Skip to the beginning of the images gallery

1SEB90 Series Counterbalance Cartridge Valves, Up To 4000 PSI & 23 GPM

Description & Features

Application	To control moving loads and prevent load runaway, giving load holding and hose failure safety. This pressure balanced valve is unaffected by back pressure, allowing service line reliefs to operate and for the valve to be used in regenerative or proportional valve systems. See Introduction to Counterbalance (Overcenter) Valves at the beginning of this section.
Cartridge	Model 1SEB90, sold separately
Features	The 1SEB90 is a 3 port, externally piloted, screw-in cartridge-type counterbalance (overcenter) valve with a spring chamber vented to atmosphere. Requires a machined T2A Sun cavity or housing for installation.
Flow Rating	23 GPM
Housing	A20092-T2A or Sun T2A, sold separately
Pilot Ratios	4:1 Best suited for applications where the load remains relatively constant.
Pressure Rating	Max Relief Setting: 5000 PSI. Max Load Induced Pressure: 4000 PSI
Recommended Filtration	18/13
Temperature Range	-22° to +194°F

Products

Model Number	Part Number	Control Ratio	Adjustment Style	Adjustable Range	Preset Pressure	Housing	Seal Material	Price	Action
1SEB90F35S4 1SEB90 Series Cartridge Valve	406AA00056A	4:1	Screw	1088-5076	3046	None	Nitrile

Product Questions & Answers (1)

Question by: Brent J on Mar 7, 2026, 8:07 PM

Wondering what these counterbalance valves are typically used for?

Answer by: Customer Support on Mar 9, 2026, 7:41 PM

These counterbalance valves are often used in applications like aerial platforms and cranes. They're good for controlling loads, especially where you need both static and dynamic control.