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INSTALLATION AND OPERATION MANUAL 31300CS SERIES

General

For complete information regarding the installation, operation, maintenance and
repair of the valve please see the full version of the instructions for installation, ope-
ration and maintenance of Högfors valves.

Valve disc must remain in closed position during transport, storage and installation.

Prohibited to hoist the valve from the

actuator.

Prohibited to remove the actuator during transportation, installation and operation.

Содержание 31300CS Series

Страница 1: ...INSTALLATION AND OPERATION MANUAL 31300CS SERIES 30 04 2014...

Страница 2: ...MANUAL 31300CS SERIES 2 CONTENT General 3 Transport and storage 4 Hoisting 5 Installation position 6 Recommended mounting 11 Welding 12 Flushing 13 Start up 14 Control use 15 Cavitation 17 Valve opera...

Страница 3: ...ir of the valve please see the full version of the instructions for installation ope ration and maintenance of H gfors valves Valve disc must remain in closed position during transport storage and ins...

Страница 4: ...justed at the factory Transport and storage When receiving the valve please check that there is no transportation damages The valve must be stored in a secure location away from rain The packing is no...

Страница 5: ...STALLATION AND OPERATION MANUAL 31300CS SERIES 5 Hoisting Please follow the recommended method for hoisting as shown below Please use soft cable for hoisting F rbjudet att lyfta ventilen i man verdone...

Страница 6: ...ION AND OPERATION MANUAL 31300CS SERIES 6 Installation postition Please do not install the valve in the lowest sections of the pipeline or other places where there is likely to be a concentration of i...

Страница 7: ...INSTALLATION AND OPERATION MANUAL 31300CS SERIES 7 The valve can be mounted in horizontal A vertical V or diagonal C pipeline...

Страница 8: ...SERIES 8 Please place the valve as far as possible from sources of turbulence pumps elbows and tees Minimum Clearances After the tee or tapping L1 DN x 3 Before the pump suction side L2 DN x 3 After...

Страница 9: ...INSTALLATION AND OPERATION MANUAL 31300CS SERIES 9 Do not install the pipeline support under the valve If the valve valve is the final item in the pipeline then a welded plug flange must be installed...

Страница 10: ...mmended position of the valve in the pipeline 1 shaft horizontally or 2 shaft inclined but as close as possible to the horizontal position Rekommenderad position Till ten position Till ten position Ej...

Страница 11: ...unting When installing with the recommended pipe insertions which are welded in the workshop the insertion length is 0 2 1 4 meters depending on the DN of the pipeline 0 2 1 4m Clean the pipes before...

Страница 12: ...ganic solvent or mechanically Connect the pipe and the valve together with 4 8 tack welds depending on the size of the valve DN Single tack weld length maximum 80 mm Tack welding order is counterclock...

Страница 13: ...er cushion Flushing After installation please flush the pipeline to remove impurities Fushing is done by adding pressure and flow in the pipeline Set the valve disc to the open position of 25 30 degre...

Страница 14: ...e The by pass valve size depends on the lenght of the pipeline If using too small DN size by pass valve it will be impossible to fill the pipeline within a reasonable given time The recommended DN siz...

Страница 15: ...ating angle range of the disk for control is 10 80 Flow KV values for the valves and the formula for the flow KV calculation can be found in the product card 10 80 In case of difficulty in the selecti...

Страница 16: ...alve Please use additional supports Pipeline reduction leads to an acceleration in the flow The acceptable flow rate for water Recommended velocity 2 m s Maximum allowable 5 m s Short time maximum all...

Страница 17: ...trol 2nd for shut off Cavitation Operation valve under continuous nt cavitation conditions can lead to accelerated wear of valve parts and significantly shorten the life of the valve Appearance of the...

Страница 18: ...the open position by a small angle 0 10 then before closing it is ne cessary to open the disk to a larger angle 25 30 for flushing impurities that may have been collected between the disk and the sea...

Страница 19: ...to ope rate the gear and handwheel Do not use any tools to operate the valve Do not try to adjust the actuator settings Disconnecting the actuator will lead to the loss of the factory settings of the...

Страница 20: ...box and an electric actuator have a mechanical position indicator Position OPEN Position SHUT If the valve is already installed in the pipeline the approximate position of the disk can be determined b...

Страница 21: ...ed by welding Mounting debris be tween the disc and seal The valve is not tight Leakage through by pass Make sure that by pass is closed The disk is not in shut position Check position of the disk by...

Страница 22: ...orque Use by pass to reduce pressure difference When you rotate the hand wheel the position of the disc does not change Keys on the stem have be come loose Check the position and condi tion of keys be...

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