Series 34
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SECTIONAL DIRECTIONAL CONTROL VALVE • INDIVIDUAL LOAD CHECK built into each section that prevents the load from dropping when • PRECISION GROUND IOSSO PLATED SPOOL that assures long life. • DIAMOND HONED SPOOL BORE provides consistent spool fit with low leakage. • METERING NOTCHES give smooth control of load. • ADJUSTABLE HANDLES position handle in any location from 90° up to 90° down. • O'RING PORTS to eliminate leakage. • SPECIAL MODIFICATIONS are easily made to fit your particular application. • PARALLEL OR SERIES flow paths are possible. • ALL SECTIONS & ASSEMBLIES ARE 100% TESTED includes both internal & external leakage tests & flow tests. • POWER BEYOND CAPABILITY to fit your multi-valve circuits. flow chart). • 12 sections max (consult factory for more). • 10 Micron Filtration Recommended. • Assembly Torque = 85 inch-lbs. (9.6 N m). -High spool section = 6 lbs. (2.7 kg). • Port Sizes -Inlet/outlet #10SAE (7/8 - 14). • Cast Iron Body. • Iosso Plated Steel Spools • Buna N O'Rings (standard). • Stress Proof Steel Handles & Tie Rods • Delrin Load Check Poppet

SERIES 34 – GENERAL INFORMATION: The Brand, Series 34 Sectional Directional Control Valves are assembled to meet our customer’s requirements for up to twelve individual applications per assembly. 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 34 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...

SERIES 34 – GENERAL INFORMATION CONT… OUTLET SECTION – is available end ported (1) which is not convertible to top port, or top ported (2) which is field convertible to end ported. Available machined for power beyond but without power beyond cartridge (A), machined for power beyond and with the power beyond cartridge (B), closed center plug (C) not available with power beyond, and field convertible open to closed center (D) without breaking open the valve stack. ACCESSORY ITEMS – both mid-inlets and mid-outlets are available, both are available as either split flow or combined flow type....

SERIES 34 – CREATING A MODEL CODE FOR SERIES 34: INLET SECTION: 3 4 P G __ __ __ __ PORTING: 1 – End port 2 – Top port RELIEF: Omit – No relief B – Adjustable ball spring relief C – Area-diff. cartridge relief END SPOOL SECTION: 3 4 T G __ __ PORTING: 1 – End port (non-convertible) 2 – Top port (convertible) OPTION: Omit – No options A – Machined for power beyond, no cartridge B – Machined for power beyond, with cartridge C – Closed center plug (Not available with power beyond) D – Convertible from open to closed center, screw type adjustment (Not available with power beyond)

SERIES 34 – CREATING A MODEL CODE FOR SERIES 34 CONT… LOW SPOOL SECTION: 34 B F __ __ __ __ __ __ __ SPOOL TYPE: T – Tandem center O – Open center M – Tandem with metering (4-way only) TYPE: 3 – Three–way (T spool only) 4 – Four-way SPOOL ACTION: S – Spring center D – Three-position detent SD – Spring center (P to A) / detent DS – Detent / spring center (P to B) K – Fourth-position float / spring center (Last spool only) D2 – Two-position detent P to A 2D – Two position detent P to B OPTION: WO – Normally open electric switch (Spring center only) WC – Normally closed electric switch (Spring...

HIGH SPOOL SECTION WITH PORT RELIEF(S): 3 4 B H F __ __ __ __ __ __ __ __ __ __ __ __ __ SPOOL TYPE: T – Tandem center O – Open center M – Tandem with metering (4-way only) TYPE: 3 – Three-way (T spool only) 4 – Four-way SPOOL ACTION: S – Spring center D – Three-position detent SD – Spring center (P to A) / detent DS – Detent / spring center (P to B) K – Fourth-position float / spring center (Last spool only) D2 – Two-position detent P to A 2D – Two position detent P to B ACTUATORS: G – Fixed angle handle Y – Variable angle handle A – Joystick handle (34HAB & 34HAD only) Note: B-style &...

SERIES 34 – COMPLETE LIST OF OPTIONS AND ACCESSORIES CONT… 34B10…………….. High lift ball spring relief cartridge, set at 1000 psi (69.0 bar), for spool section codes beginning 34BH. (Available in pressure setting increments of 100 psi (6.9 bar), please specify desired setting as per this example). 34BFMIC………… Mid-inlet combined flow. 34BFMIS…….…… Mid-inlet split flow. 34BFMOI…….…... Mid- outlet/inlet (flow exits out A port, and is accepted back in at B port). 34BFMOS……….. Mid-outlet split flow. 34BHFMIC………. Mid-inlet, combined flow, with cavities for port reliefs. Port relief cartridge...

SERIES 34 FLOW AND PRESSURE INFO: Pressure Drop vs. Flow for Inlet Ball Spring Relief Pressure Drop vs. Flow for S34 Relief 180 The pressure drop is the difference between the pressure at the work port and the outlet pressure. Pressure drop taken in 1, 6, and 12 spool valves with guage at inlet and last spool section. Pressure Drop vs. Flow for P-A or B Pressure Drop vs. Flow for A or B-T 0.0 Pressure Drop for High Sections Pressure Drop vs. Flow for P-T

DIMENSIONAL DATA: Inches & [millimeters] WORK PORTS #8 SAE STANDARD 3X Ø0.34" [Ø8.7] L

VALVE ASSEMBLY ARRANGEMENT: 34A_____________________________________________ PRICE INLET DISTIBUTOR:_________________________________________________________________ ADDRESS:____________________________________________________________________ CITY:___________________STATE:________ZIP:_________DATE:___________________ Page E-24