06 - SQ - Sequence Valves
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Sequence Valves Catalog Quick Reference Kick Down Type Description Sequence Valve, 2-Way, Normally Closed Flow* 55 l/min [14 US gal/ min] 150 l/min [39 US gal/ min] Flow* 45 l/min [12 US gal/ min] 75 l/min [20 US gal/ min] Description Sequence Valve, 2-Way, Normally Closed, External Pilot, Internal Drain Flow* 35 l/min [9 US gal/min] Description Sequence Valve, Kick-Down Type Description Sequence Valve, 2-Way, Normally Open Flow* 25 l/min [7 US gal/min] SQ - Sequence Valves Quick Reference Description Sequence Valve, Pilot Operated Spool * Flow ratings are based on a pressure drop of 7 bar...

Sequence Valves Catalog Quick Reference Description Sequence Valve, 2-Way, Normally Closed Flow* 25 l/min [7 US gal/min] Description Sequence Valve, 2-Way, Normally Open Flow* 25 l/min [7 US gal/min] Description Sequence Valve, 3-Way Flow* 25 l/min [7 US gal/min] Description Sequence Valve, 3-Way Flow* 20 l/min [5 US gal/min] Description Sequence Valve, 3-Way Flow* 22 l/min [6 US gal/min] * Flow ratings are based on a pressure drop of 7 bar [100 psi] unless otherwise noted. They are for comparison purposes only. 11141713 • Rev AB • May 2014 Quick Reference

Sequence Valves Catalog Quick Reference Description Unloading Valve, Differential Area, Pilot Operated, Atmospheric Vented Flow* 80 l/min [21 US gal/min] Description Unloading Valve, Differential Area, Pilot Operated Flow* 80 l/min [21 US gal/min] 160 l/min [42 US gal/min] SQ - Sequence Valves Quick Reference Description Unloading Valve, Pilot Operated Flow* 4 l/min [1 US gal/min] Description Unloading Valve, Pilot Operated, Spool Flow* 50 l/min [13 US gal/min] * Flow ratings are based on a pressure drop of 7 bar [100 psi] unless otherwise noted. They are for comparison purposes only. SQ - 4

Sequence Valves Catalog Application Notes SEQUENCE VALVES As the name implies, sequence valves control a sequence of operations. Sequence valves usually use a pressure signal to shift a spool, thereby opening or closing a flow path at a pre-set pressure. DIRECT-ACTING SEQUENCE VALVES Direct-acting sequence valves are spooltype valves with a spring force holding the spool closed. When inlet pressure exceeds the spring setting, the spool shifts to direct flow to a second function. Internal-pilot with external drain 1 2 Direct-acting sequence valves come in a variety of configurations:...

Sequence Valves Catalog Application Notes KICK-DOWN SEQUENCE VALVES Another type of pilot-operated sequence valve is commonly known as a kickdown sequence valve. The kick-down sequence valve blocks flow at 1 until sufficient pressure exists at 1 to force the pilot poppet off it’s seat. This creates a pressure differential across the spool that causes the spool to shift and open flow from 1 to 2. The spool will remain open until flow through the valve is shut off. Kick-down sequence valve 1 A common application for a kickdown sequence valve is as a safety device in circuits where overloading...

Sequence Valves Catalog Application Notes Unloading valves Common applications for unloading valves include: • Pump unloading in an accumulator charging system Accumulator charging/unloading valve For higher flow rates the unloading valve may be used to pilot a larger logic element Accumulator charging/unloading pilot valve SQ - Sequence Valves Application Notes Pump unloading in a 2 pump highlow circuit High-low pump unloading TO SYSTEM HIGH FLOW MAIN PUMP HIGH PRESSURE HOLDING PUMP

Sequence Valves Catalog Application Notes APPLICATIONS (continued) Sequence valves Both direct-acting and pilot-operated sequence valves have many common applications including: • SQ - Sequence Valves Application Notes Providing a sequenced series of operations such as in a clamp and lift circuit Clamp & lift circuit Use as a relief valve where the return line has high or varying backpressure. The independent spring chamber drain line provides a relief setting unaffected by downstream pressure. Sequence valve as relief

Sequence Valves Catalog 2-Way, Normally Closed CP240-8 OPERATION Valve blocks flow from 1 to 2 until sufficient pressure is applied at 1 Schematic 1 Pressure drop Rated pressure Rated flow at 7 bar [100 psi] Weight Cavity Cross-sectional view Type A adjustment Type F adjustment Type E adjustment Type K adjustment 80.0 max. [3.15] ORDERING INFORMATION CP240 - 8 - B - 6S - A - C-050 Seals B = Buna-N V = Viton Housing and ports 0 = No Housing SE3B = Al, 3/8 BSP SE4B = Al, 1/2 BSP 6S = Al, #6 SAE 8S = Al, #8 SAE Other housings available Adjustment option A = Internal E = External F = Tamper...

Sequence Valves Catalog 2-Way, Normally Closed CP241-8 OPERATION Valve blocks flow from 1 to 2 until sufficient pressure is applied at 1. Schematic 1 Pressure drop Rated pressure Rated flow at 7 bar [100 psi] Weight Cavity Cross-sectional view ORDERING INFORMATION CP241-8-B-10S-A-C-050 Pressure setting Code x 10psi (0.69 bar) Example: 050 = 500 psi (35 bar) Seals B= Buna-N V= Viton Housing and ports 0 = No Housing 4B = Al, 1/2 BSP 6B = Al, 3/4 BSP 10S = Al, #10 SAE 12S = Al, #12 SAE Other housings available Adjustment option A = Internal E = External F = Tamper resistant K = Knob

Sequence Valves Catalog Pilot Operated Spool CP240-21 OPERATION Valve is a pilot-operated sequence valve that blocks flow from 1 to 2 until sufficient pressure is applied at 1. Schematic Theoretical performance bar 14 Pressure drop Rated pressure Rated flow at 7 bar [100 psi] Weight Cavity Cross-sectional view Type A adjustment Type F adjustment Type E adjustment Type K adjustment 62.2 max. [2.45] ORDERING INFORMATION CP240 - 21 - B - 6S - A - C -150 Seals B = Buna-N V = Viton Housing and ports 0 = No Housing SE3B = Al, 3/8 BSP SE4B = Al, 1/2 BSP 6S = Al, #6 SAE 8S = Al, #8 SAE Other...

Sequence Valves Catalog Pilot Operated Spool CP241-21 OPERATION Valve is a pilot-operated sequence valve that blocks flow from 1 to 2 until sufficient pressure is applied at 1. Schematic Theoretical performance Pressure drop Rated pressure Rated flow at 7 bar [100 psi] Weight Cavity Cross-sectional view ORDERING INFORMATION CP241 - 21 - B - 6S - A - C - 150 Seals B = Buna-N V = Viton Housing and ports 0 = No Housing 4B = Al, 1/2 BSP 6B = Al, 3/4 BSP 10S = Al, #10 SAE 12S = Al, #12 SAE Other housings available Adjustment option A = Internal E = External F = Tamper resistant K = Knob Crack...