Buried all welding ball valve,Shaft extension device:Shaft extension devices may be provided for buried serviced ball valves.these include the extension of the valve stem,the sealant injectors and the discharge valve.as shown in the figure on the right,users shall specify the requirements and length to be extended(the length is generally the distance from the center of valve channel to the center of operating device).during the manufacturing of the fully welded pipeline ball valve,the transition pipe can be supplied by users or by our company according to user requirements.please indicate the transition pipe diameter and length A when placing orders.
Size:2"~48"(DN50~DN1200),Class:150~2500,Material:A105,304,316,Alloy steel Temperture ℃ 200~250,Applied standard:ANSI B16.34,ANSI B16.10,B16.25,Flange teyp:RF,RTJ,BW,Structure:three pieces,Operation:Manual(worm gear),Pneumatic,Electric,Suitable Medium:Oil,LNG.
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