Trunnion mounted forged steel ball valve Reduce bore - Trunnion mounted ball valve


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Trunnion mounted forged steel ball valve Reduce bore
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Trunnion mounted forged steel ball valve Reduce bore

  • Product description:

    Trunnion mounted ball valve end design flange(raised face) Body material:ASTM A350 LF3 Ball material:ASTM A182 F316 Seat:Soft/metal to metal seat Worm Gear/Pneumatic operated

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Trunnion mounted forged steel ball valve Reduce bore

1g Valve description

metal to metal seat ball valve manufacturer


Body: A105

Nominal Pressure


Nominal Diameter:


End Sealing:


Face To Face:

API 608

Working Temperature:


Test And Inspection:

API 598/ISO 5208

End Connection:



NACE 0175


ISO9001, ISO14001, ISO28001, TS, CE,TUV

PSWe also can make products according to customer's drawing.

2g valve details

Valve body Typecasting


Every valve in DBV with clear typecasting.Our big size ball

valves also can comply with the leakage class A.(Zero Leakage).

Flange face finish ASME B16.5

Flange face finish


The ASME B16.5 code requires that the

flange face(raised face and flat face) 

has a specific roughness to ensure that

 this surface be compatible with the gasket

and provide a high quality seal.

ISO 5211 Top flange

Top flange    

The Top flange design comply with ISO 5211,

The yoke is convenient for assembling worm 

gear, pneumatic, electric, hydraulic and 

pneumatic & hydraulic actuators.

Gear box operated ball valve


In common,There are usually have these operation

types:Lever/Worm Gear box/Pneumatic/Electric(Motor).

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 ball.

 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 


Painting comparision

Ball Valve Painting

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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