ELECTRO-FLUIDIC SYSTEMS PRODUCT DATA SHEET ■ Low Actuation Noise ■ 50% Quieter Than Our Already Best in Class HDI Design: <37 dBA ■ Compact Size ■ Light Weight: Less Than 4.5 grams ■ Leakage: Less Than 50 SpLPM at 15 psid (air) ■ Operating Temperature Range: 60°F to 120°F The Lee Company’s LHQ Series Quiet Operation HDI is a miniature 3-port solenoid valve designed to significantly reduce actuation noise. A typical solenoid valve has an inherent clicking sound when energized, which is caused by the metal-to-metal contact of the moving armature and stationary core. This Quiet Operation design uses whisper technology to significantly reduce actuation noise by 50%, providing a sound level measurement of less than 37 dBA when measured at a distance of 12 inches and a valve cycle frequency of 10 Hz. Refer to the table below for relative sound pressure levels. This valve joins the expansive HDI valve product platform and is ideal for medical applications flowing air or compatible gases such as patient simulators, dialysis machines, patient monitors, and other bedside medical devices. Performance parameters can be optimized for specific applications. Contact your Lee Sales Engineer for technical assistance and additional information regarding quiet design options. FLOW PERFORMANCE CHARACTERISTICS (Discharge to Atmosphere) ■ Electrical Connection: 0.025" Sq. Pin ■ Cycle Life: 25 Million Cycles Minimum ■ Wetted Materials: Housing (PBT), Plunger Head (PPA), Seal (FKM), Armature/Stop (430 SS), Spring (316 SS), Damping Fluid * and Epoxy NOTES: (1) Quiet Operation Solenoid Valves are available in 5, 12 and 24 Vdc configurations. Other voltages are available upon request. LHQA___11220H SOUND PRESSURE LEVEL SCALE (dBA) * Synthetic hydrocarbon fluid. See dimensional drawings on reverse. The Lee Company • 2 Pettipaug Road, PO Box 424, Westbrook, Connecticut 06498-0424 Tel: 860-399-6281 • Fax: 860-399-7037 • [email protected] • www.theleeco.

QUIET OPERATION HDI SOLENOID VALVE Plug-In 2X N.O. PORT 3X O-RING, INCLUDED Face Mount MOUNTING HARDWARE SOLD SEPARATELY* .30 7.6 N.C. PORT COMMON PORT PORT SEAL GASKET INCLUDED SCREW SUPPORT .30 7.6 N.C. PORT COMMON PORT Plug-In Boss Detail Face Mount Boss Detail .290 7.37 .284 7.21 ALIGNMENT SLOT 0 0.00 VALVE FLANGE DATUM SURFACE 2X #2-56 (.086-56 UNC-2B) OR M2.0 .162 [4.11] MIN FULL THREAD COMMON PORT SEALING AREA Reference Drawing Number LCFX0300100B for Plug-In Boss Details. Valve Boss may be created using Lee Co. cutting tool Part Number TTTA0000180B. Reference Drawing Number LFIX1001150A...