Two-way pneumatic valve O-off ball valves and pneumatic piston actuator components. DN15 ~ 200 floating ball type structure. DN250 "~ 300 for the fixed ball structure, the use of flexible lip seat structure with automatic wear compensation and relief action in the chamber, and thus a reliable seal and long life. GT series piston actuator using pneumatic actuators companies. The actuator has a small size, light weight, output power and other characteristics, and between the piston and cylinder with a low coefficient of friction non-metallic guide ring, avoid direct contact between the piston and cylinder. reduces friction, thus actuator is sensitive, long life .R2658 pneumatic O-off valve has a simple structure, small size, light weight, reliable sealing, long life, easy operation, and can be widely used in petroleum, chemical, power, light. 2 , Body Type: straight two open full-cavity mold casting valve Nominal Diameter: DN15 ~ 300mm Nominal pressure: L Grade: JIS 10K, ANSI 150 #, PN1.6MPa 8B (200A) less ...................... Floating ball 10B (250A) ............... fixed dome above the M-Class: JIS 20K, ANSI 300 #, PN4.0MPa 6.4MPa 6B (150A) The following ..................... floating ball type 8B (200A. ) .................. ... more fixed dome connection type flange connection: RF, bump-type flange standard: JB / T79.1-94 ANSI B16.5-1981 JIS B2201-1984 material: WCB, ZG1Cr18Ni9TI , ZG0Cr18Ni12Mo2Ti, Ti (CF8, CF8M, CF3, CF3M) (SCPH2, SCS13A, SCS14A) Note: You can provide standard bonnet on other materials according to user requirements: one of the casting and the body temperature: -20 ~ + 200 ℃ - 20 ~ 300 ℃ (seat material for PPL) packing: PTFE, graphite 3, valve components Spool form cylindrical spool through-hole ball valve quick opening flow characteristics of PTFE, reinforced polytetrafluoroethylene, for PPL material 2Cr13,1Cr18Ni9TI, 0Cr18Ni12Mo2Ti, Ti (CF8, CF8M, CF3, CF3M) PTFE gasket, asbestos spool angle 90 ° 4, actuator type GTX single acting pneumatic piston actuator Structure (with spring return) GTD double acting pneumatic actuator supply pressure piston 0.4 ~ 0.7MPa Air Connection 1 / 4NPT Valve Acting Type Single acting: air-to-close or open air double role: a control valve according to the signal transfer switches, valves Guan 5, performance seat leakage rate: completely cut off no leakage 6, annex (according to requirements) solenoid valve, air filter regulator, hand wheel, limit switches, valve position transmitter, pneumatic accelerator, to secure his position valve Other. 7, technical parameters and performance indicators ● valve main technical parameters Nominal Diameter (mm) 15 20 25 32 40 50 65 80 100 125 150 200 250 Rated flow coefficient Kv 20 38 72 112 170 273 400 510 940 1450 2200 3500 5100 air Nominal operating pressure KPa 500 ° 90 MPa 1.0,1.6,4.0,6.4 rated corner fast opening flow characteristic