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DBB Anti - Static MSSP Flanged Ball Valve / Trunnion Mounted Ball Valve

China TEKO Industry Co., Limited certification
China TEKO Industry Co., Limited certification
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DBB Anti - Static MSSP Flanged Ball Valve / Trunnion Mounted Ball Valve

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Large Image :  DBB Anti - Static MSSP Flanged Ball Valve / Trunnion Mounted Ball Valve

Product Details:
Place of Origin: Made in China
Brand Name: TEKO
Certification: CE/PED, API
Model Number: Q347F/Q347H
Payment & Shipping Terms:
Minimum Order Quantity: 1 piece
Price: By negotiation
Packaging Details: By export wooden cases
Delivery Time: 30 working days after deposit
Payment Terms: L/C, T/T, Western Union, MoneyGram
Supply Ability: 500 tons per year
Detailed Product Description
Port Size: 2"~36" Pressure Rating: 300LB~2500Lb
Operation: Manual, Pneumatic, Electric, Hydraulic Structure: 2PCS, 3PCS
Structuer: Double BLock & Bleed Applications: Petroleum & Gas
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flanged end ball valve


v port ball valve

High Pressure DBB Trunnion Ball Anti-static CE Flanged Ball Valve



With the need for verifiable and maintainable shut off in safety critical applications, double block and bleed valves have commonly been used for primary and secondary tight shut off, in an attempt to provide and ensure system integrity. Historically, system integrity would be achieved through the use of two individual isolation valves, a spool piece and a bleed valve that had the disadvantage of extensive cost and weight and also increased the risk of emissions due to multiple flanged faces. Consequently, integral DB&B valves are now widely used.


These valves have a single or side entry body design with dual Ball or Plug valves with a bleed valve installed between the two main line valves. These valves are available bi-directional in metal seated and soft seated style, in bubble tight shut off. Sometimes called twin valves, DB&B valves are available in Plug and Trunnion Ball type up to 600mm NB in ANSI 150 to 2500 class. These DB&B design valves replace existing traditional techniques employed by pipeline engineers to generate a double block and bleed configuration in the pipeline. There are several designs and configurations of Double Block & Bleed valves as follows


DBB Anti - Static MSSP Flanged Ball Valve / Trunnion Mounted Ball Valve 0



Conventional single ball trunnion mounted ball valves have two energised generally bi-directional seats. The body cavity can then be fitted with a drain valve at the body cavity drain point and this type of valve is then sold as a “Double Block and Bleed Valve” (DBB). Conventional single ball design still allows a closed valve to leak up or downstream should the body cavity over pressurise. However double piston effect (DPE) seats can be specified on single ball DB&B trunnion valves. This style of valve is classified under API6D as a ‘Double Isolation and Bleed valve’ (DIB). This design ensures that both seats are always sealing, even if one seat does fail, the other seat will continue to maintain a seal as the two way seats maintain a bi-directional seal. With DPE seats, a body cavity external pressure relief valve is fitted (which can be optionally by-passed back to the upstream flange of the valve or to flare). This is a cheaper option than twin ball DB&B valves whilst still providing a high level of integrity.



Full Bore Design

Bolt Bonnet Split Body

Three Piece Body

Trunnion Mounted Ball Valve

Blow out proof stem

Anti-static Spring

Fire Safe construction



Material:A105,LF2,F304,F316,F316L,F304L,Alloy steel



● Level

● Gearbox Operated

● Electric Actuators

● Pneumatic Actuators


Contact Details
TEKO Industry Co., Limited

Contact Person: sales

Tel: +8613660157288

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