KOSO 501T/520T top-guided single-seat control valve, 1/2–8 in, ANSI 150–1500

KOSO 501T is a compact top-guided single-seat control valve for non-cavitating liquids, steam and gas. KOSO top-guided valves are simpler and more compact than cage-guided designs. 501T covers 1/2–8 inches, plug from 1/8 inch; the angle body is 511T. Linear, Eq% and On-Off characteristics.

520T is a micro-flow version with a needle plug of 1/64–1/16 inch and rangeability of 6.8–8.8; pressure rating ANSI 150–600 and JIS 10K–40K.

Body materials: carbon steel, chrome-molybdenum steel and stainless steel. Trim SUS316, Stellite overlay or TFE soft insert. 501T metal seat leakage is 0.01 % of rated Cv, soft seat Class VI.

Key features:

• Simple and compact design, easy maintenance
• For non-cavitating liquids, steam and gas
• Dedicated 520T model for micro flows
• Soft seat Class VI
• Temperature up to +538 °C, cryogenic down to −196 °C for 501T

Specifications:

• Models: 501T Globe, 511T Angle, 520T Globe
• 501T size: 1/2"–8" (15A–200A), plug 1/8"–8"
• 520T size: 1/2"–1" (15A–25A), plug 1/64"–1/16"
• 501T pressure rating: ANSI 150–1500, JIS 10K–63K
• 520T pressure rating: ANSI 150–600, JIS 10K–40K
• 501T temperature: −196…+538 °C
• 520T temperature: −45…+538 °C
• End connection: flanged RF/RTJ, BW, SW
• Body material: WCB, WC6, LCB, CF8, CF8M etc.
• Trim material: SUS316, SUS316+Stellite, SUS316+TFE; 520T — SUS316+Stellite
• Characteristic: 501T: Linear, Eq%, On-Off; 520T: Needle
• Rangeability: 501T: 50:1–30:1; 520T: 6.8–8.8
• Leakage: metal: 0.01 % rated Cv; soft seat: Class VI
• Actuators: 5200LA, 6300LA, 3500LB, 3600LB, 3800LA

Application: Non-cavitating water, condensate, air and steam in general chemical and power plant loops; dosing and minimum flows (520T).

Before ordering: 501T is not intended for cavitating service. Before ordering, specify medium, flow rate, pressures, temperature and leakage class.