Pneumatic Universal. Actuator MOTORIZED VALVES USE TECHNICAL FEATURES OF THE ACTUATOR. Data sheet

Transcription

1 Data sheet. - 8 USE The motorized valve is specifically used for the interception and regulation of fluids in: systems using alternative energy industrial systems in general using hot and cold fluids automation systems Actuator The actuator is available in the following versions: SIMPLE EFFECT type: DOUBLE EFFECT type: it opens blowing compressed air in the outlet chamber and it automatically closes bringing it back to atmospheric pressure. (see functional diagram) it opens blowing compressed air in the outlet chamber and it closes blowing the compressed air in the return chamber. (see functional diagram) ACCESSORIES ON REQUEST speed-regulating limit switch micro box command electrovalve TECHNICAL FEATURES OF THE ACTUATOR maximum operating pressure: 8 bar minimum air supply pressure: bar operational room temperature: minimum -0 C maximum +8 C rotation: 90 MATERIAL USED IN THE ACTUATOR BODY EXTRUDED ALLUMINIUM UPPER O-RING CUT-WATER ANTI-EXPLOSION CUT-WATER LOWER O-RING CUT-WATER CUT-WATER SPACER RING P.T.F.E. (TEFLON ) % GRAPHITE 8 INDICATOR ARROW POLYAMMIDE PA SEEGER CUT-WATER POSITION INDICATOR 9 INDICATOR O-RING SEALING O-RING PISTON THRUST BEARING SLIDING BLOCK PISTON ELASTIC BAND P.T.F.E. (TEFLON ) % GRAPHITE PRESSURE REGULATOR STAINLESS EXTERNAL SPRING CHECK NUT REG. REGULATING DOWEL 8 INTERNAL SPRING 9 LEFT PLUG PLUG LOCK SCREW STAINLESS 0 RIGHT PLUG PLUG O-RINGS

2 SIMPLE-EFFECT actuator FUNCTIONAL DIAGRAM TOP VIEW TORSIONAL MOMENT -Y +Y MAD CLOSED POSITION MAC COUNTERCLOCKWISE OPEN POSITION 9 9 8Y 9Y 8Y MMC CLOCKWISE CLOSED POSITION Y -Y MMD See the above-mentioned diagram. In the opening phase, the actuator provides a decreasing output torque with the opening degree, while maintaining the supply pressure constant. The lowering is due to the fact that, in this phase, springs are subject to a deformation and absorb elastic potential energy. The aforementioned energy will be available during the closing phase. It s during this second phase, in fact, that springs stretch out and do their duty, without the need of any external power. The cut-off torque is therefore characterized by main values: Opening rotation: MAD: actuator torque with stretched-out springs MAC: actuator torque with compressed spring Closing rotation: MMC: compressed springs torque MMD: stretched-out springs torque DOUBLE EFFECT actuator FUNCTIONAL DIAGRAM TOP VIEW TORSIONAL MOVEMENT -Y +Y CLOSED POSITION OPEN POSITION CLOSED POSITION COUNTERCLOCKWISE 9 9 8Y 9Y 8Y CLOCKWISE +Y -Y Unlike the simple-effect model, this actuator features a nearly constant outlet torque, unchanged in both movement phases. In fact, the actuator doesn t have any return spring inside, therefore both the opening and the closing phases only depend on the supply pressure.

3 Valve bodies The ball cut-off ensures the best hydraulic tightness and reduced pressure loss. The valve body can be mounted in both flow directions, without distinction. -WAY FULL FLOW Ø / /8 / / / / / -WAY FULL FLOW AISI Ø / / / / -WAY FULL FLOW Ø / / / / -WAY FULL FLOW CAST IRON DN MATERIAL USED IN THE -WAY F/F ISO VALVE BODY 8 BODY CWN UNI EN COUPLING CWN UNI EN BALL CWN UNI EN ANTI-FRICTION SEAL P.T.F.E. ROD SEAL P.T.F.E. O-RING FKM 8 O-RING FKM 9 CONTROL ROD CWN UNI EN ISO FLANGE CWN UNI EN 8 9 MATERIAL USED IN THE -WAY F/F AISI ISO VALVE BODY BODY CF8M COUPLING CF8M BALL INOX AISI SEAL P.T.F.E. ROD WASHER P.T.F.E. O-RING FKM 8 CONTROL ROD INOX AISI 9 ROD SEAL P.T.F.E. O-RING FKM MATERIAL USED IN THE -WAY F/F/F ISO VALVE BODY 8 BODY CWN UNI EN COUPLING CWN UNI EN BALL CWN UNI EN ANTI-FRICTION SEAL P.T.F.E. ROD SEAL P.T.F.E. O-RING FKM 8 O-RING FKM CONTROL ROD CWN UNI EN

4 MATERIAL USED IN THE -WAY FLANGED CAST IRON VALVE BODY 8 9 In -way valves, the cut-off is made of a ball with a through hole. BODY G0 RING ASTM A BALL CWN O-RING BUNA WASHER ROD P.T.F.E. O-RING BUNA 8 ROD SEAL P.T.F.E. 9 PACKING SLEEVE AVP-9SMNPB HALF-TURN WASHER AISI 0 (DN-0) DISK SPRING UNI NUT UNI ROD STAINLESS AISI 0 T BALL L BALL OVERALL SIZE 8 / 0 0 /8 0 0 / / / / / / 98 /8 98 / 98 0 / / 0 / /

5 OVERALL SIZE AISI / / / / AISI / 98 0 / / 0 0 / * G = E/ * -Way / 98 0 / / 0 0 / * G = E/ * -Way / 98 0 / / 0 0 / CAST IRON FLANGED

6 OVERALL SIZE CAST IRON FLANGED FLUID-DYNAMIC FEATURES In order to provide an up-to-date service, Comparato Nello S.r.l. reserves the right to modify technical data, drawings, graphs and photos of this instruction manual at any time, without prior notice and photographs of this catalogue at any time and without prior notice. PN (bar) DIAGRAM PN = f(t) 0 MODEL ø DN Kv (m /h) PN / -, 0 0 /8 0 0 /, 0 0 Ø from /" to "/ / 0 9, 0 0 -WAY 0 0 Ø from /" to "/ / 89 0 Ø " and " / / T( C) 0 90 PN (bar) DIAGRAM PN = f(t) 0 /, / 0 9, 0 -WAY AISI 0 / 89 0 / /, WAY - DIVERTER / MIXER / 0,9 0 -WAY 0 / 0, / 0 8, T( C) 0 PN (bar) DIAGRAM PN = f(t) 0 / 89 0 AISI / WAY 0 0 CAST IRON / 0 FLANGED CAST IRON, FLANGED FLUIDS Water and EPDM & PTFE- compatible fluids Other fluids on request T( C) Kv S [m /h] (with p = 0kPa = bar) * TEMPERATURES * -WAY -WAY AISI -WAY -WAY FLANGED CAST IRON Minimum -0 C -0 C -0 C - C Maximum +0 C +0 C +0 C +0 C Higher temperatures on request HYDROTHERMAL SYSTEMS 0 CAIRO MONTENOTTE (SV) ITALIA VIALE DELLA LIBERTÀ LOCALITÀ FERRANIA Tel FAX info@comparato.com