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SD25 Series WALVOIL SD25 MOTOR SPOOL TYPE 2

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Description & Features

Designed for demanding hydraulic systems, the Walvoil SD25 Series Motor Spool Type 2 valve offers exceptional performance with its robust sectional design. This valve supports both open and closed center systems and can be tailored with up to 12 sections. Featuring a main pressure relief valve and load check valve on each section, it ensures reliability and safety under high pressure. The unit accommodates a flow rating of 63 GPM and operates efficiently within a pressure range of up to 4600 PSI for parallel circuits and 3050 PSI for series circuits.

Operating in ambient temperatures from -40°F to 140°F, this valve is adaptable for various industrial environments. Its versatility is further enhanced by interchangeable spools and multiple control options, including manual, pneumatic, and electro-hydraulic controls. The SD25 Series valve is engineered for durability, withstanding fluid temperatures from -4°F to 176°F when using standard Buna-N seals, and offers minimal internal leakage.

SKU: 3CU2725100

Supplier Part Number (MPN): 3CU2725100

Alternate Part Numbers: C1HS91

Specifications

Brand
Walvoil
Key
2
Product Type
Type-2 Motor Spool
Sg Maximum Back Pressure
360 psi on Outlet Port T
Sg Maximum Operating Pressure
4600 psi Parallel Circuit, 3050 psi Series Circuit
Suitable For Use With
SD25 Sectional Valves

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Product Questions & Answers (3)

Question by: Scott B on Feb 7, 2026, 3:04 PM
What's the max pressure this valve section can handle, and does it change depending on how the circuit's set up?
Answer by: Customer Support on Feb 8, 2026, 7:15 PM
Pressure ratings do differ based on circuit configuration. Running a parallel circuit, you're looking at up to 4600 PSI. Drop it into a series circuit and that ceiling comes down to 3050 PSI. Either way, back pressure on the outlet port T tops out at 360 PSI, so that's worth keeping in mind when you're sizing the rest of your system.
Question by: Wade B on Sep 17, 2025, 6:03 AM
Is this here valve good for runnin' a hydraulic motor?
Answer by: Customer Support on Sep 18, 2025, 9:19 PM
This Walvoil SD25 section is indeed the motor spool type, as stated in the product name, so it's specifically configured for hydraulic motor applications.
Question by: Hubert W on Sep 17, 2025, 9:10 PM
got a motor function on my SD25 stack, what’s “motor spool type 2” actually do compared to a regular cylinder spool
Answer by: Customer Support on Sep 19, 2025, 2:40 PM
Motor spool type 2 is a work section spool setup intended for running a hydraulic motor, not a cylinder. In a sectional SD25 valve, the spool choice controls how flow is metered and how the A and B work ports behave in neutral and during shifting, which is why Walvoil offers interchangeable spools for different functions.

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