Butterfly Valves - MKW Heating Controls
Contents
1. VB W Issue 6 1 Date Of Issue 23 12 2010 2010 Sontay Limited All rights reserved Butterfly Valves Specification Type Flangeless wafer rubber lined Function Isolating or regulating Installation Clamping between two flanges To suit flanges PN6 PN10 PN16 Valve shut off pressures 6 bar 10 bar 16 bar Standard Materials Body Cast iron GG25 Disc S S 431 Shaft S S 431 Pin S S 431 Lining EPDM 40 to 110 C Media type Water weak acids Leakage Standard Tight shut off 16 bar Undercut Tight shut off 6 bar Country of origin Netherlands NB All butterfly valves 125mm and above are supplied with undercut discs as standard This reduces the break off torque required to operate the valves with out affecting leakage rating up to a maximum pressure of 6 bar UK Sales Tel 0845 345 7253 Page lof 5 Features Range of linings for different applications e Tight shut off Product Codes VB W50 50mm Butterfly valve VB W65 65mm Butterfly valve VB W80 80mm Butterfly valve VB W100 100mm Butterfly valve VB W125 125mm Butterfly valve VB W150 150mm Butterfly valve VB W200 200mm Butterfly valve Linkages VB LK1 50 to 80mm 16Nm actuator linkage VB LK2 100 to 125mm 16 to 62Nm actuator linkage VB LK3 50 to 65mm failsafe actuator linkage VB LKU1 VB W100 Unic10 15 actuator linkage VB LKU2 VB W125 Unic10 15 actuator linkage VB LKU3 VB W150 Unic10 30 actuator linkage VB LKU42. VB W200 Unic20 actuator linkage VB LKN4 VB W200 Nucom 10nM actuator linkage See table on page 5 for actuator selection International Tel 44 1732 861225 Technical Overview The VB W are a series of range of high specification flange less wafer type butterfly valves capable of tight shut off To achieve this high level of sealing relatively high torque actuators are required to break away from the closed position Standard and undercut disc types are available Standard disc types give tight shut off up to 16 bar while undercut disc types provide tight shut off up to 6 bar but require less torque to operate allowing smaller actuators to be used Torque The operating torque of butterfly valves of less than DN1000 is generally the result of 3 partial torques 1 Seating torque Torque to overcome the rubber seat friction 2 Bearing friction torque Torque to overcome the friction between the shaft and bear ing 3 Dynamic torque Torque developed by pressure differences across a partly opened valve as a result of high flow velocity Operating torques DN Differential Pressure mm 6 bar 10 bar 16 bar NB The operating torques show above are valid ONLY for the following conditions The fluid is water without solid particles at a temperature of 1 C to 80 C The water does not contain contaminants which may increase the friction between the seating surfaces There is at least one o
3. N A VB NUCOM10NS 15 VB UNIC 10 30 24 VB UNIC10 30 230 VB UNIC 10 30 24 VB UNIC10 30 230 VB NUCOM10NS 30 VB UNIC 10 30 24 VB UNIC10 30 230 VB UNIC 10 30 24 VB UNIC10 30 230 VB NUCOM10NS 30 VB UNIC20 24 VB UNIC20 230 VB UNIC20 24 VB UNIC20 230 VB NUCOM10NM 15 Use Table 2 to select the a failsafe actuator amp linkage for a butterfly valve of known size and known maximum D P Table 2 6 bar DP 10 bar DP Valve Control Torque Nm Torque Nm Ro Failsafe Actuator Required Actuator Linkage Actuator Required Actuator Linkage ti 16 ti 16 6 24V On Off VA DA1FE 230V On Off VA DA2 FE ti 24V On Off VA DA1FE 13 230V On Off VA DA2 FE t NB Failsafe actuators are not available for butterfly valves larger than 65mm or for a D P of greater than 10 bar See torque information on page 2 of this datasheet International Tel 44 1732 861225 UK Sales Tel 0845 345 7253 Page 5 of 5 For the latest information and product updates register at www sontay com Whilst every effort has been made to ensure the accuracy of this specification Sontay cannot accept responsibility for damage injury loss or expense resulting from errors or omissions In the interest of technical improvement this specification may be altered without notice
4. 24VModulating 230VModulating 24VOn Off 230VOn Off 24VRaise Lower 230VRaise Lower 230VModulating 24VOn Off 230VOn Off 24V Raise Lower 230VRaise Lower 230VModulating 24VOn Off 230VOn Off 24VRaise Lower 230V Raise Lower 230VModulating VA DA1E VA DA2E VA DA1E VA DA2E VA DM1 1E VA DM2 2E VA DA1E VA DA2E VA DA1E VA DA2E VA DM1 1E VA DM2 2E VA DAL1E VA DAL2E VA DAL1E VA DAL2E VA DML1 1E VA DML2 2E VA DAGIE VA DAG2E VA DAGIE VA DAG2E VA DMG1 1E VA DMG2 2 E VB UNIC10 15 24 VB UNIC10 15 230 VB UNIC10 15 24 VB UNIC10 15 230 VB NUCOM10NS 15 VB UNIC10 30 24 VB UNIC10 30 230 VB UNIC10 30 24 VB UNIC10 30 230 VB NUCOM10NS 30 VB UNIC20 24 VB UNIC20 230 VB UNIC20 24 VB UNIC20 230 VB NUCOM10NM 15 VA DA2E VA DA1E VA DA2E VA DM1 1E VA DM2 2E VA DA1E VA DA2E VA DA1E VA DA2E VA DM1 1E VA DM2 2E VA DAL1E VA DAL2E VA DAL1E VA DAL2E VA DML1 1E VA DML2 2E VA DAGIE VA DAG2 E VA DAGIE VA DAGE VA DMG1 1E VA DMG2 2E VB UNIC10 15 24 VB UNIC10 15 230 VB UNIC10 15 24 VB UNIC10 15 230 VB NUCOM10NS 15 VB UNIC10 30 24 VB UNIC10 30 230 VB UNIC10 30 24 VB UNIC10 30 230 VB NUCOM10NS 30 VB UNIC20 24 VB UNIC20 230 VB UNIC20 24 VB UNIC20 230 VB NUCOM10NM 15 VA DA2E VA DA1E VA DA2E VA DM1 1E VA DM2 2E VA DA1E VA DA2E VA DA1E VA DA2E VA DM1 1E VA DM2 2E VA DAL1E VA DAL2E VA DAL1E VA DAL2E VA DML1 1E VA DML2 2E VB UNIC10 15 24 VB UNIC10 15 230 VB UNIC10 15 24 VB UNIC10 15 230
5. 732 861225 VB W Issue 6 1 Date Of Issue 23 12 2010 2010 Sontay Limited All rights reserved Dimensions Construction amp Material 01 Shaft 06 Conical pin COC 02 Bush 07 Disc 03 O ring 08 Shaft 04 Rubber lined body 10 Sealing ring L gt 05 Bearing 11 Plug Part Dimensions mm Weight Code A B C D E T G H K ZA X Y k VB W100 100 150 VB W125 125 182 VB W150 150 210 VB W200 200 262 OOOO CO O CO A A A A RS HYD UK Sales Tel 0845 345 7253 Page 4of5 International Tel 44 1732 861225 VB W Issue 6 1 Date Of Issue 23 12 2010 2010 Sontay Limited All rights reserved Valve amp Linkage Tables Use Table 1 to select the a non failsafe actuator amp linkage for a butterfly valve of known size and known maximum D P 6 bar DP 10 bar DP 16 bar DP Valve Control Signal Non Failsafe Torque Nm Required Actuator Linkage Actuator Part Code VA DA1E Torque Nm Required Actuator Linkage Actuator Linkage Part Code VA DA1E Actuator Torque Nm Part Code Required Actuator VB W100 VB W125 VB W150 24V On Of f 230VOn Off 24V Raise Lower 230V Raise Lower 24V Modulating 230V Modulating 24V On Off 230VOn Off 24V Raise Lower 230VRaise Lower 24VModulating 230VModulating 24VOn Off 230VOn Off 24VRaise Lower 230V Raise Lower 24V Modulating 230V Modulating 24V On Off 230VOn Off 24VRaise Lower 230VRaise Low er
6. he centre of the pipeline and with the shaft horizontally if possible 3 Check the bolts for proper size and length 4 Tighten the bolts in a crisscross fashion until the valve body metal touches the flange face Installation In A New Pipeline 1 Weld the flange to the pipe so that the sealing faces are parallel Caution Do not weld a connecting flange to the pipe with the valve installed in order to avoid overheating of the rubber lining 2 After cooling the flange position the valve in the centre of the pipeline and with the shaft horizontally if possible UK Sales Tel 0845 345 7253 Page 3 of 5 VB W Issue 6 1 Date Of Issue 23 12 2010 2010 Sontay Limited All rights reserved Installation In A New Pipeline continued NB Valves may be fitted when in fully closed position Valves fitted with spring to open actuators may be fitted when in the fully open position or in the fully closed position 3 Tighten the bolts in a crisscross fashion until the valve body metal touches the flange face Testing 1 Open and close the valve if possible by hand to en Sure no disc interference 2 Clean the pipe interior with a rinsing fluid compatible with the rubber lining and process 3 Connect the actuator if applicable to the power Supply in accordance with the user manual of the actuator 4 Check the operation and tightness when the system is under working pressure International Tel 44 1
7. losive gas or vapour 6 If practical actuate the valve through close open and open close cycles to check the correct function International Tel 44 1732 861225 Inspection continued Warning Avoid contact with the valve disc Immediately prior to installation check the flanges to which the valve is to be fastened The flanges shall have a raised face or a flat face The sealing face shall be flat without burrs grooves weld spatters sharp edges and free from oil The inside diameter shall be large enough to accommodate the protrusion of the valve disc when the valve is open The possibility of interference between disc and pipe shall be checked and avoided Also check that the inside diameter of the flange or pipe bore is not too large as this will reduce the flange to valve sealing of the gasket face Installation Between Flanges New valves do not require additional flange gaskets the lining will seal against the mating flange face Where practical valves in buried installations should be located in unpaved areas As the valve is bidirectional tight shut off the direction of installation is not relevant When installed in a horizontal pipe valves larger than DN 300 should have the shaft positioned horizontally Installation In An Existing Paperwork 1 Check that the installation length between the pipe flanges is enough to position the valve without damaging the rubber lining 2 Position the valve in t
8. peration cycle per month Flow velocity in the pipe is not more than 4 m s Flow velocity 354 flow rate in m3 h Valve size in mm 2 UK Sales Tel 0845 345 7253 Page 2 of 5 VB W Issue 6 1 Date Of Issue 23 12 2010 2010 Sontay Limited All rights reserved Flow Velocity The maximum flow velocities to avoid cavitations noise and vibration are as follows Liquids 5 m s Gases 50 m s Kv Values VB W50 VB W65 VB W80 VB W100 VB W125 VB W150 VB W200 Storage Of Valves Store the valve in dry dark and cool conditions preferably indoors with the actual valve temperature higher than the dew point If outdoor storage is unavoidable support the valves off the ground and protect the valves with a water tight cover Do not remove the valve packaging or end port protection until necessary for inspection or installation Store the valve in the slightly open position to avoid defor mation of the rubber lining Inspection 1 Inspect the valve visually for damage or contamination during transport handling and storage as this could adversely affect valve performance 2 Carefully unpack the valve 3 Check the tag plates if attached on the valve 4 Inspect the valve interior and lining It shall be clean free from foreign matter or damage 5 Check that all electric components are marked with the correct IP rating and hazardous class when the valve is to be used in a hazardous location exp
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