Needle Valves Function: Provide precise throttling and full shutoff for liquids and gases. The needle and seat assembly enables fine adjustment with repeatable flow control across a range of media and pressures. Compatibility: Designed for standard fittings and interfaces. Available with materials and seals suitable for water, air, oils, and many chemicals; PTFE or FKM seals offer chemical resistance. Check modelspecific data for media limitations and compatibility. Size and connections: Offered in multiple port sizes and thread types to fit common instrumentation and process lines. Options typically include NPT, BSPT, and compression styles; choose according to the system requirement. Materials and seals: Bodies available in stainless steel or brass; seats in PTFE or compatible elastomers. Built for corrosion and wear resistance with temperature ranges dictated by material choice. Performance: Delivers tight shutoff when closed and precise, incremental flow control when open. Features low dead volume and reliable operation over the service life with minimal leakage. Features: Compact, robust construction with smooth operation. Use scenarios: 1) Laboratory gas regulation and sampling lines: control low flow of gases to sensors or analytical instruments with stable, repeatable settings. 2) Hydraulic or pneumatic test benches: finetune supply and bleed lines to calibrate sensors, fixtures, or assemblies. 3) Chemical dosing and process control: inject precise amounts into process streams or sampling lines while maintaining line integrity and preventing backflow. Selection and installation notes: match media compatibility with body material and seat type; confirm port size and connection type for the application. Use appropriate thread sealant or locking mechanisms as specified. Torque according to model guidelines to ensure proper seating. Maintenance: inspect for leaks and wear during routine checks. seals or seats per the manufacturer's recommendations. Keep spare parts for common materials on hand to minimize downtime.