Shanghai Thinktank Process Management Co., Ltd Pneumatic Mixing Type Control Valves

Description SPECIFICATIONS Body Type Three-way cast globe valve Nominal size 3/4’’, 1’’, 1-1/4’’, 1-1/2’’, 2’’, 2-1/2’’, 3’’, 4’’, 5’’, 6’’, 8’’, 10’’, 12’’, 14’’ Pressure rating • ANSI Class 125, 150, 300, 600 • JIS 10K, 16K, 20K, 30K, 40K • PN1.6, 4.0, 6.4, 10.0 Mpa End connection • Flanged End: FF, RF, RJ, LG According to ANSI B16.5, JIS B2201, JB/T79.1, PN1.6MPa, JB/T79.2 • Welded End: SW, BW Material A216 WCB, A216WC6, A352 LCB, A351 CF8, A351CF8M, A351 CF3M, A351 CF3 Bonnet • Plain bonnet (-17 to 230°C) • Extension bonnet(-60 to -29 ℃ or over 230°C) • Bellows Seal Gland type Bolted Gland Packing V-shaped PTFE, PTFE, Flexible graphite Gasket material Stainless steel(SUS304, SUS316, SUS316L), copper, aluminum Three-ways Mixing Type Control Valves Three-ways Diverting Type Control Valves 1. Connect Pipe 2. Double-screw Bolt 3. Hexagon Nut 4. Sealing 5. Gasket 6. Lower Bonnet 7. Body 8. Plug 9. Upper Seat 10. Stem 11. Bonnet 12. Packing Spring 13&14. Nuts&Bolts 15. Spring Plate 16&17. Studs&Nuts 18. Locknut 19. Stem Connector 20. Actuator Trim Valve plug Three-way, V-port with linear characteristics Actuator Type Single-acting diaphragm actuator, Spring type piston actuator, Double acting piton actuator Diaphragm material Cloth embedded nylon and ethylene propylene rubber Spring range • 20 to 100 kPa(0.2 to 1.0 kgf/cm2) • 40 to 200 kPa(0.4 to 2.0 kgf/cm2) • 80 to 240 kPa(0.8 to 2.4 kgf/cm2) Supply pressure 0.14, 0.25, 0.28, 0.4, 0.5 Mpa Air connection Rc1/4 or 1/4NPT internal thread Ambient temperature -30 to 70℃ Valve action • FO: Air to close(Direct action actuator is combined.) • FC: Air to open(Reverse action actuator is combined.) Optional accessories • P/P or I/P Positioner • Air filter regulator • Top-mounted or Side-mounted Handwheel • Limit switch • Solenoid valve • Motion transmitter • Booster relay • Lock-up valve • Airlock relay • Others Performance Rated Kv value Refer to table 1. Flow characteristics (Refer to table 2) • Linear Leakage • Metal Seat According to IEC 60534-4:2006 Class IV, leakage less than 0.01% of maximum valve capacity. Inherent rangeability • 30:1 Hysteresis error • Without positioner: Within 3% F.S. • With positioner: Within 1% F.S. Linearity Without positioner: Within ±5% F.S. With positioner: Within ±1% F.S. the principle of action 3-way control valves direct action diverting type the principle of action 3-way control valves direct action mixing type Description: The plug structure of Three-way control valve is designed to flow to open. If valve plug in the valve seat that is mixing service control valve. There are two input ports and one outlet port(see Figure a, b). The valve plug is located on the outside of the valve seat that is diverting service control valve. There is one inlet port and two outlet ports (see Figure c, d). Due to the three-way control valve have opening and closing operation at the same time, so three-way control valve doesn’t have air to open or air to close such type. • For Direct Action Mixing Service, air failure means vertical pass(B → AB). But for Reverse Action Mixing Service, air failure means the flow is a horizontal pass (A → AB) • For Direct Action Diverting Service, air failure means horizontal pass (AB → A). But for Reverse Action Diverting Service, air failure means the flow is a vertical pass(AB → B)