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Summary of Contents for Stafsjö BV
- Page 1 Original Installation and service instruction Knife gate valves...
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Page 2: Table Of Contents
Original Installation and service instruction Knife gate valves Table of contents General .................................. 3 Symbols ................................. 3 Valve destination ..............................3 Related documents ..............................3 Valve marking ................................ 4 A5 Transport, storage and handling..........................4 Storage and transport: ..............................4 Handling: .................................. -
Page 3: A) General
Valve destination Valve types BV, D2G, HG, HL, HP, HX, JTV, MP, MV, RKO, RKS, SLF, SLV, SLH, SLX, TV, XV and WB are destined – after installation between flange(s) in a pipe system – to shut off, to open or to control the flow within the admissible pressure/temperature limits. -
Page 4: A4 Valve Marking
Valve marking Each valve is labelled as follows: Additional: Markings on casted valve body: 0045 DN XXXX: (mm) nominal diameter PN XX: (bar) pressure class of valve body i.e. GGG50 valve body material Max PS Valve body/differential: 10/10 BAR Ser.No: Serial number consisting of year –... -
Page 5: B) Installation/Functional Check
Specifically note that threaded hole on top of pneumatic cylinder type EC, is only for handling the cylinder itself. See figure 2. Fig.2 Installation/functional check This instruction includes safety recommendations for foreseeable risks at installation into a (pipe) system. The user is responsible to complete this instruction with warning notes for system-specific aspects. -
Page 6: B3 Pressure, Flow Direction And Valve Position
• Valves types XV, HL, HG, HP, HX, BV, WB, D2G , SLV, SLF, SLH and SLX are bi-directional and can therefore be installed independent of the pressure ratio in any direction in the pipe line. - Page 7 Fig. 4 Assembling of handwheel Handwheel with non-rising Handwheel with rising-stem stem 1. Assemble the handwheel to 1. Loosen the nuts from the 2. Assemble the handwheel 3. Remove the safety pin. For safety reasons, the pin shall the valve. Check that there is tie rods and remove the unit to the tie rods and fixate it not any play between the...
- Page 8 All Valve types of cast grey iron material (WB): Extra caution is necessary when installation due to the brittel material. Place the valve between flanges. First tighten the through going bolts so the flanges is close to the valve to not more than maximum torque as below. Then end by tighten the bolts for blind holes. Lbf.ft Tighten the bolts first manually and then evenly and crosswise, for a uniform load of the gasket, with a torque as required by the gasket manufacturer.
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Page 9: B6 Installation In An Atex-Classified Area
Only for Valves with electric actuator: Ensure that the actuator motor stops by the signal of the limit switch for closed and open position of the actuator. Exceptional force may damage the valve. The signal of the torque switch may be used for signal for faulted conditions. -
Page 10: C) Service And Maintenance
Disassemble the valve in following steps: Depressurise the pipe section and drain it completely. Disconnect all electric and/or pneumatic/hydraulic connections. Fasten and use soft straps if necessary (see also Fig.1 in section A5). Make sure not to damage the valve, gate, gate guards or any accessory. -
Page 11: C2 Manual And Automatic Actuation
1. The gland box packing together with the gland makes sure that no media reaches surrounding environment where the gate exit the valve body. When the gland box packing (braids) shall be changed, the gland bolts must be loosened and the the pipe section shall be depressurised and empty. - Page 12 Gate does not open/close Fault in actuator See instruction for actuator/accessories completely Fault in limit switch setting See the relevant maintenance instructions Valve clogged issued by Stafsjö Download: www.stafsjo.com Damaged seat/sealing profile or gate Gate does not open/close Fault in actuator See the relevant instruction for actuator in a smooth movement Valve clogged...
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Page 13: Declaration In Compliance With Eu-Directives
Declaration in compliance with EU-Directives The manufacturer Stafsjö Valves AB, SE-618 95 Stavsjö Sweden, declares that valve types D2G, HG, HL, HP, JTV, MP, MV, RKO, RKS, SLF, SLV, SLH, SLX, TV, XV and WB are manufactured in accordance with the requirements of the following standard and EU-Directives. - Page 14 Stafsjö Valves AB SE-618 95 Stavsjö Sweden Tel: +46 11 39 31 00 Fax: +46 11 39 30 67 info@stafsjo.se www.stafsjo.com...
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