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8

Important Notes

Safety note

The valve must only be installed by qualified staff.

Qualified staff are those persons who - through adequate training in engineering, the use and
application of safety equipment in accordance with regulations concerning safety systems, and first aid
& accident prevention - have achieved a recognised level of competence appropriate to the installation
and commissioning of this device.

Danger

The valve is under pressure during operation.

When loosening flanged connections or sealing plugs, hot water, steam, corrosive liquids
or toxic gases may escape. This presents the danger of severe burns and scalds to the
whole body or severe cases of poisoning.

Installation and maintenance work should only be carried out when the system is
depressurized.

The valve becomes hot or extremely cold during operation. This presents the risk of
severe burns to hands and arms. Installation and maintenance work should only be
carried out at room temperatures.

Sharp edges on internals present a danger of cuts to hands. Always wear industrial
gloves for installation and maintenance work.

Usage for the intended purpose

The swing flap non-return valves CB 1.../CB 2... ensure unidirectional flow in pipes by preventing a
backflow of liquids or gases.

Use this equipment only within the specified pressure and temperature ratings and check corrosion
resistance and chemical suitability for the application in question.

Summary of Contents for CB 14

Page 1: ...1 CB 1 CB 2 Installation Instructions 810707 02 Swing Flap Non Return Valves CB 1 CB 2 GESTRA Steam Systems GESTRA ...

Page 2: ... Description 10 Function 10 Technical data 11 Corrosion resistance 11 Sizing 11 Name plate marking 12 CB 1 CB 2 13 Installation notes 14 Installation Maintenance CB 1 15 CB 2 Replace springs O ring 16 17 Tools 17 Spare parts list CB 24S 18 Spare parts list CB 26 CB 26 S 19 Spare Parts CB 1 CB 2 15 Commissioning CB 1 CB 2 15 Operation Declaration of conformity 20 Annex ...

Page 3: ...3 Parts Drawing CB 1 Fig 1 A B D G E ...

Page 4: ...4 Parts Drawing CB 2 Fig 2 A B H C H D G F E ...

Page 5: ...5 A Eye bolt B Lock nut C Centering ring D Type designation on name plate or impressed on valve body E Body F O ring G Disc H Spring Key ...

Page 6: ... chart are valid for water at 20 C To read the pressure drop for other fluids the equivalent water volume flowrate must be calculated and used in the graph The values indicated in the chart are applicable to valves with horizontal flow With vertical flow insignificant deviations occur only within the range of partial opening Pressure drop p bar Volume flow V w Partial opening instable range Full o...

Page 7: ... chart are valid for water at 20 C To read the pressure drop for other fluids the equivalent water volume flowrate must be calculated and used in the graph The values indicated in the chart are applicable to valves with horizontal flow With vertical flow insignificant deviations occur only within the range of partial opening Pressure drop p bar Volume flow V w Partial opening instable range Full o...

Page 8: ...ere burns and scalds to the whole body or severe cases of poisoning Installation and maintenance work should only be carried out when the system is depressurized The valve becomes hot or extremely cold during operation This presents the risk of severe burns to hands and arms Installation and maintenance work should only be carried out at room temperatures Sharp edges on internals present a danger ...

Page 9: ...300 CB 26 50 100 125 300 CB 26 A 50 100 125 300 CE marking no yes yes yes no Ratings pursuant to article 9 of the PED1 Important Notes continued Gas Liquid Exception pursuant to article 3 3 Fluid group 1 2 1 2 Use CB 14 no yes no yes CB 24 S CB 26 yes yes yes yes CB 26 A 1 PED Pressure Equipment Directive ...

Page 10: ...sting the spring characteristic However this does not apply to CB 14 since this valve is not fitted with a spring Installation in horizontal or vertical upward flow lines with due regard to our installation recommendations The CB 1 CB 2 are equipped with an eyebolt for ease of installation and transport Please note that dual plate check valves should not be used on reciprocating compressor piston ...

Page 11: ...nology When used for its intended purpose Use CB without springs for temperatures above 300 C Pressure Temperature Ratings CB 24S bronze down to 200 C at nominal pressure DN 50 300 Temperature C 20 100 150 200 250 PN Max service pressure bar 16 16 16 14 13 6 16 When used for its intended purpose With springs made of bronze up to max 90 C Pressure Temperature Ratings CB 14 steel down to 10 C at nom...

Page 12: ...pecification impressed on valve body CB 14 DN 100 200 to EN 19 Fig 6 Specification plate CB 14 DN 250 300 to EN 19 Fig 7 Specification plate CB 24 S DN 50 80 to EN 19 Fig 8 Specification plate CB 24 S DN 100 200 to EN 19 Fig 9 Specification plate CB 26 DN 50 200 to EN 19 Fig 10 Specification plate CB 26 A DN 50 200 to EN 19 Fig 11 Specification plate CB 24 S CB 26 CB 26 A DN 250 300 to EN 19 Fig 1...

Page 13: ...eyebolt A is on top Insert bolts and tighten them evenly 5 Installation in vertical lines Insert off the shelf seal bottom 6 Install and align swing flap non return valve CB Insert off the shelf seal top Insert bolts and tighten them evenly When the volume flow reaches the instable range see Pressure Drop Chart during operation clatter may occur which gives rise to wear on the oscillating flap Fig...

Page 14: ...14 Installation continued Fig 13 Fig 14 Fig 16 incorrect correct optimum with pump Fig 15 ...

Page 15: ...re any special preparation prior to commissioning Unfavourably or incorrectly positioned swing flap non return valves will lead to loud clattering of the oscillating flap In case of clattering increase pump capacity Please observe the installation instructions on page 14 GESTRA Swing flap non return valves CB 1 do not require special maintenance The swing flap non return valves have to be replaced...

Page 16: ...This presents the risk of injuries to hands arms and face GESTRA Swing flap non return valves CB 2 do not require special maintenance However in certain cases it may be necessary to replace the springs or O rings Danger Swing flap non return valve CB 2 Remove springs and O rings if fitted Insert new O ring Insert new springs into the lateral guide Detach springs from support 1 2 3 4 ...

Page 17: ...B 2 Replace springs O ring continued Tools Combination pliers 180 mm DIN 5244 Aligning punch 80 mm Insert left and right spring into the support Check smooth operation of the flap Install swing flap non return valve in line 5 6 ...

Page 18: ...Stock code Stock code O ring EPDM 50 039276 037556 038624 038626 65 031443 033910 038633 038635 80 031753 033911 038642 038644 100 031493 033912 038651 038654 125 031769 033913 038662 038665 150 031525 033914 038673 038675 200 031540 033915 038683 038686 250 039283 033916 038694 038697 300 031573 033917 038705 038708 Spare Parts Spare Parts List CB 24 S O ring FPM F H ...

Page 19: ...de Stock code O ring EPDM 50 039276 037556 175843 039294 65 031443 033910 703368 039295 80 031753 033911 173844 039296 100 031493 033912 175839 039297 125 031769 033913 703369 039298 150 031525 033914 175841 039299 200 031540 033915 177839 039300 250 039283 033916 174450 039301 300 031573 033917 175131 039302 Spare Parts continued Spare Parts List CB 26 CB 26A O ring FPM F H ...

Page 20: ...ocedure as described in Annex III for CB 24 and CB 24 S Module A1 Applied conformity assessment procedure as described in Annex III for CB 26 and CB 26 A Module H verified by the Notified Body Registration No 0525 This declaration is no longer valid if modifications are made to the equipment without consultation with us Declaration of Conformity Bremen 15th April 2002 GESTRA GmbH Annex Quality Ass...

Page 21: ...21 For your notes ...

Page 22: ...22 For your notes ...

Page 23: ...23 For your notes ...

Page 24: ...002 Madrid Tel 00 34 91 51 52 032 Fax 00 34 91 41 36 747 51 52 036 E mail aromero flowserve com Flowserve DALCO Steam Products 2601 Grassland Drive Louisville KY 40299 Tel 00 15 02 4 95 01 54 4 95 17 88 Fax 00 15 02 4 95 16 08 E Mail dgoodwin flowserve com Flowserve Portuguesa Lda Av Dr Antunes Guimarães 1159 Porto 4100 082 Tel 0035122 61987 70 Fax 0035122 6107575 E mail jtavares flowserve com GES...

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