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AKG-A/AKGS-A

AKG-A/AKGS-A
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Gate Valve Type Series Booklet

Legal information/Copyright Type Series Booklet AKG-A/AKGS-A All rights reserved. The contents provided herein must neither be distributed, copied, reproduced, edited or processed for any other purpose, nor otherwise transmitted, published or made available to a third party without the manufacturer's express written consent. Subject to technical modification without prior notice. © KSB SE & Co. KGaA, Frankenthal 04/10/2019

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Gate Valves Gate Valves to DIN/EN in Pressure Seal Design Gate Valves Gate Valves to DIN/EN in Pressure Seal Design AKG-A/AKGS-AValve body materials Material Overview of available materials Main applications ■ Fossil-fuelled power stations ■ Process engineering ■ Boiler feed applications ■ Boiler recirculation ■ Chemical industry ■ Petrochemical industry ■ Sugar industry ■ Mining ■ Descaling units ■ Pulp and paper industry ■ Shipbuilding ■ Snow-making systems ■ Nuclear power stations Design details Design ■ Pressure seal design ■ Non-rotating stem ■ Split wedge ■ Yoke head suitable for...

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Gate Valves Gate Valves to DIN/EN in Pressure Seal Design Product benefits ■ Additional features ensure safe sealing to atmosphere: - Pressure seal bonnet. Low risk of leakage, particularly at high pressures and temperatures. - Graphite gland packing with packing end rings. ■ Reliable, tight shut-off and service-friendly design - Wedge holder with flexibly mounted split wedge. Precise alignment of wedge discs with body; wedge discs are easy to replace. - Actuating moments are absorbed by the wedge holder guided in the body. No additional loads on the wedge discs and the seat/disc interface....

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Gate Valves Gate Valves to DIN/EN in Pressure Seal Design Pressure/temperature ratings Flanged (AKG-A) or machined butt weld ends (AKGS-A) Permissible operating pressures [bar]1* (to EN 1092-1)2* 1) The valves are suitable for temperatures down to -10 °C. 2) Operating pressures in accordance with DIN 2401 are also permissible.

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Gate Valves Gate Valves to DIN/EN in Pressure Seal Design 4) Recommended spare parts

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Gate Valves Gate Valves to DIN/EN in Pressure Seal Design Variants Limit switch(es) Body pressure relief valve . Also refer to type series booklet 7300.1. A body pressure relief valve is necessary if, with the gate valve closed, there is a danger of the liquid trapped inside the valve body heating up and causing an unacceptable pressure increase inside the valve. A warning sign is affixed to the yoke arm near the name plate.

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Gate Valves Gate Valves to DIN/EN in Pressure Seal Design All gate valves with pressure seal bonnet are factory-supplied with a closed connection branch 131.2 with connection dimensions Ø 22 / Ø 14.1 (suitable for pipe Ø 21.3 x 3.6). 131.2 5 Fig. 4: Closed connection branch for body pressure relief valve ④ When connecting to pipe 710, cut here and bevel the face to obtain a welding groove. Connection branch When ordering please state whether a pressure relief valve is to be provided, or whether excess pressure is to be released via a bypass and/or a relief hole in the inlet-side seat ring...

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Gate Valves Gate Valves to DIN/EN in Pressure Seal Design Dimensions and weights Dimensions and weights of AKG-A Nominal size / seat diameter Model with reduced bore on request Open Vertical clearance for removal Contrary to EN 558-1/26

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Gate Valves Gate Valves to DIN/EN in Pressure Seal Design Mating dimensions as per standard Face-to-face lengths: PN 63 and PN 100 to EN 558-1/26 PN 160 see table Flanges: Mating dimensions to EN 1092-1 Flange facing: Type B Other flange designs ■ For example, undrilled with groove (type D) or recess (type F) to EN 1092-1 at both ends ■ Flanges to DIN ■ Other flange designs on request

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Gate Valves Gate Valves to DIN/EN in Pressure Seal Design Dimensions and weights of AKGS-A Fig. 6: AKGS-A Dimensions and weights PN Butt weld ends, unmachined Butt weld ends, machined Pipe dimensions

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Gate Valves Gate Valves to DIN/EN in Pressure Seal Design Mating dimensions as per standard Face-to-face lengths: See table Butt weld ends: See table Weld groove form: DIN EN ISO 9692-1 (1.3 + 1.5) Different designs of butt weld ends and weld groove forms are possible, but only within the dimensions Amax. and Bmin.. Butt weld ends to EN 12627 are possible. Installation instructions The gate valves are designed for a max. differential pressure equal to the permissible operating pressure. If a bypass is necessary or requested for other reasons, a NORI 320 ZXSV globe valve as per type series...

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