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©COMEV

AL

 V

AL

VE SYSTEMS 

Technical Dept. Ref. IOM - PIST

ON (LIFT

 DISC) CHECK V

AL

VES, UNIFLOW® 3P-35 - Ed.18/02

Comeval V

alve Systems reserves the right to alter any technical data contained in this Manual without prior notice. Regularly updated data on www

.comeval.es

IOM - PISTON (LIFT DISC) CHECK VALVES, UNIFLOW® 3P-35

Page 1

INSTALLATION, OPERATING

AND MAINTENANCE MANUAL

PISTON / LIFT-DISC CHECK VALVES

Contents

UNIFLOW® 3P

UNIFLOW® 35

1. GENERAL INFORMATION ON THE MANUAL ..............2

2. NOTES ON POSSIBLE DANGERS ................................2

2.1 Significance of symbols

 ..............................................2

2.2 Explanatory notes on safety information .....................2

3. PRESERVATION, STORAGE, HANDLING AND 

TRANSPORT ......................................................................2

4. DESCRIPTION ................................................................2

4.1 General Description / Operating principles .................2

4.2 Area of Application ......................................................2

4.3 Technical data – remarks ............................................2

4.4 Marking/nameplate .....................................................3

4.5 CE marking .................................................................3

5. INSTALLATION ...............................................................3

5.1 General remarks on installation ..................................3

5.2 Requirements at the place of installation ....................4

6. COMMISSIONING & OPERATION .................................4

7. CARE AND MAINTENANCE ..........................................5

8. TROUBLESHOOTING ....................................................5

9. TROUBLESHOOTING TABLE .......................................5

10. DISMANTLING THE VALVE OR THE COVER ............6

11. GOODS RETURN & DISPOSAL  .................................6

12. WARRANTY / GUARANTEE ........................................6

13. PARTS LIST ..................................................................7

14. ANNEXES .....................................................................8

14.1  Declaration of Conformity .........................................8

14.2  Data Sheet ................................................................8

Summary of Contents for UNIFLOW 3P

Page 1: ...SIBLE DANGERS 2 2 1 Significance of symbols 2 2 2 Explanatory notes on safety information 2 3 PRESERVATION STORAGE HANDLING AND TRANSPORT 2 4 DESCRIPTION 2 4 1 General Description Operating principles 2 4 2 Area of Application 2 4 3 Technical data remarks 2 4 4 Marking nameplate 3 4 5 CE marking 3 5 INSTALLATION 3 5 1 General remarks on installation 3 5 2 Requirements at the place of installation ...

Page 2: ...with Data Sheet and product marking must also be observed and complied with for safely using the product 3 PRESERVATION STORAGE HANDLING AND TRANSPORT ATTENTION Protect against external force impacts vibrations etc Allow only skilled personnel suitable handling and lifting equipment must be used Always use suitable protection equipment and minimize the use of human body force at any step to avoid ...

Page 3: ...r performance Observe all applicable safety measures during installation Remove flange covers or any other remaining packing storage protection if present Lay pipelines such that damaging transverse bending and torsional forces are avoided Protect valves from dirt during construction work The interior of the valve and the pipeline must be free of foreign particles Protect the valve soft parts from...

Page 4: ...quirements at the place of installation Downstream from a disruptive element pump valve elbow pipe reduction leave as much distance as possible mini mum distance recommended 6 times the valve diameter 6xDN Upstream from a disruptive element leave at least a distance of 2xDN Aggressive environmental conditions may reduce the life span of the product Consider special construction protective measures...

Page 5: ...asket and tighten the cover bolts evenly crosswise with moderate and uniform torque Retighten them if leakage is detected under pressure If it is not possible to repair the damages replace the valve and contact us for assistance After any maintenance work please refer to chapters 5 and 6 for installation commissioning Recommended Spare parts Use only original spare parts It is advisable to keep bo...

Page 6: ...ecified in the General Sales Terms of COMEVAL VALVE SYSTEMS valid at the time of delivery or by way of departure in the contract of sale itself We guarantee freedom of faults in compliance with state of the art technology and the confirmed application No warranty claims are accepted for any damage caused as the result of incorrect handling or disregard of this Manual Data Sheet and relevant regula...

Page 7: ...al data contained in this Manual without prior notice Regularly updated data on www comeval es IOM PISTON LIFT DISC CHECK VALVES UNIFLOW 3P 35 Page 7 13 PARTS LIST Nº PART 1 Body 2 Disc 3 Bushing 4 Cover 5 Eye bolt 6 Cover gasket 7 Cover bolt 8 Cover nut 9 Spring option Detailed view with spring option recomended for size 6 and for vertical pipeline UNIFLOW 3P ...

Page 8: ...ny technical data contained in this Manual without prior notice Regularly updated data on www comeval es IOM PISTON LIFT DISC CHECK VALVES UNIFLOW 3P 35 Page 8 14 ANNEXES 14 1 Declaration of Conformity DC20_07EN 14 2 Data Sheet DS20 Updated documents on www comeval es Nº PART 01 Body 02 Disc 04 Cover 06 Cover gasket 08 Cover bolt 09 Spring UNIFLOW 35 ...

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