SERIES 20 -- GENERAL INFORMATION
The Brand, Series 20 Sectional Directional Control Valves are assembled to meet our customer’s requirements for up to six individual applications per assembly (consult factory for more sections). Brand Hydraulics does not charge anything extra for this process and assembly is priced solely on the overall sum of the prices of its components.
When assembled in their normal manner the series 20 spool sections are in parallel. When the spools are in neutral position the flow passes by each spool and then onto the tank (outlet) port. If two or more spools are shifted simultaneously their work ports are in parallel. The oil flow will take the path of least resistance allowing lighter loads to move first. All spools are machined with metering chamfers, and have a high “handle vs. spool” movement ratio, resulting in good metering capability. Input flow can be divided among several circuits (spool sections) by feathering the spools.
INLETS – can be provided with no relief, or an adjustable ball spring relief. Standard inlets are end ported (1) which is not field convertible. The other optional inlets are machined with end, top (2) and side (3) port, these two options are field convertible to all three ports.
OUTLETS – are available end ported (1) which is not convertible to top or side porting. The other optional outlets are top (2) and side (3) port, these two options are field convertible to all three ports. Options (2) and (3) are machined for power beyond and closed center cartridge. Specify (A) to receive the outlet assembled with power beyond cartridge. Specify (B) to receive the outlet assembled with closed center cartridge.
WORK SECTIONS:
SPOOL TYPE – Open center four-way (O) connects ports A and B to tank in neutral. Tandem center four-way (T) blocks port A and B in neutral. Tandem center three-way (T3) powers a cylinder in one direction. Please note that closed center four-way operation can be obtained by using a tandem center four-way spool and a closed center plug in the assembly’s outlet section.
SPOOL ACTION – Standard spring center (S) returns the handle to neutral when the handle is released. Standard three-position detent (D) holds the spool in neutral and both active positions. Spring center detent (SD or DS) springs back to neutral from one position and is mechanically detented in the other direction. Fourth-position float (K) is similar to spring center except it has a fourth position that makes all ports common to each other (last spool section only). Two-position detent (D2) P to A only. Two-position detent (2D) P to B only.
ACTUATORS – Joystick handle (A) is used to actuate two adjacent spool sections with one handle (use on any spool section). B-style handle (B) is assembled to the valve vertically. C-style handle (C) is assembled to the valve horizontally.
OPTIONS – Normally open electric switch (WO) used with spring center option only. Normally closed electric switch (WC) used with spring center option only.
ACCESSORY ITEMS – All standard tie rod kits contain rods, lock washers and hex nuts. Please be sure to note correct tie rod torque spec of 85 inch pounds.
Seal kits, power beyond kit, closed center kit and many other accessory items are available, please see the “SERIES 20 COMPLETE LIST OF OPTIONS AND ACCESSORIES” section of this catalog, for model codes and descriptions of these items.
ASSEMBLY – model codes and list prices for complete assemblies will be issued by the factory, upon request of an authorized Brand Distributor. All model codes so issued become proprietary to the requesting distributor. Model codes so issued will not be descriptive in nature, but shall be of sequential numerical type. Individual sections and accessories can be purchased so that custom valve stacks may be assembled or modified outside the factory.
 
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