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SISTO-10
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Diaphragm Valve Type Series Booklet

Legal information/Copyright Type Series Booklet SISTO-10 All rights reserved. The contents provided herein must neither be distributed, copied, reproduced, edited or processed for any other purpose, nor otherwise transmitted, published or made available to a third party without the manufacturer's express written consent. Subject to technical modification without prior notice. © SISTO Armaturen S.A., Echternach, Luxemburg 31/08/2020

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Diaphragm Valves Diaphragm Valves – No Dead Volume, Soft-seated, Glandless Diaphragm Valves Diaphragm Valves – No Dead Volume, Softseated, Glandless ▪ Condensate ▪ Corrosive fluids ▪ Cooling water ▪ Volatile fluids ▪ Solvents ▪ Seawater ▪ Fluids containing mineral oils ▪ Oil ▪ Organic fluids ▪ Cleaning agents ▪ Lubricants ▪ Dipping paints ▪ Wash water ▪ Other fluids on request. Operating data Operating properties Characteristic Nominal pressure Nominal size Max. permissible pressure [bar] ▪ General irrigation systems Main applications ▪ Chemical industry ▪ Industrial recirculation systems...

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Diaphragm Valves Diaphragm Valves – No Dead Volume, Soft-seated, Glandless Valve body materials ▪ Actuator type LAD-OF – Spring-to-open – Air-to-close Overview of available materials Material Material number Temperature limit Design details Design ▪ Actuator type LAD-SF – Air-to-open – Spring-to-close SISTO-LAP piston actuator ▪ Double-acting piston, piston rod extending from one end only, with or without spring ▪ Piston rod sealed by U-ring and scraper ring ▪ Soft-seated shut-off valve in straight-way pattern ▪ Piston with double cup seal and vulcanised metal disc ▪ Mechanical travel stops...

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Diaphragm Valves Diaphragm Valves – No Dead Volume, Soft-seated, Glandless SISTO-LAD diaphragm actuator Related documents ▪ Mounts directly on the valve, providing a compact assembly ▪ Minimised friction during actuation thanks to actuator diaphragm made of NBR ▪ Emergency operation of valve possible without compressed air supply (actuator type LAD-SF only) SISTO-LAP piston actuator ▪ Smooth, low-friction movement of the piston assembly (up to 250 mm diameter pistons) with double cup seal and vulcanised metal disc ▪ Actuators with optimised stroke variants ensure full valve travel with...

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Diaphragm Valves Diaphragm Valves – No Dead Volume, Soft-seated, Glandless SISTO-10 manually operated valve Design with 2-piece diaphragm Parts list Description Material number Bonnet Stem Diaphragm Standard, DN 15, DN 200-300 = 5.3103 Standard Standard Backing diaphragm Bearing disc PTFE disc Compressor Washer Washer Position indicator, lower part Position indicator, upper part Hexagon head bolt Stud Floating nut Nut Prevailing torque nut Support spiral Handwheel For DN 25-300 For DN 25-300 DN 15-20 = GD-ZnAl4Cu1 For bodies with PA or ECTFE coating (DN 15-20 only) For DN 25-150 DN 200-300...

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Diaphragm Valves Diaphragm Valves – No Dead Volume, Soft-seated, Glandless Materials of SISTO-LAD diaphragm actuator 920.5 547.5 950.1 LAD-AZ type LAD-SF type LAD-OF type Parts list Description Material number Lower housing section Upper housing section Bonnet Stem Piston rod O-ring Actuator diaphragm Guide bush Diaphragm plate Coupling Hexagon head bolt Compressed air port Nut Nut Spring Recommended spare parts We recommend having these parts replaced in our factory.

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Diaphragm Valves Diaphragm Valves – No Dead Volume, Soft-seated, Glandless Materials of SISTO-LAP piston actuator LAP-AZ type Parts list Part No. Material number Plain bearing AlMgSi AlCu4PbMgMn AlSi7Mg0.3 AlCu4PbMgMn AlSi7Mg0.3 Stainless steel X14CrMoS17 Stainless steel X14CrMoS17 Plastic – POM Lock washer Piston assembly Hexagon head bolt Stud Stud Recommended spare parts (= complete set of sealing elements) We recommend having these parts replace

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Diaphragm Valves Diaphragm Valves – No Dead Volume, Soft-seated, Glandless Material number

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Diaphragm Valves Diaphragm Valves – No Dead Volume, Soft-seated, Glandless Variants Illustrations of SISTO-10 manually operated valve variants With SISTO-LAP With electric actuator Stem extension With SISTO-LAD Chain wheel

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Diaphragm Valves Diaphragm Valves – No Dead Volume, Soft-seated, Glandless Variant illustrations of SISTO-LAD diaphragm actuator and accessories LAD-AZ type LAD-OF type LAD-SF type Configuration with positioner Configuration with proximity sensor 1) Filter/pressure reducer 2) Solenoid valve 3) Throttling valve Configuration with mechanical limit switches Configuration with solenoid valve

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Diaphragm Valves Diaphragm Valves – No Dead Volume, Soft-seated, Glandless Variant illustrations of SISTO-LAP piston actuator and accessories LAP-OF type LAP-SF type LAP-AZ type with emergency handwheel LAP-OF type with emergency handwheel LAP-SF type with emergency handwheel LAP-AZ type

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Diaphragm Valves Diaphragm Valves – No Dead Volume, Soft-seated, Glandless LAP-SF type with double piston Configuration with positioner Configuration with limit switches 1 1) Filter/pressure reducer 2) Solenoid valve LAP-AZ type with 5/2 directional control valve LAP-SF type with 3/2 directional control valve Description G1/8 in. for piston diameters 80/125/160 G1/4 in. for piston diameters 200/250/300 M12 for piston diameters 80/125 M20 for piston diameters 160 to 300 M24 for piston diameters D300/F14 optional Mating dimensions as per standard Flange connection: Pipe connection:

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Diaphragm Valves Diaphragm Valves – No Dead Volume, Soft-seated, Glandless Dimensions and weights Dimensions and weights of SISTO-10 manually operated valve l Manually operated valve Diaphragm valve prepared for SISTO-LAP piston actuator and electric actuator H [mm] Manually operated valve Handwheel turns approx. Centre-totop height Actuator flange Mating dimensions as per standard EN 558-1 R1 DIN EN 1092-2 DIN EN 1092-2, type B Face-to-face length: Flanges: Flange facing:

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Diaphragm Valves Diaphragm Valves – No Dead Volume, Soft-seated, Glandless Dimensions and weights of SISTO-LAD diaphragm actuator H Diaphragm valve with SISTO-LAD Add 5 mm for rubber-lined valves Add 50 mm for limit switch configuration

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