FQ-Z Series Needle Valve Overview and application Pressure resistance, good sealing, often used in power station, oil refining, chemical plant and instrument measuring pipeline. Technical parameters Nominal size: DN6~DN40 (1/4"~2") Pressure grade: PN6~PN320 (Class150~2000) Operating temperature: -40℃~500℃ Connection: flange type, thread type, welding type Materials Valve body: stainless steel Spool: stainless steel hard treatment Seat: stainless steel hard handling FLYGER sales@flyger.co.uk Tricor Suite, 4th Floor, 50 Mark Lane, London EC3R 7QR, United Kingdom