- High cycle stainless steel piston actuator - Compact design, the outside diameter of the actuator is the same size as the bonnet flange - Advantages in multiport bodies and manifold valve assemblies - Control air connection in flow direction - CDSA sealing concept, see page 32 - Flexible diaphragm suspension - Encapsulated diaphragm - Clean and polished exterior design ideal for sterile wash downs
Control function (Cf.)： Pneumatically operated 217.30：Fail safe close (NC): Cf. 1 & 4 217.25：Fail safe open (NO): Cf. 2 & 5 Double acting (DA)： Cf. 3 & 6 Direction Control connection： At Cf. 4, 5 & 6 in flow direction, standard At Cf. 1, 2 & 3, 90° to flow direction Max. working pressure： Unidirectional (delta p = 100%) 217.30：Cf: Fail safe close EPDM diaphragm 8 bar (115 psi) PTFE diaphragm 7 bar (100 psi) 217.25： Cf: Fail safe open and double acting EPDM diaphragm 8 bar (115 psi) PTFE diaphragm 7 bar (100 psi) Higher working pressure may be achieved with different actuator. Please consult a SED factory representative for working pressure above the indicated maximum. Max. working temperature： 160°C (320°F) dependent on application Control pressure： 217.30：Cf. 1 & 4 4 - 7 bar (60 - 100 psi) 217.25：Cf. 1 & 4 5,5 -7 bar (80 - 100 psi) Cf. 2, 3, 5 & 6 5,5 - 7 bar (80 - 100 psi) Diaphragm material： EPDM or PTFE Valve body material：Forged 1.4435/ 316 L ASME/BPE Investment cast 1.4435/ 316 L Other alloys End connection： Butt weld ends see fold out page 21 Clamps and flanges see page 22 and 23 Special ends Actuators suitable for： Two-Way bodies, Welded configurations, T-bodies, Multiport bodies, Tank bottom bodies Flow rate： Kv in m3/h (Cv in GPM) see page 9 Diaphragm size： MA 8 Weight： 217.30：ca. 0,45 kg 217.25： ca. 0,44 kg Technical data also valid for multiport valve.
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