Pneumatic And Hydraulic Equipment Page 1129

Fully Adjustable Needle Valves SUN's needle valves are adjustable orifice components that regulate flow.When placed ahead of a control device or actuator, needle valves act as a meter-in device; when placed on the downstream side of a control device, they act to meter-out flow from the actuator. Needle valves are also available with an integral check valve to provide unrestricted flow from port 2 to port 1. Adjustable Needle Valve (No check) - NF*C SUN's adjustable needle valves offer excellent metering characteristics for accurate and precise flow control. Performance parameters include: A balanced adjusting mechanism for low operating effort at high pressure Sharp-edged orifice design to minimize flow variation with viscosity changes. Optional needle orifice ranges. Positive shut-off of flow when closed. Five turns of adjustment. Adjustable Needle Valve with Check - NC*B Performance parameters optimized in SUN's adjustable needle cartridge with built-in check are similar to the NF*C but include: A high capacity free flow check. Applications Check Valves SUN's check valves are on/off circuit components that allow free flow from port 1 (inlet) to port 2 (outlet) and block flow in the opposite direction. NOTE: Standard port designations for two port check valves include both port 1 and port 2 for free flow inlet. For two port flow controls, port 1 modulates inlet flow to port 2 outlet flow with or without a reverse free flow check. The preferred check valve blocks flow from port 2 to port 1. Simple Check Valves - CX*A SUN's check valves operate over a wide flow range (20 to 160 GPM) and provide free flow from port 1 (inlet) to port 2 (outlet) and block flow when flow direction is reversed (port 2 to port 1). Performance parameters optimized in SUN's simple check valves include: Low pressure drop relative to physical size. Low leakage when closed (less than 1 drop/min.) Six different spring opening ranges. HYDRAULICS NEEDLE, FLOW CONTROL AND CHECK VALVES S U N H Y D R A U L I C S Sun Hydraulics cartridge valves JHF Catalog [ Volume 7 ] (314) 427-0600 800-444-0522 (FAX) 314-427-3502 www. j 1129 Prices Subject to Change Without Notice John Henry Foster pneumatic and hydraulic equipment

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