Double Block And Bleed Ball Valve

DBB ball valve

Double Block and Bleed valves assure double isolation function thanks to two obturator inserted in a single body and they provide the bleed function by means of a bleed/vent system located btween obturators(body port and ball,gate or needle valve),from the floating ball valve design,TANA DBB valves with several different constructions.Double fixed balls hinge on supports,and floating metal or soft seats,central needle vent valve

Size Range : 1/2"~2",large sizes on request

Pressure:ASME Class 150 ~ ASME Class 2500

Temperature Range:-46~450℃

Side Entry Forged Steel Valves

On request,Top-Entry design

Low pressure loss through the valve

Low actuation torque

"CE"marking in compliance with PED Directive 97/23/EC

Full bore or Reduce bore

Different kinds of ends connections(RF/RTJ)Flanges,Butt weld,Clamp Connection,Socket Welding.

Wide availability of materials sepending on the specifications(carbon steel,stainless steel or Duplex steel for service in corrosive environments,Chrome-Molybdenum alloy steel for high temperature service,etc.

Materials with anti-corrosion properties according to NACE MR 0175

On request,seat pocket area overlay,seal area overlay,or completed cladding on wetted surface(welded overlays in inconel 625,Stainless steel 316 etc.,or Electroless Nickel Plating)

Suitable for wrench or motorized actuation(hydraulic,pneumatic,gas-over-oil or electric actuator)

Wenzhou Topnotch Machine Co.,Ltd is a professional leader China Segment V Port Ball Valve,wafer type V port ball valve,Double acting V port ball valve,Electric V port segment ball valve,flanged V port ball valve,Segment ball valve manufacturer with high quality and low price.Welcome to contact us!