
With unmatched flow-control expertise, rapid development capabilities, strategically located manufacturing and an engaged team driven by collaboration and innovation, we’ll help you achieve extraordinary outcomes.