Related Manuals for ITRON 8600 Series
Summary of Contents for ITRON 8600 Series
- Page 1 Safety Shut-off Valve Series 8600 3850992803 Instruction manual w w w . i t r o n . c o m...
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Page 3: General Features
General Features APPLICATION The safety shut-off valve (SSV) of 8600 series is a self-operated, direct acting, spring loaded safety device designed for use in gas distribution and pressure regulation systems with network pressure up to 25 bar. PRODUCT DESCRIPTION SSV8600 protects the downstream pipe against over-pressure or low pressure failures. -
Page 4: Technical Features
TECHNICAL FEATURES · Inlet pressure range P zul : 25 bar (Steel body) 19,2 bar (Cast iron body) · Over pressure shut-off range (OPSO): 0,028 - · Low pressure shut-off range (LPSO): · Accuracy class OPSO: up to AG LPSO: 0 up to AG ·... - Page 5 SPRING SELECTION TABLES OVER PRESSURE SHUT-OFF SPRINGS / OPSO Characteristics of the springs Who (mbar) Who (bar) Colour 8631/8632 Code 861 1/12 8621/22 8641/8642 (ø 150) (ø150/TR) ( ø 90) (ø 90/TR) 20565233 28 ÷ 65 Yellow 20565234 45 ÷ 100 2.
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Page 6: Operational Schematic
OPERATIONAL SCHEMATIC Figure 1 Solo SSV 8600... - Page 7 Figure 2 INTEGRATED SSV 8600 by RB 4000 Regulator INTEGRATED SSV 8600 by RB 4700 Regulator INLET PRESSURE OUTLET PRESSURE...
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Page 8: Overall Dimensions And Weights
OVERALL DIMENSIONS AND WEIGHTS Figure 3... - Page 9 (dimensions are given in mm) Model DN Size Dimension 861 1 / 8612 8631 / 8632 8641 / 8642 8621 / 8622 DN 25 Weight, kg DN 40 Weight, kg DN 50 Weight, kg DN 80 Weight, kg DN 100 Weight, kg...
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Page 10: Operation
OPERATION Sectional View Figure 4... - Page 11 SSV OPERATING PRINCIPLE Safety Shut-off Valve 8600 (SSV 8600) is designed as independent safety device in order to protect the downstream pipe against over- or under-pressure failures by immediately stopping of the gas flow. This happens as soon as the downstream pressure reaches the pre-adjusted over pressure (OPSO) or under-pressure (LPSO) set points.
- Page 12 REMOTE POSITION INDICATOR (REED CONTACT) Item Description Shaft with magnetic element Connector Figure 5 Reed contact Reed contact SSV Shaft Plug Figure 6 EEx barrier Cable 2 wire towards unit of control Hazardous area Non hazardous area...
- Page 13 REMOTE POSITION INDICATOR (REED CONTACT) ASSEMBLY ON THE FIELD: Remote position indicator can be delivered as "Assembly Kit" and mounted on Safety shut-off device directly on the field. This has to be done in the following way ( items mentioned below refer only to Figure 7): Manually trip the Safety Shut-off valve by the mean of button for voluntary intervention (see Figure 4), so that it is in the closed position;...
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Page 14: Installation
Installation All delivered Safety shut-off valves SSV 8600 are produced, checked for resistance and tightness and adjusted in accordance with the requirements of EC Pressure Equipment Directive 97/23/EG. In any case the acting national norms and standards about installation, start-up and maintenance of the safety devices and gas installations have to be strictly respected. - Page 15 · the functional characteristics indicated on the name plate must correspond to the installing and operating conditions; · direction of gas flow has to correspond to the arrow on the safety device body. Figure 9 Figures 8 and 9: Description Position Upstream valve Differential pressure manometer...
- Page 16 The Safety shut-off valve can be installed in the horizontally or vertically. The device should be not impaired in its function by other installation components. In particular the effectiveness/operability must be ensured by measuring and breathing lines each time. To install the safety device the following should be provided: ·...
- Page 17 To connect the sensing lines: We recommend to use for impulse sensing lines the 8/10 pipe, which is connected to the angle (WE10-P/LR) impulse intake (15) and on the downstream pipe to the pressure intake (plug connection DN ⁄ ‘’) as shown on the Figure 10. These connections must be inserted in a straight section of the downstream pipe.
- Page 18 Start-up COMMISSIONING / RESSETING OF THE SAFETY SHUT-OFF VALVE Safety shut of valve SSV8600 can be delivered having only OPSO function (over pressure shut-off) or both OPSO + LPSO (over and low pressure shut-off). To identify the delivered model refer please to "Selection of the SSV 8600 models"...
- Page 19 SETTING The Safety shut-off valve is supplied with set points specified in the order. The set point can be adjusted in the range mentionned in the “spring selection table“. When the installed spring is appropriate to obtain the required pressure, proceed as follows (Figures 8 and 1 1): ·...
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Page 20: Maintenance
Afterwards a tightness test with 1. 1 X PS must be performed. When changing pressure containing parts their compliance with PED must be assured. After Guarantee only with repair by Itron. The maintenance works required for the Safety shut-off valve are closely linked to the quality of gas supplied (moisture content, liquid hydrocarbons, impurities in general) and the degree of filtration performed upstream of the safety device. - Page 21 · The device has to be also regularly examined for corrosion danger in the interior and external area and be taken from use if noticeable corrosion is discovered. · The device must be cleaned with a wet cloth only. Do not use any alcohol containing solvent or cleaning agents All pressures must be discharged before performing any maintenance operation on the safety device!
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Page 22: Troubleshooting
TROUBLE SHOOTING Figure 12... -
Page 23: Parts List
Parts List Figure 13... - Page 24 Figure 14 O-ring Screw Valve seat Screw Gasket Plug Safety washer SSV reset stem Flexible pin Screw Valve plug Screw Brace Safety washer Spring guide Cover O-ring Snap ring Plug Manual resetting button SSV reset stem Spring Screw Plug Washer Seeger ring Lever O-ring...
- Page 25 Figure 15 Screw 1 10 Screw Plate Screw 1 1 1 Lever 1 12 Plate 1 13 O-ring Roller 1 14 Closing spring Lever Guide 1 15 SSV stem 1 16 Lever 1 1 7 SSV body Spring 1 18 Lever 1 19 Spring guide (OPSO)
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Page 26: Maintenance Tools
Maintenance Tools Type: Tool: DN 25 DN 40 / DN 50 DN 80 DN100 65 - 69 - 84 65 - 69 65 - 69 65 - 69 85 - 97 - 130 85 - 97 - 130 85 - 97 -130 85 - 97 -130 80 - 84 84 - 96... - Page 27 Pressure loss calculation Pressure loss of the shut-off valve Series 8600 is a function of pressure, temperature and gas density: Δ P = (Q / Cg) where: Δ P : pressure loss (bar) absolute working pressure (bar) flow rate referred to normal conditions (Nm flow coefficient (see table below), natural gas with relative density d=0,6 and absolute temperature 273K.
- Page 28 Itron GmbH Hardeckstraße 2 76185 Karlsruhe Tel. +49 721 5981 0 Fax +49 721 5981 189...
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