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AO755 Series 1-Spool Monoblock Valve, 4-way, Open Center Friction Detent Spool

Description & Features

The AO755 Series 1-Spool Monoblock Valve 4-way Open Center Friction Detent Spool from Brand Hydraulics Inc. is designed to deliver precise metered flow to either work port. The small and compact construction increases efficiency while ensuring positive metering in both directions.

The monoblock valve features a cast iron body a chrome-plated steel spool and Buna-N O-rings providing durability and long life. Its 3/4NPT inlet & outlet and 1/2NPT work ports facilitate smooth flow management with a maximum operating pressure of 3000 PSI and a flow rating of 18 GPM.

Additionally the manually operated valve has a friction detent spool action with a precision ground chrome plated spool ensuring minimal wear over time. The tank port must be directed back to the tank for optimal performance and a 30-micron filtration is recommended.

Supplier Part Number: {{supplierpartnumber}}

Specifications

Circuit Type Open Center	Brand Brand Hydraulics Inc.	Brand Brand Hydraulics	Pack Size 1.00	UOM EA	Features No Relief	Key A	Ports 3/4NPT Inlet & Outlet 1/2NPT Work Ports	Ports 3/4NPT Inlet & Outlet 1/2NPT Work Ports	Spool Action Friction Detent	Supplier Part Number AO755O4LF1	Type 4-way	Product Weight 6.13 lbs	Alternate Part Numbers Alternate Part Number A0755-04LF1, Alternate Part Number C1JC68

Similar Products

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

Product Questions & Answers (1)

Question by: Dustin M on May 16, 2025, 9:38 PM

How does the open center friction detent spool work on this valve?

Answer by: Customer Support on May 17, 2025, 9:59 PM

The open center friction detent spool in the AO755 Series 1-Spool Monoblock Valve allows fluid to flow continuously when the spool is in the neutral position, making it suitable for applications requiring steady flow. The friction detent helps maintain the spool position, preventing accidental movement and ensuring reliable operation.