Manual Chapter 1 Equalisation Valve: G1 / G2 / DN250 / DN800 This manual describes the Equalisation Valve as a safety device and component of a vessel system. The manual must be read completely by the employee responsible for installation, coissioning and operation of the system, before any handling is executed. 1 st Generation 2 nd Generation Contents: Chapter 1 cover and data sheet 1-2 Chapter 2 intended use 3 Chapter 3 general description 3 Chapter 4 coissioning 4 Chapter 5 operation 4 Chapter 6 maintenance 5 dimensional drawing G1 annex 1 dimensional drawing G2 annex 2 spare parts list annex 3 Ü-U-Ventil-G1-2-allg-E.doc 1
Chapter 1 data sheet TV Equalisation Valve Type: G1 and G2 Standard (valid only for vessel relief) Type: G1 DN 250 Type: G1 DN 800 Type: G2 DN 250 Type: G2 DN 800 total weight: 12,5 kg 90 kg 11 kg 91 kg response pressure overpressure: 40 mbar 40 mbar 40 mbar 40 mbar response pressure vacuum: 15 mbar 15 mbar 15 mbar 15 mbar opening with overpressure D = 247 D = 800 D = 201 D = 770 opening with vacuum of the valve s body:: d = 150 d = 650 d =... d =... pressure relief area at: air flow 25 m/s and pressure value 10 mbar above the corresponding standard activation pressure: p+ = 1.230 m³/h p+ = 11,060 m³/h p+ = 1.394 m³/h p+ = 3,960 m³/h and below the vacuum value: p- = 780 m³/h p- = 7.080 m³/h p- = 1.195 m³/h p- = 3,960 m³/h max. air flow volume at: overpressure 40 mbar : vacuum 15 mbar : effective relief area: A at 10 mbar p p+ = 2.095 m³/h p- = 1.272 m³/h 0.023 m² Ü 0.014 m² U p+ = 11.300 m³/h p- = 9.185 m³/h 0.125 m² Ü 0.100 m² U p+ = 2.264 m³/h p- = 3.632 m³/h 0.025 m² Ü 0.037 m² U p+ = 8.325 m³/h p- = 12.950 m³/h 0.091 m² Ü 0.43 m² U position of installation: horizontal max. pressure equalisation: depending on system permissible temperatures: ambient temperatur: -30... +50 C process temperatur: +120 C at max. +50 C ambient temperatur drawing no.: E5100010 E5200010 E5100120 E5100500 pitch : holes: springs, overpressure, no. off: springs, vacuum, no. off: surface treatment: material: deviations from the standard execution: 295 8 x 12 DIN 24154 3 1 valve body: weather protection hood: valve body: seals: springs: 861 24 x 14 DIN 24154 8 8 hot-dip galvanised s. s., untreated hot-dip galvanised s. s., untreated S235JRG2 1.4571 AISI 316 Ti silicone profile spring steel 280 8 x 17 4 4 valve body: weather protection hood: valve body: weather protct. hood: seals: springs: 860 32 x 18 8 8 s. s., untreated engineering plastic, untreated 1.4571 AISI 316 Ti ABS silicone profile 1.4310 AISI 301............... Ü-U-Ventil-G1-2-allg-E.doc 2
Chapter 2 Intended Use The TV equalisation valve type G1 and G2 is must be used strictly within the boundaries as indicated and limited by the ranges in the data sheet. The vessel system must be protected or otherwise enabled to withstand the effects of pressure and surge shocks. It is not to be used as explosion protection as it is not pressure shock resistant! All other uses are not in compliance with the intended use. Increasing the activation pressure hinders the flow and jeopardizes the safety concept of the system to be protected. Non-compliance with the boundaries of the intended may result in damage to property. In borderline cases, where the application s conditions are close to the ranges indictated in the data sheet, TV can be asked to check application. In cases where TV was not informed about the conditions under which the valve is to be used, the sole responsibility for compliance with the intended use is with the user. Chapter 3 General Description: The equalisation valve ensures pressure equalisation during loading and unloading of the vessel or as in cases of an insufficiently working filter. This construction works as follows: The valve responds to pressure fluctuations (overpressure and vacuum) in excess of the activation pressure values for which it has been designed. The valve s working elements open gradually upward (overpressure) and downward (negative pressure), respectively and re-close when the pressure no longer exceeds the activation pressure. Once the vessel s pressure is neutralised, the valve s circumferential internal seals guarantee that the conveyed or stored material is not emitted into the atmosphere and prevents the ingress of humidity. The cross section which enables and defines the equalisation flow depends on several factors and is key value to the pressure equalisation design. Operational Parameters Preceding or following equipment is to be separately protected by suitable means. Ü-U-Ventil-G1-2-allg-E.doc 3
Chapter 4 Coissioning The valve s internal parts are never to be obstructed in their mobility. Lifting Devices Use of lifting devices for installation and de-installation are not to have an impact on the valve s internal parts, especially the springs. Flange gasket Liquid silicone or a suitable engineering plastic string with a diameter of 3 is to be used as sealing material. Bolted connection The flange is to lie flush on the mating flange on site. no. off and type of bolt as per the table below Details of Flange Connection G1 G2 DN 250 DN 800 DN 250 DN 800 No. off flange bolts 8 24 8 32 type of bolt acc. to DIN 931 execution hot dip galvanised flange pitch diameter M10 x M12 x M16 x M16 x DIN 24 154 295 DIN 24 154 861 280 860 flange thickness 5 5 8 10 Ü-U-Ventil-G1-2-allg-E.doc 4
Chapter 5 Operation The following points are to be taken into consideration during pressure relief: - during pressure relief dust, air or gas will be emitted and may affect an indefinable area. The efficiency of the pressure relief is reduced in the following cases: - unauthorised manipulation of the springs - internal valve parts sticking to the seal - weight affecting internal valve parts - corrosion and dirt - snow and ice obstructing the movable parts Chapter 6 Maintenance The Equalisation Valves Series G1 und G2 are maintenance-free. Seals The silicon seals are resistant to ageing and chemical influences. Seals destroyed or affected by chemicals are to be replaced and secured in their position using liquid silicone. Exchange of Seals instructions - Remove old seals and silicone remnants. - Mount new seals fixing the with liquid silicone. Leave to dry for 2-3 hours. - Apply liquid silicone between the joints. - Ensure that the seal s lip has no folds. Paint Painting carried out after delivery is not to obstruct or prevent the mobility of any part of the valve. Spare Parts Original spare parts are to be used in all cases (refer to spare parts list annex 3 Ü-U-Ventil-G1-2-allg-E.doc 5
annex 1 dimensional drawing G1 Kombiniertes Über-/Unterdruckventil Pressure Equalisation Valve Soupape de Sécurité Pression / Dépression Maßblatt / Dimensional Drawing / Dessin d'ensemble C d Überdruck pressure surpression Unterdruck vacuum dépression H s D Lks B Typ Nennweite d D Lks Anzahl der Löcher B C H s Gewicht kg Type Nominal Width d D Lks Number of holes B C H s Weight kg Type Diamètre Nominale d D Lks Quantité de trous B C H s Poids kg DN 250 150 247 295 8 x 12 330 350 218 5 12,5 DN 800 650 800 861 24 x 14 900 1003 529 5 90 Ü-U-Ventil-G1-2-allg-E.doc 6
annex 2 dimensional drawings G2 Ü-U-Ventil-G1-2-allg-E.doc 7
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annex 3 spare parts list - Parts recoended for storage are printed in bold letters - Please ensure that you have a sufficient number of spare parts on stock Please mention the following on your order: - com.-no.:... - type of valve: pressure equalisation valve G? (1 or 2). DN... - spare part name(s):... - number required:... - delivery address:... - contact name:... - delivery date:... Item #: No. off Valve G1 : Description : Article #: DN 250 DN 800 DN 250 DN 800 1 3 8 tension spring overpressure 2 1 8 tension spring vacuum 3 4 16 j-bolt 4 1 1 lid gasket overpressure 5 1 1 lid gasket vacuum 6 1 1 flange gasket 7 1 1 weather protection cover 0002.0110 0002.0310 Item #: No. off Valve G2 : Description : Article-#: DN 250 DN 800 DN 250 DN 800 1 4 8 tension spring overpressure 2 4 8 tension spring vacuum 3 1 1 lid gasket overpressure 4 1 1 lid gasket vacuum 5 1 1 flange gasket 6 1 1 weather protection cover 0002.0610 0002.0710 Ü-U-Ventil-G1-2-allg-E.doc 9