ARI-DP30 / DP32 / DP33 / DP34 / DP34T / DP34Tri / DP35

Transcription

1 ARI-DP30 / DP3 / DP33 / DP34 / DP34T / DP34Tri / DP35 Pneumatic actuator ARI-DP Pneumatic actuator ARI-DP ARI-DP30 Pneumatic actuator Page ARI-DP3 ARI-DP33 Pneumatic actuator DP-Actuator Extended stem on air failure Page ARI-DP34 Pneumatic actuator Page ARI-DP34T Pneumatic actuator DP-Actuator Retracted stem on air failure Page 6 ARI-DP34Tri Pneumatic actuator Page ARI-DP35 Pneumatic actuator Page sales@ultravalve.co.uk Features: Compact design Actuator with rolling diaphragm Actuator mountable in any position Travel up to mm DP3-34: Direct or reverse acting Burnished stem protected by bellow Max. air supply pressure 6 bar High spring thrust Maintenance-free O-ring sealing with flexible guiding Assembly of additional devices acc. to DIN IEC Operative ambient temperatures - C up to +0 C (DP3-34Tri optional: -50 C up to +0 C) Favourable size/ performance ratio Optional: C5-M design for DP3-34Tri (-40 C up to +0 C)

2 ARI-DP30 / DP3 / DP33 / DP34 Pneumatic actuator ARI-DP Pneumatic actuator ARI-DP30 / 3 / 33 / 34 Operating mode: Extended stem on air failure Name plate 9 Air connection Operating mode: Retracted stem on air failure Name plate Vent 5 4 Stem Bellow seal Standard Cr3+QT,.40+QT 3. Stem guide 3. Guiding band 3.3 O-ring (stem) 3.4 O-ring (guiding) 4 Retaining ring FSt -A8 5 8 Spring plate Lower diaphragm casing Bushing 9 Diaphragm flange 6/7 Diaphragm Diaphragm plate.457 EPDM50 or 4CR Cr3+QT,.40+QT PTFE +5%C.43 FSt (Fe/ZnBM) DD3+QT,.0335+QT DD3+QT,.0335+QT (C5-M coated) (powder coated) Cr3+QT,.40+QT DD3+QT,.0335+QT (Fe/ZnB) or Cr3+QT,.40+QT +Webbing DD3+QT,.0335+QT (Fe/Zn8) Standard 9 Bushing Cr3+QT,.40+QT Collar nut with sealing ring Compression spring Screwed cap Hexagon nut l 4 8-AB FDSiCr DC0,.0330 (Fe/Zn8) DD3+QT,.0335+QT DD3+QT,.0335+QT (powder coated) (C5-M coated) Polyethylene 8-A8 A4 Hexagon screw l 8.8-AB A4-70 Washer St -AB A4 Hexagon screw l 8.8-A8 A4-70 Eye nut l C5,.040 -AB A4 L Spare parts l Studs and nuts at temperatures below - C made ofa4-70 sales@ultravalve.co.uk C5-M O-ring Spring centring Upper diaphragm casing 6 A4 C5-M

3 ARI-DP30 / DP3 / DP33 / DP34 Actuators thrust Operating mode Type of actuator Spring range (bar) Air supply Spring Thrust pressure min. qty. (bar) (N) (pcs.) Travel mm Dead Travelvolume volume Travel JO mm Travel50 mm Travel 65 mm Dead Travel- Dead Travel- Dead Travelvolume volume volume volume volume volume Spring closes on air DPJO, -4,5 80 cm 0, -,0 0,4 -, DP3 0,8 -,4 50 cm,5-,9 DPJJ 400 cm,0-3,8 0, -,0 0,4-, 0,8 -,4,5-3,0,7-,7 failure,0-4,0 (stem extending by spring),3-3,7 0, -,0 0,4-, 0,8 -,4 DP34,0 -,0 800 cm,5-3,0,0-4,0, -3,0,4-3,6 4,8 00, ,4, , , , 780 4,4, , , , , 570 4, , , , , , ,7 0,7 0,6 0,6 0,7 0,9 0,8, 0,8, 0,8 -.., 0,8 -.., 0,8 0,7 0,7 0,7 0,7 0, ,9,,,,,,0,.. -,0,.. -,4,4,6,8 5,,0,4,7 3, 5,,0,4, ,7 5, , ,0 4,5 3,7,7 5,, , Operating mode Type of actuator Spring range (bar) DPJO 80 cm 0,6 -,5 DP3 50 cm Spring opens on air failure DPJJ (stem retracting by spring) 400 cm DP cm 0, -,0 0, -,0 0, -,0 Air supply Spring Thrust pressure min. qty. (bar) (N) (pcs.) , 490 4, , d) 780 4,4 d) d) d) , 570 4, Travel mm Dead Travelvolume volume 0, 0,7 0, 0,7 0, 0,7 0, 0,7 0,9 0,8 0,9 0,8 0,9 0,8 0,9 0,8 0,9 0,9 0,8 0,8 0,9 0,8 Travel JO mm Travel50 mm Travel 65 mm Dead Travel- Dead Travel- Dead Travelvolume volume volume volume volume volume 0,7 0,7 0,7 0,7 0,7 0,7 0,7 0,9, 0,9, 0,9, 0,9, 0,9, 0,9, 0,9,4,4,4,4,,4,6,8 5,,4,4,4,4,4,4,6,6,4,6,6,4,6,4,6,8 5,,8 5,,8 5,,8 5,,8 5,,8 5, Air supply pressure max. to actuator: 6 bar Restriction: d) 3,5 bar When using accessories, the corresponding air consumption has to be obseived sales@ultravalve.co.uk

4 ARI-DP30 / DP3 / DP33 / DP34 Dimensions and weights r/ja c/ja I. M A I, I DP30 / 3 / DP33 DP34 Type of actuator DP30 DP3 DP33 DP34 -column mounting 0A H 3 9 I 3 I 3 I I 354 I 365 I 380 I I I 486 I I 486 I 506 I 538 I 548 L 8 68 I 8 I 99 I 3 68 I 8 99 I 3 I 8 8 I 3 I 8 I 40 I 58 I 78 8 I 58 I 78 I 3 I 3 A D 30 M M6 M6 M6 M6 L (9) L (45) 0D M M / M / M4x,5 / M6 / M6x,5 M / M / M4x,5 / M6 / M6x,5 M6 / M E max. (Screw-in depth) / / / 9 I 8 36 G (inch) /4" /4" /4" 3/8" Weight (kg) * The construction heights H of the actuator units vary due to the different lengths of the distance columns L, which results from the excess length of the stem (83 mm, 98 mm, 30 mml, and the different sorina ranaes (bench settinasl of the actuator units sales@ultravalve.co.uk

5 ARI-DP30 / DP3 / DP33 / DP34 Accessories Top mounted handwheel (refer to page ) 3/-way solenoid valves directly controlled with manual operating device (Air is vented in the rest position (incl. standard female connector) ci! rl k 3 Throttling valves (Increases operation time in 'open' and 'closed' direction) Check valve with throttling function (Increases operation time in 'open' or 'closed' direction) Lock-up valve (Holds the air in the actuator in the event of air failure) Air set including gauge (Reduces air pressure and removes dust and water droplets) Limit switch (to denote end of travel) electrical (mechanical) opener/shutter Limit switch (to denote end of travel) inductive (contactless) opener/shutter Proximity sensors (to denote end of travel in housing) Position indicator (analogue feedback of valve position in housing) Pneumatic and electropneumatic positioner with column design (allocation of valve control and control signal) Electropneumatic positioner with direct mounting ( DP3 /DP3 3 ) (allocation of valve control and control signal) sales@ultravalve.co.uk

6 ARI-DP34T Pneumatic actuator ARI-DP Pneumatic actuator ARI-DP34T Operating mode: Extended stem on air failure Vent 4 3 S Vent 7 6 Name plate Air connection Operating mode: Retracted stem on air failure Stem Bellow seal Stem guide Guiding band O-ring (stem) O-ring (guiding) Scraper Retaining ring Spring plate Lower diaphragm casing Bushing 9 Diaphragm flange 6/ Diaphragm Diaphragm plate Compression spring Spring centring Upper diaphragm casing Screwed cap Vent Standard C5-M Vent Cr3-+QT,.40-+QT.457 EPDM50 or 4CR Cr3-+QT,.40-+QT.457 PTFE +5%C FSt -AB A FSt (Fe/Zn8M) FSt (Fe/NiP50) DD3+QT,.0335+QT DD3+QT,.0335+QT (powder coated) ( C5-M coated) Cr3+QT,.40+QT DD3+QT,.0335+QT (Fe/ZnB) or Cr3+QT,.40+QT +Webbing DD3+QT,.0335+QT (Fe/Zn8) FDSiCr DC0,.0330 (Fe/ZnB) DD3+QT,.0335+QT DD3+QT,.0335+QT (powder coated) ( C5-M coated) Polyethylene \ Air connection Name plate 9 Hexagon nut J Hexagon screw l Washer Hexagon screw l Eye nut l Usit-ring Stem extension Slotted nut Stem guide Guiding band O-ring O-ring Scraper 3 Intermediate housing 33 Hexagon nut 88 Pipe works Standard L Spare parts l Studs and nuts at temperatures below - C made ofa4-70 sales@ultravalve.co.uk C5-M A4 8-AB A AB A4 St -AB A AB C5,.040 -A8 St / Cr3+QT,.40+QT St Cr3+QT,.40+QT PTFE 5%C DD3+QT,.0335+QT DD3+QT,.0335+QT (C5-M coated) (powder coated) 8-A8 St /6CrNiMoli7--,

7 ARI-DP34T Actuators thrust Operating mode Type of actuator Spring range Air supply pressure min. Thrust Spring qty. Travel 30 mm Dead Travel volume volume Travel 50 mm Travel65mm Dead Travel Dead Travel volume volume volume volume (bar) (bar) (N) (pcs.) 0,-,0 0,4-,! 0,8-,4 DP34T,0-,0 (x800) 600 cm,5-3,0 Spring closes on air failure,0-4,0 (stem extending by spring), -3,0,4-3,6, , , , , ,5 3, , ,9 4,7 4, 4,7 4, 4, , 4,7 7,5 4,7 3, 5,4 5,4 7,9 7,9 7,9 3,6, 6,, ,4, 6,0 6,0 7,9 7,9 3,4 - -, Operating mode Type of actuator Spring range Air supply Thrust Spring pressure min. qty. Travel 30 mm Dead Travel volume volume Travel 50 mm Travel65mm Dead Travel Dead Travel volume volume volume volume (bar) (bar) (N) (pcs.)! DP34T Spring opens on air failure (stem retracting by spring) (x800) 0,-,0 600 cm, ) ,,4 5,,4 5,,4 5,,4 5,,4 5,,4 7, 8,7 5, 7, 8,7 5, 7, 8,7 5, 7, 8,7 5, 7, 8,7 5, 7, 8,7 5, Air supply pressure max. to actuator: 6 bar l strengthened design When using accessories, the corresponding air consumption has to be observed sales@ultravalve.co.uk

8 ARI-DP34T Dimensions and weights Type of actuator DP34T 4-column mountina 0A 405 H * 678 I 708 I 78 I 760 I 770 L * 8 I 58 I 78 I 3 I 3 A 50 0D 30 M M6 L 4 (9) L3 30 (45) 0D3 6 M M6 / M Emax. (Screw-in depth) 36 G (inch) 3/8" Weight (kg) 6 * The construction heights H of the actuator units vary due to the different lengths of the distance columns L, which results from the excess length of the stem (83 mm, 98 mm, 30 mm), and the different sprinq ranqes (bench settinqs) of the actuator units sales@ultravalve.co.uk

9 ARI-DP34T Accessories Top mounted handwheel (refer to page ) 3/-way solenoid valves directly controlled with manual operating device (Air is vented in the rest position (incl. standard female connector) d! rlk 3 Throttling valves (Increases operation time in 'open' or 'closed' direction) Check valve with throttling function (Increases operation time in 'open' or 'closed' direction) Lock-up valve (Holds the air in the actuator in the event of air failure) Air set including gauge (Reduces air pressure and removes dust and water droplets) Limit switch (to denote end of travel) electrical (mechanical) opener/shutter Limit switch (to denote end of travel) inductive (contactless) opener/ shutter Proximity sensors (to denote end of travel in housing) Position indicator (analogue feedback of valve position in housing) Pneumatic and electropneumatic positioner with column design (allocation of valve control and control signal) sales@ultravalve.co.uk

10 ARI-DP34Tri Pneumatic actuator ARI-DP Pneumatic actuator ARI-DP34Tri Operating mode: Extended stem on air failure / Vent.-----,---- '"!- -: =tt L c:e Name plate Air connection G/ Standard C5-M Standard C5-M 8-AB A4 Stem Cr3-+0T,.40-+0T.457 Hexagon nut J Bellow seal EPDM50 or 4CR Hexagon screw J 8.8-AB A4-70 Stem guide Cr3-+0T,.40-+0T.457 Washer St -AB A4 3. Guiding band PTFE +5%C Hexagon screw J 8.8-AB A O-ring (stem) 4 Eye nut l C5,.040 -AB A O-ring (guiding) 7 Usit-ring St / 3.5 Scraper 8 Stem extension Cr3+QT,.40+QT 4 Retaining ring FSt -AB 5 Spring plate Lower diaphragm casino 6/7 Diaphragm FSt (Fe/NiP50) DD3+QT,.0335+QT DD3+QT,.0335+QT (powder coated) ( C5-M coated) Cr3+QT,.40+QT DD3-+0T, T (Fe/ZnB) or Cr3-+0T,.40-+0T +Webbing Diaphragm plate DD3+QT,.0335+QT (Fe/ZnB) Compression spring FDSiCr Spring centring Upper diaphragm casino Screwed cap DC0,.0330 (Fe/ZnB) 8 Bushing 9 Diaphragm flange A FSt (Fe/Zn8M) DD3+QT,.0335+QT DD3+QT,.0335+QT (powder coated) ( C5-M coated) Polyethylene Slotted nut St 30. Stem guide Cr3+QT,.40+QT 30. Guiding band PTFE 5%C 30.3 O-ring 30.4 O-ring 30.5 Scraper 3 Intermediate housing 33 Hexagon nut 88 Pipe works DD3+QT,.0335+QT DD3+QT,.0335+QT (powder coated) (C5-M coated) 8-AB St /6CrNiMoi7--, L Spare parts l Studs and nuts at temperatures below - C made ofa4-70 sales@ultravalve.co.uk

11 ARI-DP34Tri Actuators thrust Operating mode Travel JO mm Travel 50 mm Travel65mm Travel 75 mm Spring Air supply Thrust Spring Type of range pressure min. qty. Dead Travel- Dead Travel- Dead Travel- Dead Travelactuator volume volume volume volume volume volume volume volume I DP34Tri (bar) (bar) (N) (pcs.) 0, -,0,5 47 4,3 7, 4,7,8 5,4 5, ,4-,,7 94 6, 7, 8,0,8 9,3 5, ,4, ,3 5,3 0,8-,4, , 7, 8,0, (3x800),0-,0, , 5, cm,5-3,0 3, ,9, Spring closes on air failure,0-4,0 4, ,9,8 5, 5, (stem extending by spring),-3,0 3, ,6 7, ,4-3,6 4, 565 4, 7, Air supply pressure max. to actuator: 5 bar When using accessories, the corresponding air consumption has to be observed sales@ultravalve.co.uk

12 ARI-DP34Tri Dimensions and weights r/ja A (/)--=-0=3 _J I M _J Type of actuator 0A H 900 I 930 I L 8 I 58 I A 00 M L L3 003 M Emax. G Weight (inch) (kg) DP34Tri 4-column mounting M6 4 (9) 30 (45) 6 M 36 /" 50 I 98 I 99 I 3 I 3 * The construction heights H of the actuator units vary due to the different lengths of the distance columns L, which results from the excess length of the stem (83 mm, 98 mm, 30 mml, and the different sorina ranaes (bench settinasl of the actuator units sales@ultravalve.co.uk

13 ARI-DP34Tri Accessories Top mounted handwheel (refer to page ) 3/-way solenoid valves directly controlled with manual operating device (Air is vented in the rest position (incl. standard female connector) ci! rl k 3 Throttling valves (Increases operation time in 'open' or 'closed' direction) Check valve with throttling function (Increases operation time in 'open' or 'closed' direction) Lock-up valve (Holds the air in the actuator in the event of air failure) Air set including gauge (Reduces air pressure and removes dust and water droplets) Limit switch (to denote end of travel) electrical (mechanical) opener/shutter Limit switch (to denote end of travel) inductive (contactless) opener/ shutter Proximity sensors (to denote end of travel in housing) Position indicator (analogue feedback of valve position in housing) Pneumatic and electropneumatic positioner with column design (allocation of valve control and control signal) sales@ultravalve.co.uk

14 ARI-DP35 Pneumatic actuator ARI-DP Pneumatic actuator ARI-DP35 Operating mode: Extended stem on air failure 60 S Vent (optional) Vent S S9 Name plate fj -- Air connection Air connection (optional) S3 3 Operating mode: Retracted stem on air failure S3 54 Air connection (optional) S8 9 / 5 5S 5 54 Air connection 5 S9 S Name plate Vent (optional) Vent Vent Stem Cr3+QT,.40+QT 5 Compression spring FDSiCr Stem guide Cr3+QT,.40+QT 5 Diaphragm flange Cr3+QT,.40+QT Lower diaphragm casing P65GH,.045 / S5JR, Stem ring Cr3+QT,.40+QT Rolling diaphragm + Webbing 54 Quadring EPDM Diaphragm plate St 5-3 G 03 g,.0570 G 03 g 55 Clamp screw Cr3+QT,.40+QT Compression spring FDSiCr 56 Clamping sleeve Cr3+QT,.40+QT Spring centring St 5-3 G 03 g,.0570 G 03 g 57 Spacer disc Cr3+QT,.40+QT Upper diaphragm casing Hexagon nut J P65GH,.045 / S5JR, Grooved pin A C35E,. 59 Slotted nut 7 -AB 8.8 -AB 60 Ring bolt C5E,.4 St-AB L Spare parts l Studs and nuts at temperatures below - C made ofa4-70 Hexagon screw J Washer Hexagon screw J 50 Limit stopper.9-a8 Cr3+QT,.40+QT sales@ultravalve.co.uk

15 ARI-DP35 Actuators thrust Operating mode Travel 50 mm Travel65mm Travel90 mm Travel mm Spring Air supply Thrust Spring Type of range pressure min. qty. Dead Travel- Dead Travel- Dead Travel- Dead Travelactuator volume volume volume volume volume volume volume volume (bar) (bar) (N) (pcs.),97 3,80 4, ,7 4, DP35,7-3,80 4, ,4, cm Spring closes on air,30-3,80 4, ,3 5,5.... failure (stem extending by spring),80-3,80 4, ,8 34,0 Operating mode Travel SO mm Travel65mm Travel90 mm Travel mm Spring Air supply Thrust Spring Type of range pressure min. qty. Dead Travel- Dead Travel- Dead Travel- Dead Travelactuator volume volume volume volume volume volume volume volume (bar) (bar) (NJ (pcs.) 0,60-0, ,8 4, DP35 0,60-0, ,8, cm Spring opens on air 0,60-, ,8 5, failure (stem retracting by spring) 0,60-, ,8 34 Air supply pressure max. to actuator: 6 bar When using accessories, the corresponding air consumption has to be observed sales@ultravalve.co.uk

16 ARI-DP35 Dimensions and weights :r: _J w (J) A M Type of actuator DP35 4-column mounting 0A 755 H * 984 L * 4 A 50 0D 34 M M7 L3 40 M M7 / M36 x,5 E max. 45 G (inch) " Weight (kg) 35 * The construction heights H of the actuator units vary due to the different lengths of the distance columns L, which results from the excess length of the stem (S = 98mm, 30mm), and the different sorino ranges (bench settings) of the actuator units sales@ultravalve.co.uk

17 ARI-DP35 Accessories Top mounted handwheel (refer to page ) 3/-way solenoid valves directly controlled with manual operating device (Air is vented in the rest position (incl. standard female connector) Throttling valves (Increases operation time in 'open' or 'closed' direction) Check valve with throttling function (Increases operation time in 'open' or 'closed' direction) Lock-up valve (Holds the air in the actuator in the event of air failure) Air set including gauge (Reduces air pressure and removes dust and water droplets) Limit switch (to denote end of travel) electrical (mechanical) opener/shutter Limit switch (to denote end of travel) inductive (contactless) opener/ shutter Proximity sensors (to denote end of travel in housing) Position indicator (analogue feedback of valve position in housing) Pneumatic and electropneumatic positioner with column design (allocation of valve control and control signal) sales@ultravalve.co.uk

18 ARI-DP30 / DP3 / DP33 / DP34 / DP34T / DP34Tri / DP35 Accessories: Top mounted handwheel 0D ir--vt-+---jz N I 4 V.4-l---, tt 39 ffi- ---v fffi' DPJO / DP3 / DP33 / DP34 Top mounted handwheel Dimensions and weights 0D H DPJO DP3 DP33 DP34 Dimensions and weights D 4 6 Weight (with actuator) (kg) Weight (with actuator) (kg) DP34T/ DP34Tri Top mounted handwheel with worm gear 458 DP34T H Parts Stem extension Usit-ring N :r: DP35 Top mounted handwheel with bevel gear DP35 Dimensions and weights 0D 500 Weight (with actuator) (kg) 365 H Stem guide Guiding band 0-ring 0-ring Scraper Bushing Hexagon screw Washer Nut Torsion lock Cylinder screw 44 Distance column 47 Stem 48 Traverse 50 5 Axial-washer Needle bearing 5 Threaded bush Catch pin Lubricating nipple Covering for traverse 58 Handwheel 59 Safety cap 64 Worm gear L Spare parts sales@ultravalve.co.uk DP34Tri C5-M Standard Cr3+QT,.40+QT.457 St / 4CrMoS7+QT, QT PTFE +5%C Cr3+QT,.40+QT 8.8 -A4G St -A4G Cr3+QT,.40+QT.457 S5JR,.0037 A A4G SMn30+C, C (Fe/ZnB) Cr3+QT,.40-+QT.457 EN-JS49, EN-JS49 EN-GJS-400-U-LT (C5-M coated) (Fe/ZnB) St St CuZn35Ni3MnAIPb-R490, CC493K CW7 OR-R /PA St, Cu A A4G S5JR,.0037 (Fe/Zn8).457 Fe P0,.0330 Fe P0,.0330 (epoxy coated) (C5-M coated) SMn30+C,.075+C.457 (epoxy coated)

19 ARI-DP30 / DP3 / DP33 / DP34 / DP34T / DP34Tri / DP35 Accessories/ Special design 97 Lower diaphragm 7 casino 35 Usit-ring...!---tt ::::ie l:!!!a;mf-98 fik-----i' l-fj'= Dimensions and weights DP3 DP33 DP34 max. H Weight I (kg) 9 3 Cap 98 Straight pin 97 DP3 / DP33 / DP34 with travel limitation - adjustable mechanical limit stop on the actuator - for opening and closing direction l Traverse 96 Stem extension 99 Cylinder screw Stem guiding Stem guiding 0 59 DD3+QT,.0335+QT /oowder coated) ST/.0037 (Fe/ Zn/ B) 4CrMoS7+QT,.44+QT Cr3+QT,.40+QT CrNi-8, A4G SMnPb30+C,.07+C 7H-A4G Hexagon bolt 8.8-A4G 4 Retaining ring Fst-AB L Spare parts li'9'=.f% Spring plate Lower diaphragm casino Usit-ring 5 Damping tube 7 Stem guide 36 Stem extension 6 Dimensions and weights DP3 DP33 DP34 DP34T max. H Weight l I (kg) C75S,.48 DD3+QT,.0335+QT /oowder coated) St/ 4CrMoS7+QT, PTFE, Cr3+QT,.40+QT Cr3+QT,.40+QT 7 Flange 9 Cylinder screw 8.8-AB Washer St/A4G 8 DP3 / DP33 / DP34 / DP34T with damping tube, hydraulic Distance column 0 Hexagon bolt Stem guiding L Spare parts Cr3+QT,.40+QT 8.8-AG SMnPb30+C,.07+C Special design Actuators for sub-zero temperatures-40 C to 0 c (on request) Actuators for aggressive environments DP in short design (on request) Top mounted handwheel- short design (on request) (on request) sales@ultravalve.co.uk

20 Application ARI-DP30 / DP3 / DP33 / DP34 / DP34T / DP34Tri / DP35 Application / Set up and operation mode The single acting pneumatic actuators series DP are designed to be mounted directly on control valves and stop valves. They supply large forces for the valve operation with short (- seconds) lifting times on air supply or on air failure. Please contact the supplier or manufacturer if there are any questions. Set up and operation mode The pneumatic actuators series DP converts pneumatic pressure into a linear travel at the actuator stem. Depending on the air supply pressure and different control signals the actuator is producing appropriate forces at the stem. Depending on the air supply pressure and different control signals the actuator is producing appropriate forces at the stem. Thus following operating modes can be achieved:,,extended stem (on air failure) or,,retracted stem (on air failure). The compression springs and also the rolling diaphragm are laied out for approx. about one million double travels. Please indicate when ordering: - Type of actuator - Operating mode - Spring range - Nominal travel - Connection dimensions of the valve - Accessories Example: ARI-DP34; Operating mode: extended stem on air failure;,5-3 bar; travel 50 mm; A= 0 mm; stem excess length = 83 mm; M = M; E = 5 mm sales@ultravalve.co.uk