Sun Hydraulics SQDBLCV/AP 液压阀-产品快照

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Sun Hydraulics SQDBLCV/AP 液压阀

SQDBLCV/AP - Kick-down, pilot operated, balanced piston sequence valve

Sun Hydraulics

Kick-down sequence valves will kick completely open and remain open once the pressure at the inlet (port 1) exceeds the valve setting, creating an unrestricted flow path from port 1 to port 2 (sequence). The pressure setting at port 1 is relative to the drain (port 3). The valve remains open as long as the pressure at port 1 exceeds the pressure at port 2. To reset the valve, pressure at port 1 must fall below the setting of the valve, flow from port 1 to port 2 must cease, and pressure at port 2 must be equal to or greater than the pressure at port 1. All 3 port sequence cartridges are physically and functionally interchangeable (i.e. same flow path, same cavity for a given frame size). Should not be used in load holding applications. The main stage orifice is protected by a 150 micron stainless steel screen. Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 5000 psi (350 bar). Intended for use on the actuator side of the system as flow through the valve must cease for the valve to reset. If used on the pump side of a system, pump flow must be shut off for the valve to reset. Corrosion resistant cartridge valves are intended for use in corrosive environments and are identified by the model code suffix /AP for external stainless steel components, or /LH for external zinc-nickel plated components. See the CONFIGURATION section for all options. For further details, please see the Materials of Construction page located under TECH RESOURCES. Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations. Cavity T-11A Series 1 Capacity 15 gpm60 L/min. Factory Pressure Settings Established at Kick down pointKick down point Maximum Operating Pressure 5000 psi350 bar Response Time - Typical 25 ms25 ms Maximum Valve Leakage at 110 SUS (24 cSt) 2 in³/min.30 cc/min. Adjustment - Number of Clockwise Turns to Increase Setting 55 Valve Hex Size 7/8 in.22,2 mm Valve Installation Torque 30 - 35 lbf ft41 - 47 Nm Adjustment Screw Internal Hex Size 5/32 in.4 mm Locknut Hex Size 9/16 in.15 mm Locknut Torque 80 - 90 lbf in.9 - 10 Nm Model Weight .40 lb0,20 kg Seal kit - Cartridge Viton: 990-011-006 Show FAQ How big is a drop of hydraulic oil? There are exactly 250 Sun drops in a cubic inch or 15 in a cc. What does Sun mean by the term sequencing? A sequence valve opens when the pressure at port 1 exceeds the setting of the valve. When pressures at port 1 and port 2 both exceed the setting of the valve the valve goes full open, or sequences. When this happens flow can go in either direction, just so long as port 1 stays above the setting. What are the tolerances on pressure settings for Sun's pressure control valves? Pressure setting tolerances are listed in our Performance Data page. A link to this page can also be found in the Additional Resources tab of the applicable product page. Additional Resources Sun Offers Zinc-Nickel Plating for Corrosion Resistance Sun Cartridges with EPDM Seals Sun Expands Corrosion-Resistant Solutions QuickDesign with SmartConnect Offers Drag-and-Drop Schematic Tool Series 4 PLUS Cartridges Offer Higher Flows with Lower Pressure Losses Sequence Valves Technical Tips Manufacturing Sun Cartridge Cavities Sequence Valves Sun Model Code Explanation; 999-901-334 Cavity Information (S-171) and Tooling Cartridges: Materials of Construction Fluid and Temperature Recommendations Performance Data Sun's Floating Style Screw-In Cartridge Units of Measure, Settings, and Conversions Notes: For Series 1 cartridges configured with an O control (panel mount handknob), a .75 in. (19 mm) diameter hole is required in the panel.

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