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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

Actuator Type
Manual
Adjustment
With Adjustment
b Dimensions
3.76 in
Body Material
Iron
Check Valve
Without Check Valve
Connection Type
FNPT
Design Code
50
Dimensions
6.63 in L x 2.58 in W x 5.64 in H
Diode
Without Diode
Electrical Flag
No
Gauge Port
7/16-20 Straight Threaded O-Ring
grp Adjustment Style
Adjustment Knob with Locking Nut
Hi Vent Spring
Without Hi-Vent Spring
Installation Type
NPTF Thread
Leakage
Standard
Manual Override
No
Media
Hydraulic Oil
Model
CT-06-C-50
Nominal Size
3/4 in
Number of Stages
1
Performance
Standard
Remote Control
Without Remote Control
Seal Material
Buna-N
Series
CT-06 Series
Switch Connector
No
Vent Port
9/16-18 Straight Thread O-ring

Product Questions & Answers (1)

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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.

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