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CT & CS Series 3-Port Pilot-Operated Relief Valve, 1500-3000 PSI Adjustment Range, 3/4 NPT Inlet & Outlet Ports

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Description & Features

The CT & CS Series 3-Port Pilot-Operated Relief Valve is built for applications demanding adjustable pressure relief or regulation in hydraulic circuits. This valve offers a 1500-3000 PSI adjustment range and features 3/4 NPT inlet and outlet ports. Constructed from durable cast iron it ensures reliable continuous duty performance.

Features include an adjustment knob with a locking nut inline mounting gauge port and ventable design. The valve achieves smooth and quiet functionality while maintaining a standard maximum flow rate of 60 gpm for 3/4 & -12 size models and 120 gpm for 1-1/4 & -20 size models. For high flow models the maximum flow rates are 90 gpm and 180 gpm respectively.

The product integrates high-performance attributes including moisture resistance and maintains fluid cleanliness at 19/17/14 micron. Notable components are a 7/16-20 St.Thd. O-Ring gauge port and a vent port of 9/16-18 St.Thd. O-Ring. The maximum operating pressure of this valve is 3000 PSI.

Model Number: CT-06-F-50

Supplier Part Number: 590540

Specifications

A
5.64
Adjustable Range
1500-3000
Adjustment
1
Application
Applications requiring an adjustable pressure relief or regulating valve to limit the pressure in a hydraulic circuit to a desired maximum
B
3.76
Body Material
Cast Iron
Check Valve
No
Design Code
50
Diode
No
Brand
DANFOSS POWER SOLUTIONS II LLC (VICKERS)
Brand
Danfoss Power Solutions
Pack Size
1.00
UOM
EA
Electrical Flag
No
Features
Plug-and-play design|High-performance features|Moisture resistant
Fluid Cleanliness
19/17/14 micron
Gauge Port
7/16-20 St.Thd. O-Ring
Hi Vent Spring
No
Inlet Port
3/4 NPT
Interface
3/4 In.
Leakage
Standard
Manual Override
No
Outlet Port
3/4 NPT
Performance
Standard
Remote Control
No
Seal Material
Buna-N
Special Features
None
Supplier Part Number
590540
Switch Connector
No
Valve Mount Type
NPTF threads
Vent Port
9/16-18 St.Thd. O-Ring
Alternate Part Numbers
Alternate Part Number C1BW13, Alternate Part Number CT-06-F-50, Alternate Part Number CT06F50, Alternate Part Number DSCT06F50, Alternate Part Number F3CT06F50
Product Weight
3.00 lbs

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Product Questions & Answers (1)

Question by: Wade H on Dec 11, 2025, 12:22 PM
runs continuous duty okay on this thing, or does it need breaks between cycles?
Answer by: Customer Support on Dec 13, 2025, 7:46 AM
Continuous duty is built right into what this valve does. Cast iron body, pilot-operated spool design, and it's rated for steady operation without needing downtime between cycles. Whether you're running a circuit that's pressurized most of the shift or one that cycles constantly, this valve is spec'd to handle it without complaint.