AO755 Series 1-Spool Monoblock Valve, 4-way 3-position, Tandem Center Detented Spool

Circuit Type Tandem Center	Brand Brand Hydraulics Inc.	Brand Brand Hydraulics	Pack Size 1.00	UOM EA	Features No Relief	Key F	Ports 3/4NPT Inlet & Outlet 1/2NPT Work Ports	Ports 3/4NPT Inlet & Outlet 1/2NPT Work Ports	Spool Action Detented	Supplier Part Number AO755T4LD	Type 4-way 3-position	Product Weight 5.98 lbs	Alternate Part Numbers Alternate Part Number AO755T4LD, Alternate Part Number C1HE38, Alternate Part Number MI-02933602, Alternate Part Number MINO-00127X20366

Product Questions & Answers

got a cylinder that needs to stay put when i let go of the handle. is this spool the detent kind or does it spring back?

Question by: Neal S on Dec 24, 2025, 8:21 PM

It uses a detented spool, so the lever can stay in the selected position instead of spring-returning to center.

Answer by: Customer Support on Dec 26, 2025, 6:23 AM

Model Number	Key	Type	Spool Action	Circuit Type	Ports	Features
AO755-T4-LS	D	4-way 3-position	Spring Centered	Tandem Center	3/4NPT Inlet & Outlet 1/2NPT Work Ports	No Relief
AO755-04LF1	A	4-way	Friction Detent	Open Center	3/4NPT Inlet & Outlet 1/2NPT Work Ports	No Relief
AO755-T4-LD	F	4-way 3-position	Detented	Tandem Center	3/4NPT Inlet & Outlet 1/2NPT Work Ports	No Relief
AO755-T4-LRS	G	4-way 3-position	Spring Centered	Tandem Center	3/4NPT Inlet & Outlet 1/2NPT Work Ports	Adjustable Relief (Set @ 1500 PSI)
AO755C4LD	C	4-way 3-position	Detented	Closed Center	3/4NPT Inlet & Outlet 1/2NPT Work Ports	No Relief