Type 3321 Globe Valves can be equipped with either electropneumatic, pneumatic or electric actuators: • Electropneumatic actuators with integrated or mounted i/p positioner (Type 3321-IP Control Valve) • Pneumatic actuators (Type 3321-PP Control Valve) • Electric actuators (Type 3321-E1 or Type 3321-E3 Control Valve) Valve body materials • Cast iron A 126 B for Class 125 • Spheroidal graphite iron A 395 for Class 150 • Cast steel A216 WCC for Class 150 or 300 • Stainless steel A351 CF8M for Class 150 or 300 • Metal or soft-seated valve plug The control valves can be optionally equipped with positioners, limit switches or contacts and resistance transmitters. Versions – Type 3321-IP Electropneumatic Globe Valve · With Type 3372 Electropneumatic Actuator, optionally with integrated positioner (120 cm² only, with plug connector, see Fig. 1) or Type 3725 Positioner (Fig. 3, Fig. 4), tight-closing function for completely venting or filling the actuator with air, reference variable 4 to 20 mA, max. 6 bar supply air, fail-safe position fail-close or fail-open, optionally with limit switch – Type 3321-PP Pneumatic Globe Valve (Fig. 2) · With Type 3371 Pneumatic Actuator with 120 cm² (up to NPS 2) or Type 3371 with 350 cm² (NPS 2½ and larger), fail-safe position fail-close or fail-open, optionally with limit switch – Type 3321-E1 Electric Globe Valve (Fig. 5) · NPS ½ to 2 with Type 5824-30 Electric Actuator for 230 V/50 Hz or 24 V/50 Hz, optionally with limit contacts, resistance transmitters, positioner