Butt Welding Trunnion mounted Ball Valve - Trunnion mounted ball valve


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Butt Welding Trunnion mounted Ball Valve
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Butt Welding Trunnion mounted Ball Valve

  • Product description:

    Trunnion mounted ball valve with BW connection Forging is the most common ways to create high-quality valves. Forged valves have a reputation for being strong,which make them are more suitable for high-pressure and high temperature in using service.

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Butt Welding Trunnion Ball Valve

1g Valve description



                                                  Body: A105

Nominal Pressure


Nominal Diameter:


End Sealing:


Face To Face:

As per client's requirement

Working Temperature:


Test And Inspection:


End Connection:

Butt Welding


NACE 0175


ISO9001, ISO14001, ISO28001, TS, CE,TUV

PSWe also can do according to customer's requirements.

2g valve details


Butt Welding   



Locking Device 




Grease Injection Design On Packing Gland

DBV trunnion ball valve (DN≥150,NPS6)adopts the design of grease injection.  It  is effectively avoiding the leakage caused by the stem "O"-rings are unexpectedly -damaged.


Grease Injection Design On Seat

DBV trunnion ball valve (DN≥150,NPS6)adopts the design of grease injection.  It  is effectively avoiding the leakage caused by the seat rings are unexpectedly damaged.


Blow-off Design

When the valve is closed, the pressure in the body cavity will beaccumulated and the pressure is removed by opening the blow-off valve. 


Drain Valve Design 

The seal of the trunnion ball valve is achieved by the floating seat.When

the waste of the inner cavity is removed through drain valve, the

pressure will exist between the inlet and outlet end of the compression

seat, and it is easier to achieve the sealing performance.

3g why dbv valve

  Outer Trunnion Ball  


        The trunnion ball is the standard deisign for ball valves, which

guarantees an easy assembling into valve, a wide surface for

washers (reducing friction and torque).The ball can only turn

around its own axe (trunnion axe) and sealing is guaranteed by

the axial movement of the seats for springs or inline pressure.The

trunnion design is suggested for medium and big dimensions and

enables to avoid high torque during opening or closing phase with

inline pressure. The critical issue for these products consists in the

poor material between the bore and the washer area it occurs an

easier deformation of the ball for high pressure and consequently leakage between seats and bal.

Inner Trunnion Ball


        This structure is suitable for small size valve or higher pressure

environment. With simple design and convenient maching, this

ball guarantees a stronger resistance of the ball than the outer,

and so less deformation in high pressure condition reducing the

risk of leakage between ball and seats. However, it's critical for

the valve assembling especially for big dimensions; limited space

for washers.

 Product Comparison  


Carbon Steel Ball ValveIndustrial Valve

 Nitriding Thicken Stem Design  

Ball Valve Stem

 Factory Direct Sales 


Quality, transportation, after-sales 

4g FQ

  Q1. Are you a factory or trading company?

  A: We are a factory specialized in manufacturing valves 20 years. We both have factory in Wenzhou and Shanghai.

  Q2. Can I have a sample order for valve?

  A: Yes, we welcome sample order to test and check quality.Mixed samples are acceptable. 

  Q3.Do you have any MOQ limit for valve order?

  A: Low MOQ, 1pc for sample checking is available

  Q4. How do you ship the goods?

  A: We usually ship by sea, by air, by courier, etc.

  Q5. How to check the process of the order?

  A: You can check your order on our website after we provide you account and password.

  Q6: Do you offer guarantee for the products?

  A: Yes, we offer 2 years warranty to our products and we could repair freely for lifelong time.

  Q7: Can you put our Logo on the valves?

  A:Yes, we can totally produce products according to your special request, even manufacture them base on your drawing.

  Q8: How can I check your factory situation while it's difficult for me to come to China?

  AWe have photos and videos on our website, youtube and facebook, It shows every step of our manufacturing.

5g Contact us
Butterfly Valve Contact

Company Profile:

DBV VALVE CO., LTD is manufacturer of valves.

more details>

Email: [email protected]  

Wenzhou Factory :No.96 Fanhua East Road,OuBei,WenZhou,Zhejiang,China,325102

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