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Underground full welded ball valve can be directly deep underground ,to avoid hidden danger exists because of setting up the underground valve control room.

Underground full welded ball valve specification
Pressure class: Class******0 ，PN *6~*0
Diameter range: DN*5 ~ DN**0 (1/2"~*0") 
temperature: **9℃~ **0℃
Connecting type: welded
applicable medium : gas( LNG/LPG )
Driving means: manual, electric, gear, etc.
Available Material：SS、CS, A**5，A**6，CF8，CF8M, LCB, LCC 
               ( Selected at clientsrequest ).
Full welded undergro
und ball valve features
1. Designed for use with gas(LNG/LPG) pipeline network application.
2. One-piece welded body & end-piece connection pipe. (Available end connection dimension to ASTM, KS/JIS, )
3. Maintenance-free, no adjustment or lubrication with low running cost.
4. Pre-loaded seat springs ensure leak-tight at low pressure and reduce valve operational torque.
5. Bubble tight excellent sealing with carbon-reinforced PTFE (Teflon) seats.
6. Double O-rings ensure the stem sealing and can be replaced.
7. Anti blow-out stem according to international standards.
8. Available anti-corrosion special coating.
9. Stem and End connection pipe extension is available according to customer design requirement.

Welcome you visit our web : gvballvalve.com to get more information , if you have any doubt you can feel free to contact us ,we will try our best to provide you with quality service.